try fitting tat turbo and intercooler under a cramped hood. the whipple fits on virtually anything. I'll pick the blower with its easy installation. no hot exhaust to plumb all over hells half acre.
I'd like to see what a SBC 383 and 400 would get with the Edelbrock Eforce 122 Supercharger, with various boost. Nobody's shown what the bigger cube old school small block SBC engines can do with a carby fed Eaton Rotor Supercharger.
There are losses with turbos. I don't know why everyone says there is no loss. You can't restrict the exhaust and expect no loss. Just look at the dyno graph. They both made the same power even though the blower made a little less boost. If there were no losses with the turbo, it should have made more power with less boost.
You can make a flat boost curve on the supercharger with a bypass valve or blow off valve. It would be even less efficient unfortunately as you will need to set the pressure release at the boost level attained at low rpm with the valve bleeding pressure almost all the time after that. An even smaller pulley would be needed.
Kinda unfair test yeah. That is exactly what the turbo was doing blowing off it's excess the WHOLE TIME. Then not same set up for supercharger, so it never had chance to make same torque.
Ohhh who makes that black elbow the TB is mounted to? My 109 Whipple TB doesn’t clear my IACV on the 2.9. Blower belt hits the TPS. Even with the smallest pulley from Wegner it’s closer than I’d like.
You should reach out to Smooth Boost, they control supercharger boost through the bypass valve. It’s a neat idea and would be a good fallow up of this video.
Great result. You could have really thrown things out of the ball park by letting the turbo boost higher down low and let it run out of puff and boost on its own.
Iwould like to hear how many miles the junk yard motors have on them.And l would like to see a supercharge base test going fromm 6psi in incraments of2lbs and up
I really like the channel. I’ve learned allot about back pressure from watching, and just boosting in general. I’ve got a stock 4.8. Unfortunately I’ve got to rebuild the top end. I would love to see a NA shootout on different Cam’s on this platform.
He's essentially comparing the boost levels, but it's apples to oranges. The blower boost # is at peak. Whereas in a turbo say it has a comparibe wastegatr spring as far as boost # the turbo motor will essentially have that boost level much faster and maintain at that boost level
1 GT-45 at 800HP is awesome. What about 2×GT-45 an easy 1,000HP with the proper cam? The bottom end seems stout, but a lower compression piston might stave detination.
I 100% get the idea of this comparison. But looking at your whipple boost curve I'm thinking belt slip. I struggled with belt slip forever with a 3.4 whipple 5.4 4v ford. The boost curve was always rising same as what I see in this test. Finally after switching to 10 rib pulleys 3.75 upper and a 9" lower I had the flatest boost curve yet. I had all the boosts by 3600 rpm 23.7 all the way to 7000.
@@richardholdener1727 Would it be different on an eng dyno? On the chassis dyno under accel the run was four seconds to 7000 rpm. I was having trouble with belt slip on the sudden accel. Video showed smoke coming off the upper pulley. Peak boost was the same between the pulley setups. But the 10 rib had way more boost in the curve.
Hello Richard!!! Halarious intro. Those two have boost rage combo issues. Ok I’ll mind my own business. LOL 😂!! That whipple charger is the way to go, I would prefer it to be intergraded with the engine and let the boost be determined by the driver needs. Like a switch to go to track or extreme street racing. Dynojet has that option. But best psi for the buck is the gt45 charger. Can’t beat it!! Thanks Richard!!
@@richardholdener1727 turbos usually have to spool up right? While if the supercharger is sized right it usually keeps boost threw the rpm range. While turbos get more boost the higher the rpm unless your doing compound turbos.
Boost won this competition. I'm curious, at ~800hp, how much more fuel was the whipple using? I think that would help illustrate how much less efficient the SC was. Also, why couldn't supercharger manufacturers put a CVT into the input shaft of the SC, so that it could more of less keep the drive speed flat, resulting in a fairly flat boost curve? Seems like a no brainer to me? Great test and thank you as usual for doing these tests!
i wondered about it too but i guess it's the responsiveness of the cvt that's not there yet. imagine being at iddle and the thing being in boost, read as "6th gear" on the supercharger and then you revv it in neutral and the thing blows itself apard because the cvt doesnt downshift in time.
It's been done, e.g. the DB600 series of German WW2 plane engines had a hydraulic CVT driving their centrifugal supercharger. In that case, the CVT was controlled based on altitude so the engine wouldn't overboost down low where the air is denser. Power was still regulated by the throttle. The Allies used a simpler system where there were two sets of supercharger drive gears, and a clutch to switch between them. While less complex, it had the downside of creating a range of altitudes where low gear couldn't provide full boost but high gear would overboost unless the engine was throttled back. The low gear also generally was too fast for sea level, so some throttling was needed at low altitude in low gear as well. Thankfully they had boost controlled throttle bodies to handle this so the pilot didn't have to watch the boost gauge all the time. I've often thought the latter system would be good for hotrods, you could have a mild low gear for less heat and fuel use during normal driving, and a wild high gear for smoking tyres. Ideally with a Mad Max style lever to switch between them.
It's been done, Procharger made the i1 a while back. Centrifugal superchargers are more efficient than whipple type. I guess it was too expensive for most people.
Twin-screw Supercharging an engine cost so much that I think many of us find turbo-charging is preferable. If the costs to fit all types of forced induction were equal, our discussions would be about how to apply each power adder to specific engine displacements and specific usage.
