The Epic C4 Corvette ZR-1 LT5 Engine of the 90's

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  • Опубліковано 29 жов 2024

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  • @howabouthetruth2157
    @howabouthetruth2157 Рік тому +13

    The legendary LT5 engine was designed and extensively tested & punished by Lotus. GM owned Lotus at the time. During research & development, Lotus ran these engines on the dyno's from peak torque to red line and back to peak torque, to go back to redline, repeated over and over and over again FOR 200 HOURS NON-STOP, AND THE LT5 LIVED & STILL RAN JUST FINE. And yes, the C4 ZR1 with this LT5 engine STILL holds the world records for 24 hr high speed endurance ( 175.7 mph average due to pit stops that had to be included ) and 5,000 mile high speed endurance ( 173+ mph average ). That's like TEN Daytona 500 races back to back to back non-stop, without any caution periods. The only stops were quick stops for fuel, tire changes and driver changes. Mercruiser ( Mercury Marine ) was chosen to mass produce the LT5 due to their extensive knowledge, experience, and success with complicated aluminum casting techniques and the fact that they were also capable of keeping the incredibly close tolerances that the LT5 was designed with. Mercury actually built an entirely new facility for the sole purpose of mass producing the LT5 engine for Chevy. Because of all of the above, I am convinced that the Chevy/Lotus/Mercury LT5 is the most durable V8 ever produced in history for running long and hard. I believe this is true due to the fact that NO other auto maker has broken those records that the LT5 equipped C4 ZR1 still holds to this very day.

    • @VetteSource
      @VetteSource  11 місяців тому +5

      Excellent write-up with some great information. I agree that this engine is probably one of the best "alternative" specialty engines from that era and the one that re-started the horsepower wars. Thanks for sharing👍.

    • @howabouthetruth2157
      @howabouthetruth2157 11 місяців тому +3

      Thank you for the kind words. Actually, the LT5 still stands up to the modern high performance normally aspirated engines, and will outperform most of them in power delivery. Sure, there are a few that can run quicker and faster, but when it comes to running flat-out for an extended period........no one can deny that the LT5 is STILL the King of the Hill.......because no one else has broken the 2 high speed endurance records that the LT5 still owns. No one else is even willing to try it, ( or they have tried in secret, and failed, because had they been successful, the whole world would know about it ) and that includes the engineers at Chevorlet. They stated that it's far more difficult than most people realize, and when you run an engine that hard for that long, things start to deteriorate. @@VetteSource

    • @julianneale6128
      @julianneale6128 5 місяців тому

      This is very interesting reading! Did the C4 ZR1 ever do the 24 Hours of Le Mans? I only ask, because it sounds like the perfect candidate for a class win...

    • @blackice7408
      @blackice7408 4 місяці тому

      Lexus 5 litre v8 in the ISF, lc500?

    • @howabouthetruth2157
      @howabouthetruth2157 4 місяці тому

      @@blackice7408 Has anyone used the Lexus 5 liter V8 ( or any other engine for that matter ) to break both of the 24 hr and 5,000 mile ( approximately 28 hrs ) high speed endurance records that are still held to this day by a FACTORY STOCK 1990 C4 ZR1 Corvette with it's bespoke LT5 engine developed entirely by Lotus? The answer is NO. And until someone does, there's no way to prove if any other engine can handle such high speed/high rpm punishment like the Lotus/Chevy LT5 has. Ford, Porsche, Audi, and even Mercedes have all tried to break these records, and all of them FAILED miserably. Hardly anyone has even dared to attempt breaking these records ( at least not publicly........if they've tried, they did it in secret, so no one would know they failed, and if they were successful, they would let the whole world know ) because running over 7,500 rpm's at 190 mph non-stop for 24 hrs and/or 5,000 miles ( 28 hrs ) utterly destroys engines. The ONLY modifications that were done to the LT5 engine in the 1990 C4 ZR1 Corvette used to shatter both of those records, was headers & open exhaust. NOTHING ELSE was changed on that engine for breaking those records. They even used the factory suspension with the killer adjustable Bilstein shocks. Per SCCA rules, they had to use race-approved wheels & tires, and install a full roll cage inside the car of course. It's one thing to have an engine as an every day driver that can easily surpass 500,000 miles.......and Toyota certainly has a few engines that do this ( the legendary 2.7 liter 3RZ engine in my 2000 Tacoma 4x4 is one of those engines ) .........but running ANY engine at such crazy high rpm's & speeds is a whole different story. When asked if they would like to try to break their own records, even the Chevy engineers decline, because they know just how difficult it is to do. For at least 60 years, Lotus has been engineering & developing race winning engines that at one time or another, have won every road course event. That's a hell of an accomplishment. Lotus has also CO-developed race-winning engines for other auto makers over the years. The legendary all-aluminum double overhead cam LT5 engine was installed ONLY in the C4 ZR1 Corvette. When Chevy replaced the C4 with the C5 Corvette, they stopped using the uber-expensive Lotus LT5 engine and replaced it with the LS1. Hell, to this very day, the C4 ZR1 with it's LT5 engine can still out-run nearly all new normally aspirated V8's found in modern super cars........and definitely OUT-LAST them if ran wide-open for long periods of time.

  • @IncomeWithEnergy
    @IncomeWithEnergy 2 роки тому +9

    Great video. Just bought my '91 1-owner ZR-1 a month ago and am truly enjoying its provenance, uniqueness and collectibility... it's been a hit at the local shows.

    • @VetteSource
      @VetteSource  2 роки тому +1

      Thanks, glad you enjoyed it. They do tend to create a stir once the hood is raised. The younger crowd isn't very familiar with them.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      @@VetteSource 20 yrs ago Id have 50 yr old guys take a peek under the hood look at the fender and say "oh its those slow tpi pos".
      Ok buddy.

  • @vettematt
    @vettematt 7 місяців тому +5

    I had a 1991 ZR-1. The LT-5 loves to breathe. With just intake porting, exhaust and a tune, these engines will make 500 crank hp. Mine surprised alot of modern musclecars.

    • @VetteSource
      @VetteSource  7 місяців тому +3

      It is amusing to have somebody roll up on an "old" C4 and see the utter look of surprise on their face when you embarrass them in front of their friends😁.

  • @trip5003
    @trip5003 2 роки тому +5

    great job explaining the LT5 . I own a 1995 . Removed the Plenum a few times now . Easy by the third time lol . Replaced Starter , 16 new injectors , new FPR now called an Improved Fuel Pressure Regulator or IFPR , new Plugs , new fuel pumps , there are 2 fuel pumps on this car , new fuel filter , new Ignition coils , 5-8 coil had failed so changed all of them .

    • @VetteSource
      @VetteSource  2 роки тому +1

      Thanks Trip, glad you enjoyed it. Some of the normal maintenance for an LT5 engine seems extreme compared to other engines, but oh boy how fun they are to drive👍. I've always loved the last year 95's with the 405HP engine. Great performers with the updated interior design.
      Do you happen to have one of the Competition Yellow Z's?