Outside of Top Fuel, you get a supercharger for the looks and sound these days. The performance gain is just a bonus. I don't know anyone who would build a motor for raw power with a blower, it will always be turbines. Be it exhaust run or belt driven. As for expense, if you buy 1 quality turbo its about the same. If you buy two its more expensive, but also twice as powerful again. $2500 for a blower is not that far off $1500-2000 for a quality turbo.
@@sylumgand What are you talking about? Legit turbo kits are not cheap and just as expensive as a Superchargers. You are talking $7,000-$10,000 for either kit. You don’t see big twin screws on street cars because the torque they create causes the tires to break loose. This is why you see more pro charged or turbo set ups with more aggressive street/track builds. Generally speaking Turbo’s are much easier on internal parts, transmissions, rear ends and advantages in tuning. New Whipple 3.8L is making 2500hp on Coyote and Hemi Applications with appropriate engine build to support. The old negative about superchargers 10-15yrs ago was they were extremely inefficient and didn’t make power like Turbos could. That’s now vastly changed with technology, and now you have guys running deep 8’s on truck and car applications with just mere supercharger at full factory car weight. ATI Racing was running 6.60’s with a Iron 388 and a old Gen 4.5 Whipple in a 3,000lb car. Now they moved to a Billet Block and new 3.8L with the intent to chase 5’s. That’s how far superchargers have come.
@@KTger If you are spending $7k+ on a turbo setup, you're paying for the names and labor to install it. And you cant even use the old saying "You pay for quality" because everything is shit anymore.
@@sylumgand I’m not even taking about expensive competition turbos. Top of the line stuff can run you $5,000+ similar to the 98mm Pro Mod Gen2 I once had from PTE. Raw materials alone isn’t as cheap as you’re making it, whether you put it together or someone else does ( time is money, no matter how you slice it ). You also need the machinery to begin with in order to even fabricate. 🤣🤣.
@@KTger You are talking about top of the line stuff. I have a big single(not 98mm but 76mm) rear mount. The turbo was $280, charge tubing was $150, BOV $50, fuel regulator $150, 2.5in exhaust tubing $125, didnt even bother with a wastegate so toss another $150 I have to spend, $150 for the hat to mount on my Sniper, $80 for oil lines because a hydraulic shop is nearby and its easier to have them make them for me. No where near $2000 and it runs and drives, not taking it past 8psi until I put it on a dyno and have someone who knows fueling handle it. I have more invested in the super sniper and hyperspark ignition system, than I do the turbo equipment. And I could have still done the rear mount without the fancy Holley shit.
So the turbo needed more boost to hit the same hp level? The whipple hit 800 hp at 9 psi... the turbo needed 9.7 psi to do the same thing. This tells me the turbo is maxed out, but the Whipple has a lot more to give. If you pushed the whipple to 15 psi, you'd be well over 1,000hp; but the turbo might not even hit 12-14 psi. What will happen is the Whipple's boost curve will start to flatten out as you near it's maximum flow. This happens with any PD blower. The closer you are to maxing it out, the more torque you'll make at lower rpm. I think the terminator Cobra guys were the first to figure it out when they started pushing the stock Eaton blowers to the max. Don't get me wrong - I think turbos ultimately make more power, but PD blowers, particularly when they're sized properly (or even slightly undersized) are absolutely unbeatable torque monsters. Of course, the tuning window also gets smaller, but hey - there's always a tradeoff. Which is why I've swapped my Whipple (9.80's at 140 on 93 octane pump at 3,500 lbs) for an electric turbo (actually Vortech) - the electric setup offers the fun of the Whipple, but the efficiency of the turbo (actually better - zero losses anywhere) - we're seeing 32 rwhp per psi, and we're only in the 440-500 rwhp range (so far). The Whipple was less than half that much hp gain per psi.
@@richardholdener1727 Makes sense. You don't know me, but I know you - very well. Jim Campisano offered me the tech editor job at MM&FF back in the '90s before Evan took the position. I stayed in TV. I've probably read every single dyno test article you've ever written since then. I even followed your high-speed mustang antics back in the day. I've been thinking out offering up my electric Vortech for you and Steve to put on an engine dyno; at this point it should be good for around 700hp and weighs about 50 lbs, battery pack included. I'm happy to fly out to the left coast on my own dime, but I'm not sure how the TSA would look upon 90 kW of lithium-ion batteries in a carry on. BTW - at this moment, not looking to market it; I'm just like you - I want to see what's possible. We've already put it on a chassis dyno, but that was shortly after my dad passed and it really wasn't ready - but with the wrong motor, impeller and battery pack, it still made good power: ua-cam.com/video/84wSLQRy9sc/v-deo.html ; now it's a lot more potent. If you're up for it, just let me know here, and we can figure out some way to get it over there (and maybe myself as well). Should be fun.
i feel like there is a little slight of hand going on here. With both the NA and Super charged set ups the dyno graph begins approximately at 2700RPM, when the Turbo enters the fight, suddenly the graph begins at 3500RPM. I know it's not much but i suspect there is some turbo lag there at the bottom of the graph which would benefit both the NA and super charged motors. If we are comparing things, the playing field needs to be flat. same motor and the graphing needs to have the same parameters. Maybe it all amounts to nothing, maybe it's all intended to drive the comments, maybe it's just an oversight but it's definitely off a little.
Good observation; that is the big performance disadvantage of turbos - turbo lag. Not much on a diesel because diesels are unthrottled, so the "pump" of the turbo doesn't slow way way down at idle the way it does on a gasoline engine. I say a supercharger is the way to go on a gasoline engine, except for aircraft, as a plane does not idle once in the air. The engine runs at a pretty constant speed.
@@jamesbosworth4191 Right. Now days most turbos have "anti lag" designs allowing it to spool up faster at non boost rpms. But with bigger turbos it's more difficult to get around as the turbo is big and therefore spools slowly
what was the apparent parasitic loss ? witch will have been the power difference at a given boost level? how much more boost did the Whipple need to match the turbo HP ?
I'm a turbo guy. However I've toyed with the thought of driving a blower with a CVT type drive unit-spin the blower quicker to get the desired boost and then adjust the blower speed via the CVT to maintain the boost level-min rising boost curve.
What a supercharger needs is a cvt style drive, spin it harder low down then bring it back when the boost requirements are made haha or a turbine bolted to the back.
Cvt belts are nonsense. They also have really high radial loads. the tension on the belt is one part of where in the shifting pattern it is. A serpentine belt is actually really good, they take up a minimal amount of room, the pullies are monolith and typically never fail and have no maintenance. Adding a Cvt might give you a little more torque but at huge complexity.
Cvt runs opposite of what you would want though. It starts with low gearing and runs to higher. You would want it to start high and then low to keep a flat boost pressure. It would be interesting setting up back shift and secondary ramps. Again though you would have to run inverted pulleys or something weird to get the desired effect.
How would this turbo setup compare to a centrifugal supercharger? Parasitic losses aside the efficiencies should be similar and the type of boost goes away.
@@richardholdener1727 Thanks, I understand that. This was just one of those random tangents. I was thinking that since they use a centrifugal impeller they have the potential to make much more boost than they typically do. As far as that goes they should be on par with a turbo. It is because of their direct connection to crank speed that they have a linear boost curve. If you were to spin it fast enough to make target boost early and bleed off the excess you could maintain these flat boost and power curves like a turbo. Maybe not at the same level, especially down low because of the excess parasitic loss but it should manage to be better than the Whipple and an overall simpler install than a typical turbo. Again, just random thoughts, not something I’d ever expect to see.
One of these days I would like to see a supercharger at least 12-71 or bigger on something, would really like to see a 16-71 but that would take a hell of a motor to withstand it
After watching every video in this library I've found a new reverence for boost! I have a 4.8 sitting under a tarp guess what it's getting boooooost!!!
Gonna have too go back to some of your 6.0 and 6.2 combos, 383- ls -N/a-heads-cam = 540hp 😮, maybe I'm mistake but I think a 6.0 with just a cam and 799 heads made 522hp or with 706 heads it made this power, but 383ci Ls with aftermarket heads only makes 540hp 😢 obviously it's not worth the cost or I'm mistaken what the 6.0 hp combos were said to be making.
I've never seen a boost curve like that on a Whipple. What's going on there? Looking closer, it's only two pounds difference but obviously the restriction builds on itself. Is that the cam not letting it breath.
I agree and I own both a Whipple and a gtx3076 cars. the Whipple had instant torque versus my turbo. Both on stock came. Also cams have a big part to play in these test.
I wish he would dyno from 2000 rpm for each run to actually show the true difference. eg a turbo that hasn’t spooled up yet vs a supercharger that’s always on.
@RICHARD HOLDENER You have to check out on3 107 mm billet wheel journal bearing gt55 with the proper engine combo it's good for 2500hp and it cost 1000$ . It's the cool new turbo. Put that on your big bang motor. I've seen dyno test of 300hp increase at the wheel vs s488 running same boost levels on compounds. That's sweet.
@@richardholdener1727 no that would be awesome but not realistic , it was on a diesel cummins. It would make 80 psi max with the s488 and 115psi with the on3 107mm gt55 . Also needed more fuel with that air flow . Just goes to show the cfm the larger turbo added that cfm can be seen as a restriction in boost.
That turbo 383...😍. Have you done any turbo blow thru carb 383 LS testing? That GT-45 seems like instant boost. Bet it would make one killer street combo! You know.... if you were the 800 hp daily kinda guy 🤣
@@hoonaticbloggs5402 call me an old school fan. I can tune a carb... fuel injection... takes more equipment than a few wrenches and screw driver 🤷🏼♂️ ( p.s. yes I know fuel injection slaughters carburetors on performance in almost every aspect... I just like an old 4 barrel 😏)
I'm absolutely convinced a CSU blow through on the LS 383 will totally decimate the fuel injected numbers. Evaporative cooling is superior although fuel economy would be down but if it's a weekend toy hell yes!
I have a factory TVS on my CTS-V. The advantage is you're able to really spin it at lower RPM but no parasitic loss. Then the valve closes and instant torque!
That was really great!!! I wonder how much more egt the turbo would make over time/ how practical that motor would be on a road course....? What a monster!!
Great comparison! Very interesting, how do you control your wastegate with the electronic controller, c02/ dome pressure? I’d like to see how you set it up.
What is the weight difference between the iron block and a Ls 3 Aluminum block and could the LS 3 GM crate motor 525 hp be used in this boost application?
I believe you are wrong about a turbo not costing engine HP. You have the significant exhaust backpressure that costs torque to compress the exhaust gasses to develop turbo boost.
the loss is minor compared to the losses associated with driving a supercharger-we know this because a turbo provides significantly more power than a blower at the same boost level.