    • @trip5003
      @trip5003 2 роки тому +3

      @@VetteSource mine is Polo Green with black dash and beige interior .
      The Ronald McDonald ZR-1 is a Competition Yellow with a red interior lol . But it was the McDonald car so it had to have those colors . No idea where that car is now .
      I also have the Marc Haibeck Chip in my car so it adds another 10 HP so mine it is 415 hp .

    • @VetteSource
      @VetteSource  2 роки тому +2

      Yep, I saw the Ronald McDonald Z and the one off Admiral Blue with Red interior Z. I believe they were both 94 models. The Polo Green is a really nice color as well.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      @@trip5003 Why guys drool over that Im clueless. Oh...rare.
      Fn redicluous looking I Think.
      Remember the dealer by my house had a white top red gut GS for a yr couldnt give it away all the staff called it a clown car. Now the vette guys drool over it cause rare, lol

  • @spenceair1972
    @spenceair1972 3 роки тому +22

    It’s was designed by lotus but built by Mercury marine I think.

  • @dukeman7595
    @dukeman7595 2 роки тому +5

    I thoroughly enjoyed your tutorial of this engine, you are extremely attentive to accuracy and detail. Thank you.

    • @VetteSource
      @VetteSource  2 роки тому +1

      Thanks Dalton, glad you enjoyed it. I appreciate the positive feedback👍

    • @DJones476
      @DJones476 2 роки тому +1

      @Dalton: Even by today's standards, the performance still stands up. You won't have to worry about being overtaken by an EV driven by some dipshit with a man bun! 😜

  • @emilianocruz11
    @emilianocruz11 Рік тому +5

    One of the Best Corvette engines of all the Time

    • @VetteSource
      @VetteSource  Рік тому +2

      I do like this one quite a but, very exotic and what a sound when it's running through the higher RPM ranges.

  • @supremevettes1443
    @supremevettes1443 3 роки тому +8

    Awesome channel love all the c4 corvette content 💯

    • @VetteSource
      @VetteSource  3 роки тому +2

      Thanks for the feedback, glad you're enjoying it👍.

  • @24theMoney
    @24theMoney 2 роки тому +7

    Lotus really knows how to design an engine.

    • @VetteSource
      @VetteSource  2 роки тому +1

      Yea, it is one unique piece of machinery👍.

  • @shorts116
    @shorts116 11 місяців тому +3

    Just bought an Ultima Sport that has an LT5 in it,, think it's a 96 motor and is brand new, only done a few miles ie under 25 miles. Car has a long history and was even lost for 7 years. Watching vids to find out about the motor as not many in the UK! Thanks very interesting video.

    • @VetteSource
      @VetteSource  11 місяців тому +2

      Thanks, glad you enjoyed it👍. That seems like a pretty interesting car you've discovered with what is probably an interesting history.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      90-95 only. COuld have been an over the counter piece

  • @phyllisdorsey1880
    @phyllisdorsey1880 3 роки тому +8

    There is a Pcv system on my 1991 ZR - 1 . Actually, there are 2 pcv valves

    • @VetteSource
      @VetteSource  3 роки тому +3

      That is correct, I misspoke. Forgot about the two valves installed underneath the plenum.
      I may be misremembering since i haven't torn one down in many years, but I seem to recall something about the oil ventilation system being rather inadequate with the DOHC which necessitated the cylinder case box setup to recurculate oil fumes back into the plenum.
      Thanks for keeping me straight👍.

  • @WarriorsPhoto
    @WarriorsPhoto 2 роки тому +6

    Good video and thank you for sharing so much about the LT5. I will always remember the day I saw a V8 with DOHC under the hood of Corvette. I have respected GM ever since then. (:

    • @VetteSource
      @VetteSource  2 роки тому +2

      Yep, I remember the excitement when I first heard I was going to be produced. For a teenager of the 80's it was one of the most incredible things to see.

    • @WarriorsPhoto
      @WarriorsPhoto 2 роки тому +1

      @@VetteSource DOHC isn’t new but it was a first for the Corvette. I hope this new DOHC, flat plane crank, V8 sticks around as well. (:

  • @jeffflanagan2814
    @jeffflanagan2814 6 місяців тому +2

    Great video, thank you!

    • @VetteSource
      @VetteSource  6 місяців тому

      Thanks, glad you enjoyed it👍.

  • @cheezyrider1111
    @cheezyrider1111 3 роки тому +10

    My mans got 2 lt5’s? Jeez bro. Last one I saw was selling for like 15k. Love the lt5 but it makes my lt1 look very simple lol

    • @VetteSource
      @VetteSource  3 роки тому +2

      Simple isn't always that bad, my friend. I'll take the LT1 or LT4 any day when it comes to changing the oil or any of the engine driven accessories. Of course driving the LT5 makes up for it😁.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      Had 2 when I owned mine. Kinda had to just in case.
      Had almost 0 miles it only sold for a couple grand on ebay. Days of getting 15k are long gone unless maybe its stil in a crate

  • @bonosimic532
    @bonosimic532 2 роки тому +1

    magnificent ! the C4 Zr1 is a very historic and significant super sportscar, restore and bring it back to full glory asap pls!

    • @VetteSource
      @VetteSource  2 роки тому

      For sure, luckily it looks a little rougher than it actually is. It's suffered more from being disassembled for several years. I'm hoping to start getting it back together shortly.

  • @Z06-viper
    @Z06-viper 3 роки тому +3

    Thank you for the info!!!!

  • @WydGlydJim
    @WydGlydJim Рік тому +3

    One thing you might find interesting, is that on your second engine, the little girl that installed the secondary vacuum actuators, bless her heart had no real mechanical ability of understanding, and she installed them 180 degrees out. This caused the arm from the actuator to have an angled configuration over to the linkage. It was designed to be installed so the arm was parallel to the linkage. This never caused an issue, and was not caught on many many LT-5s. The diaphragms never failed although I would never change one to the correct orientation, as it has been “ran in” in the wrong configuration.
    😋

    • @VetteSource
      @VetteSource  Рік тому +2

      Now that's an interesting bit of trivia. Where can I find out more about it?

    • @gordocarbo
      @gordocarbo 2 місяці тому

      @@VetteSource FSM, Have it all on a CD.

  • @bobbycarbajal4460
    @bobbycarbajal4460 2 роки тому +1

    Loved this video!!! Your a library of knowledge on this engine! Thanks!!!!

    • @VetteSource
      @VetteSource  2 роки тому

      Thanks Bobby, appreciate the positive feedback👍.

  • @emilianocruz11
    @emilianocruz11 Рік тому +2

    One of the Best Corvette engines ever made beacuse its still my favorite Corvette engines ever made AND remember that.years lingefelter Made a monsters zr1 engines in 1993 to 1995 and made a unique zr1 in 1995 called the lingefelter zr1 twin turbo Lt5 with 800hp

    • @VetteSource
      @VetteSource  11 місяців тому +1

      Yep, I remember those well. Lingenfelter and Calloway produced some really awesome Corvettes during the late 80's and 90's

  • @howabouthetruth2157
    @howabouthetruth2157 Рік тому +2

    This was very interesting. Thank you!!!