OK, but there is a penalty associated with backpressure developed to drive the turbo charger. There are other issues involved but that factor has to be acknowledged.@@richardholdener1727
I’ve heard you say every cam is a turbo cam lots but I think this is 1st time I heard every cam is a supercharger cam. This is good cause I bought stage 1 SHM n/a cams 3yrs ago and now I have an m122 for it.
Everytime I hit Turbo Boost on my 1982 Black Trans AM the car jumps over other vehicles I don't know what's going on with it and the car talks. The car is kinda a smart ass.
@@DavidValdezBigWaveDave I think there were a couple test mules with carburated 3.8l turbo engines in 3rd gen cars. There was the 3.8l FI that I think was a 1989 turbo trans am. The knight industry car wasn't just any Trans Am, it was a Recaro Trans Am
I expected the turbo to win, but the boost curves are so different, it seems like cheating. The GT45 may be too small for this test. It's making 10 psi at low rpm, then boost falls off after 5700 rpm. The turbine must be going into choke. I have seen other Holdener turbo test video where the turbine is too big for the engine, and it provides a rising boost curve, which would make it more fair for the Whipple. On the other hand, the oversize turbo would have lower drive pressure at high rpm than the GT45 did, so it would make more peak power. I've been wanting to see a test between a Whipple and an Eaton TVS of comparable displacements on the same engine and at the same boost level. I bet the Eaton would win.
@@andyharman3022 Basically it's both. Rotor clearances (rotor to rotor and rotor to case) and rotor geometry are the largest factors. i.e. if you have larger clearances inside the SC, you leak more air, causing more heat and less pressure.
Richard, got a big Procharger laying around to put on a 4.8L? I've always wondered if you could get a flatter boost curve by using an oversized centrifugal supercharger and had a boost controller connected to the BOV to bleed excess boost at high RPMs. Even though it's oversized, theoretically because it's generating lower pressure, it'd wouldn't be a massive power hog vs using a smaller SC. But the bigger SC would be less efficient...hmm. It'd be a be a waste instead of using a turbo but It'd still be interesting. If anything it'd be good at blowing any leaves out from under your hood. :D
So many Die-hard blower fanbois can't comprehend the turbo making 5 more pounds of boost at 3500rpm banging on about the size and putting a CVT transmission on it this was a very decent blower totally humiliated by a 300$ wuhan war whisle if you want to put a CVT on the blower lets put a good VGT turbo in there and see how that plays out another sluaghter no doubt
@@hondaservicecenter I want to see what kind of results he gets and what downsides he sees to the setup. You basically spin the blower harder to get more low and midrange torque without getting too much boost on the top end.
Hey Mr. Boost:) I have a question you might be able to answer and talk about in a video. Why is it that the twin screw blowers like Whipple and Kenne Bell don't give the same snappy throttle response the classic Roots blowers have? While the screw blowers do compress the air in the rotor section, they are still predominantly positive displacement blowers just like the Roots blowers. What's your take on this?:)
@@richardholdener1727 I didn't mean as in not snappy at all. But with the stuff I've done, I've never seen them be as "explosive" in their throttle response as a classic Roots. Not sure how else to explain it.
The Whipple doesn't have the airflow at lower blower speeds to produce the same boost as the turbocharger. With a larger capacity supercharger you could indeed match the boost level of the turbo, and it would be a very interesting test to compare parasitic losses at the same boost pressure. Some will argue, "Well what about the rising boost curve that superchargers are known for? If we were able to achieve equal boost at lower rpm levels, we'd be overboosting at high rpm levels, and there's no way to control that." Well yes, but yes we can. It's just no-one does it. There are couple of ways we can control a rising boost curve. First, we can introduce a blowoff valve on the pressure side of the supercharger to bleed off excessive pressure at high rpm levels. The second way is more complex, and that involves varying the blower drive speed to speed the blower up at lower rpm levels, and slow it down at higher rpm levels. Would it be worth it? For testing purposes, yes. Everything in the name of science. For the average person? No, absolutely not. It's much easier and simpler to design a turbo system. Would it be cool? Certainly. Instant power with no lag at all? That is cool, and costs be damned.
A CVT to drive the blower would take up a lot of space, but it would be cool to see. Maybe someone could take a CVT out of a Nissan or high-performance snowmobile and cobble it up to drive a supercharger. But once you think about it, a turbocharger is a centrifugal compressor driven by a pneumatic CVT. Functionally, it allows the shaft speed of the supercharger to change at a variable ratio to the engine crankshaft speed. Mechanically driven superchargers are constrained to operating at a fixed ratio of crank speed. There have been multi-speed and CVT transmissions used to drive centrifugal compressors, most famously the WW2 Merlins with 2-stage, 2-speed superchargers. Some of them even had 3 speeds. An example of a CVT driving a supercharger was on the Napier Nomad aircraft diesel, that had a Beier stepless variable speed drive between the crankshaft and axial flow turbocharger. The complexity of the shaft system in that engine was mind-boggling.
@@andyharman3022 a snowmobile style cvt would be the simplest way to vary blower drive speed. The difference being that the drive pulley on a snowmobile is in the open position at idle and closed at high rpm, whereas you'd want the drive pulley closed at idle and open at high rpm.
I just wanna see the NA then the super then the turbo on the same engine…. Of course that takes time and work but it’s on a dyno so plenty of room to work.
a 383 required boring the block to 3.902 and adding a 4.0-inch stroker crank. The 383 stroker combination will include new crank, rods, pistons and rings and bearings.
Evidently you havent owned them. I have owned them all....and currently a twin turbo car and a Procharger car. Centri's definitely have many advantages . You don't race dyno numbers or boost curves....you race cars. But hey, dyno numbers impress people that don't know.
I have owned Vortech cars, nitrous cars and turbocharged. The turbocharged car was 6 tenths quicker in the 1/4 mile from the Vortech with ZERO other changes. I don’t solely race dyno’s either....but thanks
How about charts showing cfm per horsepower .And a chart showing throttle body area per horsepower. Maybe you could do that from previous tests. CAT want to know.
I've found it odd you gush over superchargers but consider combos mostly in terms of drag racing. Like most others, that supercharger would be crushed outside a small road course or limited traction.
“Watch me delete those comments” 😂😂😂😂
It's official, we need to buy Richard a 4l80e for his truck so he can finally boost it 🤣
Don't forget a 14 bolt rear
Nah. He needs a Rossler 400 with manual valve body:)
Go big or go home:D
@@AB-80X a 4l80e is essentially just a th400 with overdrive
6L90
@@shoes121255 its electronically controlled
If Richard isn't arguing with himself in every future video I am leaving. Lol
I learned I want to turbo charge everything I own including my lawnmower lol
I turboed my lawnmower, bx2370 best mod ever
Seconded
We need more Richard arguing with himself, LMFAO 🤣
Yeah that was great. 🤣
Yup awesome
Love these intros, and its spot on. Some people would argue with a stump.
LISA! You may want to water down those umbrella drinks for Richard.
Thank you Mr. Clean, I always enjoy! 😉
To me it sounds like you cant go wrong with either.
I prefer the compactness of a blower though
Great video as always, one of the best UA-cam channels hands down!
Love those arguments between those two brothers in the beginning. Can’t wait till they start throwing punches🤣🤣🤣
I will knock myself out!
try fitting tat turbo and intercooler under a cramped hood. the whipple fits on virtually anything. I'll pick the blower with its easy installation. no hot exhaust to plumb all over hells half acre.
I'd like to see what a SBC 383 and 400 would get with the Edelbrock Eforce 122 Supercharger, with various boost. Nobody's shown what the bigger cube old school small block SBC engines can do with a carby fed Eaton Rotor Supercharger.
Excellent comparison Richard, both good setups. For me the turbo is the way to go, the peak torque numbers & curve alone won me over.
Cheers😊
And then a 4.8 cam shootout will be exactly like an NA 5.3 or 6.0 shootout. They will just make slightly more power than the 4.8.
“I will knock you the heck out “ has to be the least intimidating threat I’ve ever heard haha.
For off road use I definitely prefer supercharged over turbo. Don't need to be nearly as precise with gear selection.
Learned that the GT45 is an absolute beast. Thank you for continuing to use it in your tests Richard.
The cx racing version is much bigger than the dna eBay gt45. It’s a 80/77.
Whipple would be nice on the road as a DD Cheers.
And even more fun on a track.
I like how he makes it easy to understand for a young mind like mine 💪
There are losses with turbos. I don't know why everyone says there is no loss. You can't restrict the exhaust and expect no loss. Just look at the dyno graph. They both made the same power even though the blower made a little less boost. If there were no losses with the turbo, it should have made more power with less boost.
Yup, turbos increase pumping losses. Superchargers don't.
one can compensate with less restrictive resonators/mufflers or even straight pipe. as for the results this is a cheap ebay turbo
When you were talking about the to motors you should have pulled them both up just to see the difference NA
LOL, your point-counterpoint at the beginning was great!
thnx
You can make a flat boost curve on the supercharger with a bypass valve or blow off valve. It would be even less efficient unfortunately as you will need to set the pressure release at the boost level attained at low rpm with the valve bleeding pressure almost all the time after that. An even smaller pulley would be needed.
Kinda unfair test yeah. That is exactly what the turbo was doing blowing off it's excess the WHOLE TIME. Then not same set up for supercharger, so it never had chance to make same torque.
Ohhh who makes that black elbow the TB is mounted to? My 109 Whipple TB doesn’t clear my IACV on the 2.9. Blower belt hits the TPS. Even with the smallest pulley from Wegner it’s closer than I’d like.
You should reach out to Smooth Boost, they control supercharger boost through the bypass valve. It’s a neat idea and would be a good fallow up of this video.
Before watching;
Going with 15-20% more power on the turbo at the same boost level.
Turbos are cool but that Whipple when you hit the throttle oh yeah
I used to not like turbos until I bought a F150 with the 3.5L Ecoboost and did a few modifications. Good God. I’m a convert.
Yeah because his video shows how the whipple has so much more low end torque and boost than a turbo.... WTF?
I have a PD Blower on my 6 liter ls. I like them
@@dazaspc
I've been in this game for a long, long time. What the hell is a PD blower?
@@AB-80X Police Department blower. Like on the Mad Max car.
So it looks like you were below the efficiency on the hit with the blower. It liked the additional spin with smaller pulley.
I liked the opening arguement lol. Great comment arguments
Great result. You could have really thrown things out of the ball park by letting the turbo boost higher down low and let it run out of puff and boost on its own.
Iwould like to hear how many miles the junk yard motors have on them.And l would like to see a supercharge base test going fromm 6psi in incraments of2lbs and up
I really like the channel. I’ve learned allot about back pressure from watching, and just boosting in general.
I’ve got a stock 4.8. Unfortunately I’ve got to rebuild the top end. I would love to see a NA shootout on different Cam’s on this platform.