  • @Tate_Cunningham
    @Tate_Cunningham 2 роки тому +1

    Wasn’t expecting that much information. Wish I could like the vid twice

    • @VetteSource
      @VetteSource  2 роки тому

      Thanks Tate, glad to hear you enjoyed it👍.

  • @jasonbear1336
    @jasonbear1336 3 місяці тому +1

    I had a 1986 and 1988 Corvette with L98 engine. I loved the torque on those cars, but would have love a ZR-1!

    • @VetteSource
      @VetteSource  3 місяці тому +1

      For sure, the TPI provides a unique stop light to stop light experience, but the LT5 in the ZR-1 is a completely different animal👍

    • @gordocarbo
      @gordocarbo 2 місяці тому

      Had both for dailies....long term, cost/ease of ownership keep driving the TPI cars.

  • @DelEast740
    @DelEast740 Рік тому +2

    This engine really reminds me of a V8 version of the GM Quad 4 H.O. I had a 90 grand am le with a quad 4 h.o. thing screamed for a n/a 4 banger.

    • @VetteSource
      @VetteSource  Рік тому +1

      Yea, the Qauad 4 seem liked it was the half LT5 engine. Definitely a potent little 4 banger, but not without its share of issues.

  • @davedavis775
    @davedavis775 2 роки тому +4

    The record was broken in the 2000's by a Volkswagon that was pretty much a race car . Not a street car with a production engine. They did change the 3.45 gears in the ZR1 to a 3.07 unit to help keep the engines revs down. They were running at 75 % throttle . The drivers got in and put the pedal to the floor . Still it was one hecht of a record . They also ran a L98 Corvette producing around 350 horsepower along with the ZR1 . Both cars set records. There is a video about the record run and it also can be found here on UA-cam.
    The LT5 responds well to modifications like long tube headers and a free flowing exhaust system. The 90-92 system steals some power . They fixed this on the later cars . They also used the better mufflers on the 96 LT1 and LT4 Corvettes. You can bring the 375 h.p. 90-92 LT5 up over 400 h.p. with long tube headers and better exhaust system than the factory one.
    If you do full engine porting of the plenum , injector housings , and cylinder heads you can be over 500 h.p. . Porting is done per the engines displacement. The next upgrade would be to go with larger pistons and cylinder liners . A popular upgrade is the 368 displacement . Next is to stroke the LT5 but this gets expensive . The big motor use to be a 415 making over 600 h.p.. Now some are well over that like 441 cubic inches. Lingenfelter with Lotus' Graham Behan was adding twin turbos for whatever power you wanted 700+ or even beyond 800 , 900, even over 1000 .
    Check out the ZR1 specialist , Marc Haibeck has been doing these cars for many years now. Another LT5 builder is Corey Henderson . Also check out the ZR1 net registry website.
    Marc did my 91 . It's a stock 350 cubic inch LT5 making 528 h.p. at the crank. This included full engine porting for a 350 , larger throttle body, bigger injectors, long tube headers, Corsa 2.5 exhaust, fidanza lightweight flywheel , Marc's custom chip for the combo, short throw shifter, and one of his secondary deletes . It runs on all 16 injectors all the time. The fuel economy isn't hurt much at all by this mod . Currently it still has the stock 3.45 gears but I have a 4.10 Dana 44 center section to go in. You can run any gear you like 3.70 , 3.90, 4.10 , or even 4.30 . The 4.10's make the tall 6th gear more usable on the highway . With stock 3.45 gears you would only use 3 gears at the drag strip. 4.10's you would be shifting into 4th just about the time you reach the trap. The 4.10's give you more torque in all gears . You need good sticky tires like a drag radial though.

    • @VetteSource
      @VetteSource  2 роки тому +2

      Dave, thanks for the thorough writeup. Lots of good information you shared there. Just out of curiosity, is anyone still making headers for the LT5? I know the aftermarket likes to move on from what they believe is old tech, but it would be cool to still be able to source some aftermarket exhaust goodies for them.

    • @Airwolf1971
      @Airwolf1971 2 роки тому +2

      @@VetteSource Last I checked Stainless Works was still making a complete exhaust system for C4 Zr1s.

    • @VetteSource
      @VetteSource  2 роки тому +1

      Excellent!. I'll have to look into their systems to see what's available when I begin the reassembly on this one. Thanks for the lead👍

    • @IncomeWithEnergy
      @IncomeWithEnergy 2 роки тому +2

      @@VetteSource OBX has headers and Maximizer maybe for less than Stainless Works just not to sure on fitment and quality.

    • @VetteSource
      @VetteSource  2 роки тому +1

      Cool, I'll check them out and see what they have to offer.

  • @emilianocruz11
    @emilianocruz11 Рік тому +3

    Dear Brian i hope one video of how to dissamble a lt5 dohc 32 valvs from a c4 zr1 please

    • @VetteSource
      @VetteSource  Рік тому +2

      I'll see what I can come up with👍.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      That will probably never happen. Complex engine and some original gaskets are about impossible to get

  • @holeshot1721
    @holeshot1721 7 місяців тому +1

    A guy in my town had one and he said he went to 5 shops to get a clutch done and nobody wanted to touch it! So of course we took the job on seeing that we could barely keep the lights on. To be frank we were scared going in it sat for a 2 weeks before we even attempted. Bro we banged that clutch job out in prbly 3.5 hours with 2 guys. Def a before lunch or after lunch job. Wasnt that bad after we finished. We looked at each other like did that just happen. Yeah what a cool car that nobody knows about.

    • @VetteSource
      @VetteSource  7 місяців тому

      Awesome story, man. Thanks for sharing👍.

  • @Mr.Vazquez
    @Mr.Vazquez 3 роки тому +5

    You have c4s for days love it!! Finally got a home and two car garage where my 91 currently seats awaiting fine touches engine and trans out re wire etc. Do you sell c4 parts?

    • @VetteSource
      @VetteSource  3 роки тому +4

      I do sell them as a matter of fact. My contact information is ony "About Me" page, and through my social media links.

  • @aaronlevine9623
    @aaronlevine9623 2 роки тому +1

    @VetteSource, there most certainly is a PCV system on the LT5. In fact there are 2 PCV valves. You're looking right at them at 6:40 in this vid. Not in the typical valve cover location, but they are there.

    • @VetteSource
      @VetteSource  2 роки тому

      Hey Aaron, that is correct. I addressed it in one of the earlier comments you may have not seen. Thanks for clarifying for everyone👍

  • @neal6473
    @neal6473 Рік тому +2

    I think Tim Allen, the actor, put an LT5 on his 1996 Chevrolet Impala ss car.

    • @VetteSource
      @VetteSource  Рік тому +1

      He sure did. I was just telling my kids about that car the other day. Wonder if he still has it?

    • @neal6473
      @neal6473 Рік тому +1

      @@VetteSource Yea, Tim Allen still has the car, and it was on one of the Jay Leno classic cars show channel on UA-cam.

    • @VetteSource
      @VetteSource  Рік тому

      That's 😎. I figured he would keep it long-term👍.