He's essentially comparing the boost levels, but it's apples to oranges. The blower boost # is at peak. Whereas in a turbo say it has a comparibe wastegatr spring as far as boost # the turbo motor will essentially have that boost level much faster and maintain at that boost level
1 GT-45 at 800HP is awesome. What about 2×GT-45 an easy 1,000HP with the proper cam? The bottom end seems stout, but a lower compression piston might stave detination.
2 GT45S COULD DO 1500+ HP
I 100% get the idea of this comparison. But looking at your whipple boost curve I'm thinking belt slip. I struggled with belt slip forever with a 3.4 whipple 5.4 4v ford. The boost curve was always rising same as what I see in this test. Finally after switching to 10 rib pulleys 3.75 upper and a 9" lower I had the flatest boost curve yet. I had all the boosts by 3600 rpm 23.7 all the way to 7000.
a rising boost curve indicates a lack of belt slip
@@richardholdener1727 Would it be different on an eng dyno? On the chassis dyno under accel the run was four seconds to 7000 rpm. I was having trouble with belt slip on the sudden accel. Video showed smoke coming off the upper pulley. Peak boost was the same between the pulley setups. But the 10 rib had way more boost in the curve.
@@richardholdener1727 The blower you used is a positive displacement pump. Its boost curve should be linear.
Hello Richard!!! Halarious intro. Those two have boost rage combo issues. Ok I’ll mind my own business. LOL 😂!! That whipple charger is the way to go, I would prefer it to be intergraded with the engine and let the boost be determined by the driver needs. Like a switch to go to track or extreme street racing. Dynojet has that option. But best psi for the buck is the gt45 charger. Can’t beat it!!
Thanks Richard!!
I always understood if the Supercharger is working right the power curve difference is below 4000 and turbo is above 4000.
THAT IS NOT ACCURATE ON EVERY COMBINATION OF SUPERCHARGER (TYPES AND SIZES) A TURBOS (SIZES)
@@richardholdener1727 turbos usually have to spool up right? While if the supercharger is sized right it usually keeps boost threw the rpm range. While turbos get more boost the higher the rpm unless your doing compound turbos.
Boost won this competition. I'm curious, at ~800hp, how much more fuel was the whipple using? I think that would help illustrate how much less efficient the SC was. Also, why couldn't supercharger manufacturers put a CVT into the input shaft of the SC, so that it could more of less keep the drive speed flat, resulting in a fairly flat boost curve? Seems like a no brainer to me? Great test and thank you as usual for doing these tests!
i wondered about it too but i guess it's the responsiveness of the cvt that's not there yet. imagine being at iddle and the thing being in boost, read as "6th gear" on the supercharger and then you revv it in neutral and the thing blows itself apard because the cvt doesnt downshift in time.
It's been done, e.g. the DB600 series of German WW2 plane engines had a hydraulic CVT driving their centrifugal supercharger. In that case, the CVT was controlled based on altitude so the engine wouldn't overboost down low where the air is denser. Power was still regulated by the throttle.
The Allies used a simpler system where there were two sets of supercharger drive gears, and a clutch to switch between them. While less complex, it had the downside of creating a range of altitudes where low gear couldn't provide full boost but high gear would overboost unless the engine was throttled back. The low gear also generally was too fast for sea level, so some throttling was needed at low altitude in low gear as well. Thankfully they had boost controlled throttle bodies to handle this so the pilot didn't have to watch the boost gauge all the time.
I've often thought the latter system would be good for hotrods, you could have a mild low gear for less heat and fuel use during normal driving, and a wild high gear for smoking tyres. Ideally with a Mad Max style lever to switch between them.
It's been done, Procharger made the i1 a while back. Centrifugal superchargers are more efficient than whipple type. I guess it was too expensive for most people.
@@JosephVE3GKT Thank you, that is really awesome. Speed costs money, right? :)
Twin-screw Supercharging an engine cost so much that I think many of us find turbo-charging is preferable. If the costs to fit all types of forced induction were equal, our discussions would be about how to apply each power adder to specific engine displacements and specific usage.
Outside of Top Fuel, you get a supercharger for the looks and sound these days. The performance gain is just a bonus. I don't know anyone who would build a motor for raw power with a blower, it will always be turbines. Be it exhaust run or belt driven. As for expense, if you buy 1 quality turbo its about the same. If you buy two its more expensive, but also twice as powerful again. $2500 for a blower is not that far off $1500-2000 for a quality turbo.
@@sylumgand What are you talking about? Legit turbo kits are not cheap and just as expensive as a Superchargers. You are talking $7,000-$10,000 for either kit.
You don’t see big twin screws on street cars because the torque they create causes the tires to break loose. This is why you see more pro charged or turbo set ups with more aggressive street/track builds. Generally speaking Turbo’s are much easier on internal parts, transmissions, rear ends and advantages in tuning.
New Whipple 3.8L is making 2500hp on Coyote and Hemi Applications with appropriate engine build to support. The old negative about superchargers 10-15yrs ago was they were extremely inefficient and didn’t make power like Turbos could. That’s now vastly changed with technology, and now you have guys running deep 8’s on truck and car applications with just mere supercharger at full factory car weight.
ATI Racing was running 6.60’s with a Iron 388 and a old Gen 4.5 Whipple in a 3,000lb car. Now they moved to a Billet Block and new 3.8L with the intent to chase 5’s. That’s how far superchargers have come.
@@KTger If you are spending $7k+ on a turbo setup, you're paying for the names and labor to install it. And you cant even use the old saying "You pay for quality" because everything is shit anymore.