  • @kenqv3481
    @kenqv3481 Рік тому +2

    You had a Lot of the details wrong.. it does have PCV and the secondary valving is actually INSIDE the heads- but still a cool video

  • @TheMrmmkkpro
    @TheMrmmkkpro 2 роки тому +3

    #2822 sitting in my garage.
    Still holds the 24 hour world top speed endurance record
    5000 km top speed record
    5000 mile top speed record.
    Still "King of the Hill"
    And yes it still holds the records for a domestic production vehicle.
    Great video.👍👍🏁🏁

    • @VetteSource
      @VetteSource  2 роки тому

      Hey Michael, good to see you got the old boy up and running. Enjoy the rest of your weekend👍.

    • @bobolulu7615
      @bobolulu7615 10 місяців тому

      #1781 sitting in mine!

  • @geneyus6411
    @geneyus6411 Рік тому +1

    Awesome video, seeing this Unique Unicorn 🦄

    • @VetteSource
      @VetteSource  Рік тому +2

      Yep, very cool engine

    • @geneyus6411
      @geneyus6411 Рік тому +1

      @@VetteSource I hope you keep the best one for yourself!👍

    • @VetteSource
      @VetteSource  Рік тому +2

      For sure, I have one hiding around here that I haven't highlighted yet.

  • @robertmcwhinney4596
    @robertmcwhinney4596 11 місяців тому +1

    Mopar's and other's was called 3 duce's set up or 6 pack! Your right they looked awesome!😉👍

    • @VetteSource
      @VetteSource  11 місяців тому

      That's it👍. Love the look of the triple dueces.

    • @taproom113
      @taproom113 5 місяців тому

      Had a 1970 T/A Challenger, Plum Crazy on Black with the 340 "SIX PAK". Awesome car ... wish I'd Never sold it! Still have my Black on Red 1991 ZR-1 ... it's Not for sale ;-) ^v^

  • @DeFreshS10
    @DeFreshS10 2 роки тому +1

    great video

    • @VetteSource
      @VetteSource  2 роки тому

      Thanks, glad you enjoyed it👍

  • @darrylrichardson1997
    @darrylrichardson1997 Рік тому +1

    These engines are expensive and I was trying to figure out why but kinda make sense theses seem underrated engine

    • @VetteSource
      @VetteSource  Рік тому +2

      Hey Me, I'm assuming you're too young to remember when the C4 ZR-1's came out. At the time, they were one of the most badass cutting edge pieces of technology that was available and were in high demand, just like the current C8 Z06. They were referred to as the "Corvette From Hell" on one magazine cover. Very few cars could hold a candle to them, and even today, a ZR-1 will leave a look of utter astonishment on the face of many racers as they get walked on by one of these.
      The problem lies in the inevitable passage of time. As the generations mature, what was new becomes old and forgotten with the exception of the most fervent diehards. Then, all of a sudden, something will jog the collective memory of the group, and they are popular again. With the ZR-1, even though they have somewhat faded into obscurity, they maintain a relatively high value because the people that know understand what a monster of a car it is.

    • @darrylrichardson1997
      @darrylrichardson1997 Рік тому +1

      @@VetteSource lol 😂 yeah I’m only 26 I was born in 97

    • @VetteSource
      @VetteSource  Рік тому

      That's ok, at least I know the younger generation still knows a good piece of machinary when they see one😁.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      @@VetteSource When my nephew was 10 he knew right away what my Z was when I pulled up. It was on his video games

  • @toddandersen5742
    @toddandersen5742 2 місяці тому +1

    Also teamed up with Mercury marine because of their experience with aluminum engines....🇺🇲

  • @vkhken1966
    @vkhken1966 2 роки тому +1

    I read till 1993 all major repairs to the LT5 were done by Mercury marine. Engines were removed and shipped to Mercury. Even gave the option for a new engine instead of repair. After 1993 GM took control of repairs.

    • @VetteSource
      @VetteSource  2 роки тому +1

      I think I remember seeing that in the book that came about detailing the LT5 engine. If I'm remembering correctly, GM didn't feel that the dealer technicians had the advanced training or special tools needed to properly reassemble the major subassemblies like you mentioned.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      @@VetteSource THey were a pain in the azz to work on unless they were out, too.

  • @asken021
    @asken021 Рік тому +1

    Great video, congratulations, but could you tell me where the engine identification number is? I have one here in my workshop in Brazil and I needed to find this number so we can get the car's documentation

    • @VetteSource
      @VetteSource  Рік тому

      Hi Asken, glad you enjoyed it. The VIN number for the LT5 engine is stamped into the passenger side rear of the engine block. You will need to get underneath the car to see it. An inspection mirror/flashlight helps. It is located on the vertical face of the block directly adjacent to the transmission dowl pin in front of the bellhousing.

  • @JJ-gz9ts
    @JJ-gz9ts Рік тому +1

    すごく良い動画です🎉
    日本で1994年のc4 zr-1に乗っています。😊

    • @VetteSource
      @VetteSource  Рік тому +1

      素晴らしい、楽しんでいただけてよかったです!
      あそこのZR-1はあまり一般的ではないでしょう。
      あなたのZR-1は何色ですか?

    • @JJ-gz9ts
      @JJ-gz9ts Рік тому

      シカゴで作られた。
      BLACKです!
      とても良い車です♬

  • @beaches2mountains230
    @beaches2mountains230 11 місяців тому +1

    MAIN REASON THIS OG DOHC CORVETTE DIDNT SELL GOOD WAS BECAUSE OF THE 100K PRICE TAG AS WELL AS THE FACT THAT DESPITE THE UPGRADED SUSPENSION AND WIDER STANCE, IT DIDNT LOOK ANY DIFFERENT THAN A REGULAR OL CORVETTE. IM SURE WE COULD EASILY TELL THE DIFFERENCE BUT IT WAS EXTREMELY SUBTLE TO NOTICE THE DIFFERENCE IN WIDTH.

    • @VetteSource
      @VetteSource  11 місяців тому

      Yep, there was definitely some.of that price gouging going in back then just like there is today. Personally, I prefer the 90 Z's over the 91-95's due to there being more obvious differences in the body styles.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      True that was what made them cool they were unsuspecting to most guys
      Mine was 58k new.

  • @stevemoyers5693
    @stevemoyers5693 3 роки тому +3

    I had a 94 Z and you can remove the alternator without removing the plenum. Not a lot of fun though.

    • @VetteSource
      @VetteSource  3 роки тому

      Hey Steve, thanks for the information👍. Like you said it looks possible, but a tight fit to get it away from the plenum/throttle body/extension housing. That's one item I've ever had to remove from a running Z car over the years. Just shows how reliable the alternators have become over time.

    • @stevemoyers5693
      @stevemoyers5693 3 роки тому +1

      @@VetteSource i hear you….I had to do the job twice as the first rebuild of the alt they installed a bad bearing. Didn’t know it untill i fired it up! There was a learning curve so the second time was a bit easier but still….