@@sylumgand I’m not even taking about expensive competition turbos. Top of the line stuff can run you $5,000+ similar to the 98mm Pro Mod Gen2 I once had from PTE. Raw materials alone isn’t as cheap as you’re making it, whether you put it together or someone else does ( time is money, no matter how you slice it ). You also need the machinery to begin with in order to even fabricate. 🤣🤣.
@@KTger You are talking about top of the line stuff. I have a big single(not 98mm but 76mm) rear mount. The turbo was $280, charge tubing was $150, BOV $50, fuel regulator $150, 2.5in exhaust tubing $125, didnt even bother with a wastegate so toss another $150 I have to spend, $150 for the hat to mount on my Sniper, $80 for oil lines because a hydraulic shop is nearby and its easier to have them make them for me. No where near $2000 and it runs and drives, not taking it past 8psi until I put it on a dyno and have someone who knows fueling handle it. I have more invested in the super sniper and hyperspark ignition system, than I do the turbo equipment. And I could have still done the rear mount without the fancy Holley shit.
Man I love your videos! Fun to watch but you learn so much from them. I like how you're very neutral about them too. Cheers from The Land Downunder. 🍻
Glad you like them!
So the turbo needed more boost to hit the same hp level? The whipple hit 800 hp at 9 psi... the turbo needed 9.7 psi to do the same thing. This tells me the turbo is maxed out, but the Whipple has a lot more to give. If you pushed the whipple to 15 psi, you'd be well over 1,000hp; but the turbo might not even hit 12-14 psi. What will happen is the Whipple's boost curve will start to flatten out as you near it's maximum flow. This happens with any PD blower. The closer you are to maxing it out, the more torque you'll make at lower rpm. I think the terminator Cobra guys were the first to figure it out when they started pushing the stock Eaton blowers to the max. Don't get me wrong - I think turbos ultimately make more power, but PD blowers, particularly when they're sized properly (or even slightly undersized) are absolutely unbeatable torque monsters. Of course, the tuning window also gets smaller, but hey - there's always a tradeoff. Which is why I've swapped my Whipple (9.80's at 140 on 93 octane pump at 3,500 lbs) for an electric turbo (actually Vortech) - the electric setup offers the fun of the Whipple, but the efficiency of the turbo (actually better - zero losses anywhere) - we're seeing 32 rwhp per psi, and we're only in the 440-500 rwhp range (so far). The Whipple was less than half that much hp gain per psi.
THE GT-45 IS ONLY AN 800-HP (MAX) TURBO
@@richardholdener1727 Makes sense. You don't know me, but I know you - very well. Jim Campisano offered me the tech editor job at MM&FF back in the '90s before Evan took the position. I stayed in TV. I've probably read every single dyno test article you've ever written since then. I even followed your high-speed mustang antics back in the day. I've been thinking out offering up my electric Vortech for you and Steve to put on an engine dyno; at this point it should be good for around 700hp and weighs about 50 lbs, battery pack included. I'm happy to fly out to the left coast on my own dime, but I'm not sure how the TSA would look upon 90 kW of lithium-ion batteries in a carry on. BTW - at this moment, not looking to market it; I'm just like you - I want to see what's possible. We've already put it on a chassis dyno, but that was shortly after my dad passed and it really wasn't ready - but with the wrong motor, impeller and battery pack, it still made good power: ua-cam.com/video/84wSLQRy9sc/v-deo.html ; now it's a lot more potent. If you're up for it, just let me know here, and we can figure out some way to get it over there (and maybe myself as well). Should be fun.
Thank you Richard your the man
Driving a turbo with exhaust also restricts your exhaust flow. Both take power to make power.
not if you swap the other restrictions to compensate
Bro, u shoulda used the same test motor, lol.. Im shocked how close those two motors were overall. Sweet test.
i feel like there is a little slight of hand going on here. With both the NA and Super charged set ups the dyno graph begins approximately at 2700RPM, when the Turbo enters the fight, suddenly the graph begins at 3500RPM. I know it's not much but i suspect there is some turbo lag there at the bottom of the graph which would benefit both the NA and super charged motors. If we are comparing things, the playing field needs to be flat. same motor and the graphing needs to have the same parameters. Maybe it all amounts to nothing, maybe it's all intended to drive the comments, maybe it's just an oversight but it's definitely off a little.
Good observation; that is the big performance disadvantage of turbos - turbo lag. Not much on a diesel because diesels are unthrottled, so the "pump" of the turbo doesn't slow way way down at idle the way it does on a gasoline engine. I say a supercharger is the way to go on a gasoline engine, except for aircraft, as a plane does not idle once in the air. The engine runs at a pretty constant speed.
@@jamesbosworth4191 Right. Now days most turbos have "anti lag" designs allowing it to spool up faster at non boost rpms. But with bigger turbos it's more difficult to get around as the turbo is big and therefore spools slowly
what was the apparent parasitic loss ? witch will have been the power difference at a given boost level? how much more boost did the Whipple need to match the turbo HP ?
I'm a turbo guy. However I've toyed with the thought of driving a blower with a CVT type drive unit-spin the blower quicker to get the desired boost and then adjust the blower speed via the CVT to maintain the boost level-min rising boost curve.
Use a bigger blower and put a throttle valve paralell to the supercharger to alter boost. My car has it stock.
Always bobbin like a walking chicken for the intro 😊
Thanks for sharing this one.
Love the banter richards
What a supercharger needs is a cvt style drive, spin it harder low down then bring it back when the boost requirements are made haha or a turbine bolted to the back.