  • @makosharkcnc7730
    @makosharkcnc7730 3 роки тому +4

    i like the engine/ but i think i would not want it cause there weren't that many made, i will stick with my LT1 i would mind a LS too

    • @VetteSource
      @VetteSource  3 роки тому +1

      Yea, that has become the problem as they've aged. If you can wrench on your own cars, it's not that bad, but God help you if your depending on a general mechanic shop to repair and source parts for the LT5

    • @gordocarbo
      @gordocarbo 2 місяці тому

      @@VetteSource if you need parts the go to place is the zr1net registry. Good group o guys there .Otherwise bend over! lol
      One reason I decided to sell mine .Loved it but having to hoard parts extra engine "in case" soured me. DIdnt need them but still..

  • @gregs_garage
    @gregs_garage 3 роки тому +1

    um... is that really how the secondary intake works? like the tiny hole in the throttle body is the only opening in the "normal" key setting? and the big plates don't open until "Full" key? Something seems off about that.

    • @VetteSource
      @VetteSource  3 роки тому +2

      yep, as odd as it sounds, that was the primary source for air flow. I remember the first time I saw it I couldn't wrap my head around it because I was used to the throttle blades of the L98.
      Here's a general operation description -
      A large, forward mounted air cleaner would feed a cast-aluminum throttle-body assembly with three throttle blades - a primary blade of 0.87-inch diameter and two larger, secondary blades measuring 2.32 inches across.
      The injection system of the LT5 actually operated in three, progressive stages. In the “first stage” mode, air would be drawn into the throttle body and past the primary throttle blade to the plenum, from which it was distributed to the eight primary ports. During this stage, the secondary throttle blades remained closed below 80 degrees (approximately) of the primary blade opening, which equated about 70 miles per hour on the road. During the “second stage” mode, the secondary throttle blades would open to add air to the eight secondary runners and ports, providing that the ECM was satisfied that full power would be required. In that event, the ECM would trigger the vacuum actuator to open the secondary runner throttles. The third “mode” of the LT5 engine was commonly referred to as the “Valet Mode”. Because the engine management system operated in stages that were mechanically controlled, the second stage performance could literally be locked out with a key. The actuator could be manually disabled via a mechanism in the center console, engaging the “valet” mode, which inhibited full-power operation when handling the car over to parking-lot attendants or other vehicle operators who might otherwise not be trusted with the car.

    • @anondale5635
      @anondale5635 3 роки тому +5

      @@VetteSource thats not technically correct. the small tb mid bottom opens first and the larger ones open soon after irregardless of the power key. power key activates the vacuum actuated secondary throttle plates under the inj housings.

    • @VetteSource
      @VetteSource  3 роки тому +2

      Ok, that makes sense. I was aware of the progressive opening of the larger throttle blades under increased speed/acceleration, kind of like the vacuum pods on the #1 and #3 carburetors on a TriPower, but wasn't familiar at what speed/throttle position they began to come into play. Thanks for clarifying👍.

    • @tjmoneybags
      @tjmoneybags 8 місяців тому

      @@anondale5635 I had a 91 Zr1 and I agree. I thot it was the secondary throttle blades in the 8 of 16 intake tunnels that resulted in the added power. If it could make 210 hp on that tiny primary hole of air then they proved restrictor plates are unnecessary! haha

  • @Gotmath8
    @Gotmath8 2 роки тому +1

    Lots of amazing cars there. Do you resto them? Part them? Or are they all to keep as projects? Wish we were neighbors. :)

    • @VetteSource
      @VetteSource  2 роки тому +2

      Actually a little bit of everything. My primary business is parting out the ones that can't be saved, light resto for the ones that can see the road again, and future projects for the ones I hope to get to some day😁.

  • @flagcityparts
    @flagcityparts 2 роки тому +1

    I recently found a 92 z-51 in a barn that hasn't ran in 7 years. I bought it because it was cheap 2k$ but didn't know it was a z51 car until i ran the vin at the dealership. the hood also didn't open. should I sell the motor and ls3 swap it or just sell the whole car as a project?

    • @VetteSource
      @VetteSource  2 роки тому

      Hey Flagcity. Is it a Z51 or ZR-1? Lots of difference as one is a suspension package and the other a completely different Corvette with a unique VIN number and 1 of only 502 produced in 1992. With that being said, it would be a mistake to break apart a ZR-1 for an LS swap. Just let me know what your working with and I can give you some further ideas.

    • @flagcityparts
      @flagcityparts 2 роки тому +1

      @@VetteSource today I received a message back from a local corvette restoration company and there interested in buying the car off of me, there offered me 9600 for the car. I'm waiting for proteam corvette to make a offer on the car so i can see who's fare. I do alot of ls swaps so moving it to someone who will restore it. it is better than having it sitting a year waiting on parts

    • @VetteSource
      @VetteSource  2 роки тому

      Yep, that's the best option. Definitely a car you want to keep together for somebody to put it back on the road in its original condition. What color was it by the way?

    • @flagcityparts
      @flagcityparts 2 роки тому +1

      @@VetteSource red ext. red int. black strip down the middle of the car

    • @VetteSource
      @VetteSource  2 роки тому

      Yep, red on red is a cool combination. Good luck with the sale, and let me know how it goes. I may have people down here that would be interested in it if you don't find a buyer in your area.

  • @iturbo5733
    @iturbo5733 Рік тому +1

    Was that a 3400 DOHC engine behind the LT5? I'd love to see a similar video on that too!

    • @VetteSource
      @VetteSource  Рік тому +1

      Good eye, man. In the year since I posted this video your the first person that recognized the 3400 DOHC. It is waiting it's tuen to be installed in a 1994 Olds Cutlass Convertible that I've had on the back burner for awhile. I'll have some videos highlighting it this coming year.

  • @georgesantiago6005
    @georgesantiago6005 2 роки тому +1

    You can delete those valve, refreshing the engine. Nice engine looks like the TPI engine.

    • @VetteSource
      @VetteSource  2 роки тому

      Hey George, I agree. It always looked like a TPI on steroids to me. Plus that crazy DOHC makes it sound very distinctive in comparison to the SBC engines.

  • @desireehill8779
    @desireehill8779 2 роки тому +1

    My husband is in need of a part for his Vette, how can he reach you?

    • @VetteSource
      @VetteSource  2 роки тому

      Desiree, he can reach me through DM @VetteSource on FB or IG and also find my direct contact information.

  • @nuke_ratt
    @nuke_ratt 2 роки тому +1

    Can you point me to any additional detail on the secondary throttle system and on an EGR delete?

    • @VetteSource
      @VetteSource  2 роки тому

      Murray, I am planning a follow up video for the LT5 shortly. Were you looking for a video that takes a deeper dive into the secondary throttle system and EGR system?

    • @nuke_ratt
      @nuke_ratt 2 роки тому +1

      @@VetteSource that would be very helpful. It’s the first time we have utilized this motor - tired of seeing LS swaps and wanted to do something unique with this motor. Lots to learn. Was looking into a possible EGR delete as well as trying to understand the throttle system as there are the two cables off the throttle body and I believe the secondary throttle system utilizes vacuum to open. Have the supplemental book specific to this motor on order. Thanks much for the help. Great video - I’ve watched multiple times.

    • @VetteSource
      @VetteSource  2 роки тому +1

      Great, glad it has been helpful. You're on the right track ordering the FSM for the LT5. Be on the lookout for that video soon👍.

  • @topjimmy2929
    @topjimmy2929 Місяць тому +1

    I got a 90 ita a neat old car .

    • @VetteSource
      @VetteSource  16 днів тому

      90's are cool. First year of the new interior and last year of the squared of bumper fascias...

  • @nicklouallen4784
    @nicklouallen4784 2 роки тому +1

    Do the engines make a different sound when secondary key is turned on?

    • @VetteSource
      @VetteSource  2 роки тому +1

      That's a good question. I've never noticed a difference in the timber or exhaust note between the two settings. Most of the distinctive sound of the LT5 comes from the overhead cams when pushing it into the higher RPM ranges.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      Youll definitely hear it

  • @yeanlingsoda359vortexcars8
    @yeanlingsoda359vortexcars8 2 роки тому +2

    Could you put this engine in a older 1981 camaro? Im interested for my car

    • @VetteSource
      @VetteSource  2 роки тому +1

      It's definitely a swap that can be accomplished, but a little more complex due to the custom wiring harness and specialized engine fitting that will be required. If you do a Google search, you'll be able to find some cars that have an LT5 swap to give you some ideas.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      Sure can. Wont be cheap youll need the electronics, have to figure your fuel system (used 2 pumps). Doable but not a weekend swap
      BEtter get one complete as possible cause little parts will cost a fn fortune

  • @gotuzzo71
    @gotuzzo71 2 роки тому +1

    Do you have an lt5 available for sale?

    • @VetteSource
      @VetteSource  2 роки тому

      Hey Gus, this was the last spare LT5 I had and sold it a few months back. I have one more, but it's still installed in my 90 Z. Are you looking for one to put in a hot rod?

    • @gotuzzo71
      @gotuzzo71 2 роки тому +1

      @@VetteSource yes, building a custom truck on a C5 chassis. I thought a 32v would be cooler than an LS

    • @VetteSource
      @VetteSource  2 роки тому

      Yep, that would be a unique build. I'll check my contacts and see if anyone has an LT5 they would be willing to sell.

  • @robertnelson5204
    @robertnelson5204 Рік тому +1

    Mercury made these man.

    • @VetteSource
      @VetteSource  Рік тому

      Yep, designed by Lotus/GM and cast and assembled by Mercury Marine in Stillwater, Oklahoma.

  • @mcmc1863
    @mcmc1863 Рік тому +1

    Uk vette fan here, im lookin at a '90 with 187 miles...yes, 187 miles....up for 60k sterling, are there probs with the '90?
    Great vid 👍

    • @VetteSource
      @VetteSource  Рік тому

      Thanks MC, appreciate the feedback. No problems with the 90s other than the normal maintenance issues that will arise with the high-tech features from the early computer cars from non-use. I would perform a very through inspection of the car you are considering to see which if any of these items are inoperable, and price your offer accordingly from there. Sounds like a phenomenal car👍.

    • @mcmc1863
      @mcmc1863 Рік тому +1

      @@VetteSource guessing none use isnt to good on the LT-5?

    • @VetteSource
      @VetteSource  Рік тому

      That's with any car, but as long as it's been properly stored it can be brought back out of hibernation.

    • @TechScottBrown
      @TechScottBrown Рік тому

      The Multec injectors were infamous for electrically shorting. Upgrading the 16 injectors to a Bosch design will bring true proper engine operation. Here’s a link to a video I shot many years ago walking through diagnosing a shorted injectors on the “secondary” side: ua-cam.com/video/RkKfoA7LSR8/v-deo.html

    • @gordocarbo
      @gordocarbo 2 місяці тому

      90 Z or an L98?

  • @bobolulu7615
    @bobolulu7615 10 місяців тому

    Youre not quite right about the throttle body. The one you showed at the front of the engine is just a standard throttle body. One of each of the intake valves for each cylinder had its own vacuum operated thottle butterfly and it would open when the ecu requirements were met. That small vacuum pump operates 2 actuators that are under the intake manifold. 4 of the intake butterflies are connected together on eac side with a vacuum servo to pull them open. Each intake valve has its own fuel injector. Also under the intake manifold is the ignition coils and coil amplifier and right down the bottom in the V is the Denso starter motor. I have one of these and havevhadvthe intake off maby times sorting vacuum leaks and a buggered starter.

    • @VetteSource
      @VetteSource  10 місяців тому

      Thanks for the detailed description. I'm aware of the secondary throttle system and how it operates, but didn't want to get that in depth for this video.
      I will have another video out later showing the system in greater detail once I fire up another long-term stored 1990 ZR-1 I have laying around here somehwere😁.

  • @rugbyguitargod
    @rugbyguitargod 2 роки тому +1

    15:11 I cringed when that aluminum fuel rail (w/injectors still in) fell on the concrete floor. Not exactly cheap parts to either replace or repair either, i'm assuming? :|

    • @VetteSource
      @VetteSource  2 роки тому +1

      Yea, that one got away from me. Food thing is they are much more sturdy than they look, but like you said LT5 parts VERY difficult to find. Thanks for watching👍.

    • @rugbyguitargod
      @rugbyguitargod 2 роки тому +1

      @@VetteSource good thing they overspec'd EVERYTHING on these engines, right? lol

    • @VetteSource
      @VetteSource  2 роки тому

      That's for sure.

  • @scruffy7443
    @scruffy7443 2 роки тому +1

    I would replace my lt1 in my trans am for this LT5 engine

    • @VetteSource
      @VetteSource  2 роки тому

      Now that would be an awesome upgrade. I'll bet somebody has tried it somewhere, but it would definitely take some custom modification.

    • @scruffy7443
      @scruffy7443 2 роки тому

      @@VetteSource This was where GM failed the f-body owners like me, if they would have ported this LT-5 motor to the 93-97 f-bodies instead of using the mechanics nightmare the LT1 with having to replace the opti-spark when failed and change of the hard to get to spark plugs from time to time it would have been reliable imo, if you look at how the LT5 spark plug and distributor are placed on this motor, it's not a money pit like the old LT1 seriously, let me tell you, when i first bought my 95 trans am, i did not do any research, first time i wanted to change my spark plugs, i literally cried under the cars, well my eyes watered like WTF! i pay $300+ to $500+ for a mechanic to change what i mentioned, I live in Cali, and also those LT1s hardly pass smog here with the dreaded DMV emission dyno test just to let you know.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      @@scruffy7443 Believe me the LT1 is the engine you wanna have in that car Dont even know if it would fit under the cowl .If it did good luck servicing it. BUild your lt1 plenty of good parts to make it fast

  • @lasvegaslife5770
    @lasvegaslife5770 2 роки тому +2

    Can u break down the l98 vs lt1 c4 power (all stock)???? Lt1 has 50 more hp !! Thats alot!!! But 0 to 60 times are basically the same??? So from dead stop to top end at what point and at what MPH does the lt1 50 extra horse power kick in and pass the l98??? This is all me and my c4 friends talk about!!!! End that battle cause no body is gonna race past 60 round here !!!

    • @VetteSource
      @VetteSource  2 роки тому +2

      That's an excellent idea👍. Having both a TPI and LT1 here, I'll see if I can put together something that can address those questions for you guys.

    • @lasvegaslife5770
      @lasvegaslife5770 2 роки тому

      @@VetteSource awesome!!!!! Looking forward to it!!

    • @herkloader34
      @herkloader34 11 місяців тому +1

      The L98 has more low end torque than the LT1, but past 60, the LT1 runs away from the L98 with that 50 extra horsepower.

    • @lasvegaslife5770
      @lasvegaslife5770 11 місяців тому

      @@herkloader34 L98 had 350 tourqe the lt1 had 340.. so those 2 cars 0-60 should be about the same .. after that lt1 pulls ahead due to its 50 extra hp. Even the ls1 c5 0-60 is about the same 0-60.. and after that the ls1 pulls ahead due to its extra horse power. I'm trying to get people to realize 0-60 times are not that different for example. 5.7 vs let's say 4.8 0-60.. in real life they gonna be close 0-60

    • @gordocarbo
      @gordocarbo 2 місяці тому

      Thats due to the short tunner intake of the LT1 it pulls more rpm where the L98 maxes out thats all.

  • @BB-019
    @BB-019 3 роки тому +5

    LT5s have Forged Aluminum Cylinder liners- Nicosil Coated, not Steel,, they have Hydraulic lifters, (lt6 is a solid lifter engine), and the only secondary butterflies are in the other 8 of 16 plenum tubes, not the dual throttle body's, (those are coupled together).
    Keep up the videos, but please try to give correct info.
    Aren't these LT5 engines BITCHEN!!!!!
    WAY AHEAD OF THEIR TIME!!!

    • @VetteSource
      @VetteSource  3 роки тому +3

      Yep, I seem to remember the cylinder liners being aluminum now that you mention it, but its been so many years I forgot that detail.
      I don't believe I indicated that the LT5 had solid lifters, or that the secondary throttle butterflies weren't in the plenum tubes.
      My videos are usually done in a stream of consciousness, so it's possible I misspoke without realizing it. I'm not a spring chicken anymore and the older I get I realize there's way too many details to remember regarding the different generations of Corvettes.😂.
      I do however, recall pointing out the plenum secondary butterflies in the last half of the video. Maybe you missed that section.
      Thanks for your recommendations, I'll take them into consideration in the future. Appreciate you watching and commenting👍
      And I agree, the LT5 is still in my mind one of the most wicked Corvette engines out there.

    • @dukeman7595
      @dukeman7595 2 роки тому +3

      @@VetteSource You did 'not' indicate that the LT5 had solid lifters or the the other issue he complained about.

    • @VetteSource
      @VetteSource  2 роки тому +2

      Yea, that was kind of puzzling to me that he heard it that way.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      @@VetteSource Everyone wants to be a corvette car expert online. lol

  • @ronstowe8898
    @ronstowe8898 2 роки тому +1

    Mercury marine group actually built the engine for Chevrolet.

    • @VetteSource
      @VetteSource  2 роки тому

      That's correct, thanks for sharing the info👍

  • @Jmonster68
    @Jmonster68 3 роки тому +2

    I want it

    • @VetteSource
      @VetteSource  3 роки тому +1

      Come on, I got a good price for ya😁

  • @garymathews4042
    @garymathews4042 2 роки тому +1

    the newer vette engines have direct injection ,which helps with power

    • @VetteSource
      @VetteSource  2 роки тому

      Hey Gary, good point. I forgot to mention that when I made the video. Thanks for the comment👍.

  • @skip741x3
    @skip741x3 2 роки тому +1

    Dohc yes, but it was a crossplane... the old dohc sounds nothing like the newest z06 flatplane one for that reason.....very cool engine though! I'd love to own one of those zr1's!

    • @VetteSource
      @VetteSource  2 роки тому +1

      Crossplane, thank you. That was the terminology I was looking for when making the video and couldn't remember it to save my life while shooting. The C4 ZR-1 is definitely a car to experience firsthand, it will make a convert out of you.

  • @rslyrick5315
    @rslyrick5315 2 роки тому +1

    Hey VetteSource, love your videos !
    One question, is it worth investing in a C4 ZR-1 if some parts can't be found anymore for that LT5 ? Even if you invest in a very good one vette, well cared over the years, at some point, there might and will be a thing. I would be ok paying a decent amount of money for some parts because the car definitely deserves it but not being able to find them is just a show-stopper... :/ what's your opinion about it ? Is that a question that nobody want to hear or should i stop worring about such thing and go for it ? :)

    • @VetteSource
      @VetteSource  2 роки тому +1

      Thanks RS, glad you're enjoying them👍.
      That's a good question that gets asked fairly often. I tend to think that for the immediate term, even cars with more difficult to locate repair parts can be thoroughly enjoyed.
      In the event something unique to the car/drivetrain needs replaced, there are always going to be vendors like myself that trade and sell the unique items, such as the LT5 engine components and ZR-1 specific body parts.
      Personally, I dont think there's any reason to deny yourself the enjoyment of the car for something that's a possibility and not an inevitability. The trick is to perform your due diligence when making the investment to buy the best car, low or high mileage, you can. With regular exercise, maintenance, and care you'll have a ZR-1 that will last for many decades.
      Let me know if you need any further guidance.

    • @rslyrick5315
      @rslyrick5315 2 роки тому +1

      ​@@VetteSource Thank you for you answer! Do you mind if I contact you via your business e-mail for further questions, not strictly related to this video, but still about Vettes ?

    • @VetteSource
      @VetteSource  2 роки тому

      For sure. My information is on my YT "About Me" page, or you can send me a DM through FB or IG @VetteSource

    • @IncomeWithEnergy
      @IncomeWithEnergy 2 роки тому +1

      I just bought my ZR-1 and had the same concerns but I just dove heart first and figured it out as I went... turns out that after 30 years there is a genuinely committed and huge support, resources and cult following for the car that ANYTHING that could possibly be wrong with the car or engine hat already been figured out. This LT5 has truly become an adventure of discovery for me and enjoyable learning experience that I didn't expect. Additionally, it's still shares at least 80% of parts with the other base Corvettes so common C4 parts are readily available and those that aren't there usually a work around.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      No these arent investments especially a Z
      Sure they are rare and all but most younger guys have 0 interest in them, they find out parts are tough to come by and $$ and not just anyone can work on them.
      Crowd is aging out as it is.
      Only investment grade vettes imo are pre 71

  • @MexicanGhost2013
    @MexicanGhost2013 2 роки тому +1

    I thought the LT5 was made by Mercury Marine, not Lotus.

    • @VetteSource
      @VetteSource  2 роки тому +2

      Designed and tested by Lotus, manufactured by Mercury Marine for their expertise in dealing with complex sand castings of aluminum engines.

    • @MexicanGhost2013
      @MexicanGhost2013 2 роки тому +1

      @@VetteSource makes sense thanks for sharing the knowledge!

    • @VetteSource
      @VetteSource  2 роки тому +1

      Not a problem, glad to do it. Thanks for watching👍.

  • @mikewest9033
    @mikewest9033 2 роки тому +1

    Mopar called them 6 packs

    • @VetteSource
      @VetteSource  2 роки тому

      Yep, exactly. Six Pack on the Mopars, Tripower for GM, and I think Ford just referred to it as the 6V.

  • @randybills3848
    @randybills3848 3 роки тому +3

    those are very cool and what a tech leap for the age but man what a maintinance headache

    • @VetteSource
      @VetteSource  3 роки тому +1

      Hey Randy, I definitely agree. These are incredibly cool engines and so much fun to drive, but kind of like working with a 3000 piece jigsaw puzzle😁

    • @randybills3848
      @randybills3848 3 роки тому +3

      @@VetteSource yeah man but would still take it lol

    • @VetteSource
      @VetteSource  3 роки тому +2

      For sure, wouldn't kick it out of my bed😁

    • @dukeman7595
      @dukeman7595 2 роки тому

      @@VetteSource Even if it ate crackers! Awesome piece of engineering.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      Not really. EVerything is under the plenum no need to do anything else.
      Even water pumps arent bad

  • @jz28h
    @jz28h 23 дні тому +1

    Ummmmmm so I have a 67ss and I’m thinking about scooping one of these engines going 441 and throwing some turbos on it. I will be damned if I put an LS in that car. Plus this will turn heads and people will scratch heads with ignorance.

    • @VetteSource
      @VetteSource  23 дні тому

      Now, that would be a wild build. There are a few LT5's hiding out there, so what you have in mind is definitely doable. Good luck, and keep us posted👍

  • @km6832
    @km6832 10 місяців тому

    Push rod engines make more torque?

    • @VetteSource
      @VetteSource  10 місяців тому

      Do they?

    • @km6832
      @km6832 10 місяців тому

      @@VetteSource do they? Was a question

    • @VetteSource
      @VetteSource  9 місяців тому

      You mean you were asking me if push rod engines make more torque?

    • @km6832
      @km6832 9 місяців тому

      @@VetteSource yes. What makes you say that

    • @VetteSource
      @VetteSource  9 місяців тому

      I'm gonna have to go back and watch my own video to get the proper context of what I was actually saying😁.

  • @mikes.1882
    @mikes.1882 5 місяців тому +1

    Anybody put one of these in a gen 4 camaro?

    • @VetteSource
      @VetteSource  4 місяці тому

      The 4th generation F-Bodies have such a deep firewall, I'm not sure if this bad boy would fit in there, but that would be an interesting build for sure.

  • @The-carpenter-420
    @The-carpenter-420 Рік тому +1

    Seems like chevy threw away the ohc 32 valve with ford picking it up and ford throwing away the pushrod and picking up the ohv. The basic design of the ls is ford design. Oiling, cooling, firing order, basic geometry of it was ford.

    • @VetteSource
      @VetteSource  11 місяців тому

      Yea, they dropped it like a hot potatoes after the 90's were over and done. Funny that they have swung back around to this design in the new Z06 engine.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      LS was a clean sheet design has nothing in common with Ford. Esp the heads

  • @louiszuech5436
    @louiszuech5436 10 місяців тому +1

    Mercury marine in Stillwater Oklahoma. Overly complicated for soso power output.

    • @VetteSource
      @VetteSource  10 місяців тому

      Yep, that is correct. I'm not so sure I would agree on the so-so power output. Maybe you've never ridden in one😁.

    • @louiszuech5436
      @louiszuech5436 10 місяців тому

      @@VetteSource just compared to today's vettes.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      @@louiszuech5436 That makes 0 sense
      Like comparing something made in 2050 to a new one today.
      The 90s could rip off 12.90s with great mpg in the right conditions. Wasnt til the Z06 came out that time could be matched or beat

    • @louiszuech5436
      @louiszuech5436 2 місяці тому

      @@gordocarbo you make zero sense I love the old cars but 385 HP is average gm make a 3.6 high option single turbo that makes 455 HP 30 + mpg!

    • @gordocarbo
      @gordocarbo 2 місяці тому

      @@louiszuech5436 ANy car can make power with a turbo .did they have that in 90, no . Comparing anything newer than the car in the vid is what makes 0 sense .

  • @ztwntyn8
    @ztwntyn8 2 роки тому

    Make sure you read comments and don’t go with all of this info. Some is good though

    • @VetteSource
      @VetteSource  2 роки тому +1

      Wow, tough crowd on this video. After looking back at my FSM's and technical notes it's obvious I mixed up a few things most likely due to my advanced age and the useless Corvette trivia stuffed in my brain all these years😁.
      You guys have given me a good idea though. So we can clear the record and make sure no misinformation is getting put out there, I'll make another video describing the LT5 secondary throttle system in detail so I can correct the errors in this presentation.
      I'll do my best to make sure you don't have to shake your head from me making stuff up next time. Just remember if you're going to comment to keep the swearing out of it. This is a family friendly channel and I automatically delete comments with curse words👍.

    • @IncomeWithEnergy
      @IncomeWithEnergy 2 роки тому

      @@VetteSource the vette nerds really came out play on this one huh...

  • @brianbiro9094
    @brianbiro9094 4 місяці тому

    Thought it had 405hp 🤔👊👍✌️🦅🇺🇸🦼

    • @VetteSource
      @VetteSource  4 місяці тому

      That's correct.
      It was 405 HP in 1993-1995.
      1990-1992 was 375 HP👍

  • @hunnterful1
    @hunnterful1 7 місяців тому +1

    If you know you know

  • @damianbrennan2258
    @damianbrennan2258 2 роки тому

    What's the big deal FORD had the camer i

    • @VetteSource
      @VetteSource  2 роки тому +2

      I'm guessing you were born after the LT5 was produced😁.

    • @damianbrennan2258
      @damianbrennan2258 2 роки тому +1

      @@VetteSource No I'm older than u long live the 427 sohc as far as chefs go that's the best motor they made

    • @VetteSource
      @VetteSource  2 роки тому

      Ok, now I'm clicking. For some reason I thought you were referring to the modular engines from the late 90s/00s. Like you, the Big Blocks of the 60's are my favorites for power and pure sound. The best expression I ever heard about a solid lift cam/high compression big block was that each cylinder sounded like it was living it's best life while idling. Definitely something that can't be replicated with today's engines.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      HOw many yrs was the cammer in production? Longevity mpg?
      Those 2 arent even in the same solar system.

  • @howabouthetruth2157
    @howabouthetruth2157 Рік тому +1

    I believe peak torque for the LT5 is at 4800 rpm. But I'm told that the LT5 pulls like crazy throughout it's entire rpm range.

    • @VetteSource
      @VetteSource  Рік тому

      I think that is correct, but would have to go dig through my reference books.

    • @herkloader34
      @herkloader34 11 місяців тому

      My '91 Z pulls hard through 7,000 rpm and sounds amazing with the resonator and muffler delete with H-pipe exhaust.

    • @gordocarbo
      @gordocarbo 2 місяці тому

      @@herkloader34 They are gonna get thier best time by shifting waaay before that ..they are only making heat and noise at 7k got the time slips to prove it. SOmewhere!

    • @gordocarbo
      @gordocarbo 2 місяці тому

      They do...its seamless power not likea pushrod engine
      When you get the secondaries open you can feel it..kinda like hitting an old double pump carb. Cool analog feel to it.