Procharger i-1
Just run a TVS blower, damn near flat boost curve
Cvt belts are nonsense. They also have really high radial loads. the tension on the belt is one part of where in the shifting pattern it is. A serpentine belt is actually really good, they take up a minimal amount of room, the pullies are monolith and typically never fail and have no maintenance. Adding a Cvt might give you a little more torque but at huge complexity.
Cvt runs opposite of what you would want though. It starts with low gearing and runs to higher. You would want it to start high and then low to keep a flat boost pressure. It would be interesting setting up back shift and secondary ramps. Again though you would have to run inverted pulleys or something weird to get the desired effect.
@@scotttod6954 A CVT can start wherever you want. We don't need to debate this. The i-1 already exists.
How would this turbo setup compare to a centrifugal supercharger? Parasitic losses aside the efficiencies should be similar and the type of boost goes away.
CENTRIFUGAL HAS RISING BOOST CURVE AND MORE PARASITIC LOSS THAN TURBO
@@richardholdener1727 Thanks, I understand that. This was just one of those random tangents. I was thinking that since they use a centrifugal impeller they have the potential to make much more boost than they typically do. As far as that goes they should be on par with a turbo. It is because of their direct connection to crank speed that they have a linear boost curve. If you were to spin it fast enough to make target boost early and bleed off the excess you could maintain these flat boost and power curves like a turbo. Maybe not at the same level, especially down low because of the excess parasitic loss but it should manage to be better than the Whipple and an overall simpler install than a typical turbo. Again, just random thoughts, not something I’d ever expect to see.
One of these days I would like to see a supercharger at least 12-71 or bigger on something, would really like to see a 16-71 but that would take a hell of a motor to withstand it
What size Whipple and what size turbo is being used ?
Lockdown has been rough on Rich.
What are the specs on that turbo used?
Turbo almost always produces closer power to torque numbers given the proper setup. Supercharged the numbers are farther apart
After watching every video in this library I've found a new reverence for boost! I have a 4.8 sitting under a tarp guess what it's getting boooooost!!!
Gonna have too go back to some of your 6.0 and 6.2 combos, 383- ls -N/a-heads-cam = 540hp 😮, maybe I'm mistake but I think a 6.0 with just a cam and 799 heads made 522hp or with 706 heads it made this power, but 383ci Ls with aftermarket heads only makes 540hp 😢 obviously it's not worth the cost or I'm mistaken what the 6.0 hp combos were said to be making.
I've never seen a boost curve like that on a Whipple. What's going on there? Looking closer, it's only two pounds difference but obviously the restriction builds on itself. Is that the cam not letting it breath.
I agree and I own both a Whipple and a gtx3076 cars. the Whipple had instant torque versus my turbo. Both on stock came. Also cams have a big part to play in these test.
I wish he would dyno from 2000 rpm for each run to actually show the true difference. eg a turbo that hasn’t spooled up yet vs a supercharger that’s always on.
you drag race a lot from 2000 rpm?
It would be nice to know intake air temps on both combinations
Yep, good point.
@RICHARD HOLDENER You have to check out on3 107 mm billet wheel journal bearing gt55 with the proper engine combo it's good for 2500hp and it cost 1000$ . It's the cool new turbo. Put that on your big bang motor. I've seen dyno test of 300hp increase at the wheel vs s488 running same boost levels on compounds. That's sweet.
300 HP AT THE SAME BOOST LEVEL?
@@richardholdener1727 no that would be awesome but not realistic , it was on a diesel cummins. It would make 80 psi max with the s488 and 115psi with the on3 107mm gt55 . Also needed more fuel with that air flow . Just goes to show the cfm the larger turbo added that cfm can be seen as a restriction in boost.
That turbo 383...😍. Have you done any turbo blow thru carb 383 LS testing? That GT-45 seems like instant boost. Bet it would make one killer street combo! You know.... if you were the 800 hp daily kinda guy 🤣
Why would you want a carb on an LS ?
@@hoonaticbloggs5402 call me an old school fan. I can tune a carb... fuel injection... takes more equipment than a few wrenches and screw driver 🤷🏼♂️ ( p.s. yes I know fuel injection slaughters carburetors on performance in almost every aspect... I just like an old 4 barrel 😏)
I'm absolutely convinced a CSU blow through on the LS 383 will totally decimate the fuel injected numbers. Evaporative cooling is superior although fuel economy would be down but if it's a weekend toy hell yes!
Fuel Injection gets evaporative cooling too. It just happens inside the cylinder rather than the manifold, so it's.less obvious.
@@hoonaticbloggs5402 No damn computers and sensors to have to worry about.
Whipples are great. They are like a mix between a tvs and a centri blower. Tvs blowers really hit hard down low
I have a factory TVS on my CTS-V. The advantage is you're able to really spin it at lower RPM but no parasitic loss. Then the valve closes and instant torque!
That was really great!!! I wonder how much more egt the turbo would make over time/ how practical that motor would be on a road course....? What a monster!!
Blower tax wasn’t so bad on this for some reason. Maybe the turbo was just already pushing pretty hard
Excellent !!Richard but realistically how much would the supercharger bill cost turnkey?
Not sure
Rich if you were to duplicate that motor turned key how much would you charge
I DON'T DO THAT
Great comparison! Very interesting, how do you control your wastegate with the electronic controller, c02/ dome pressure? I’d like to see how you set it up.
I will do a Waste gate video
I bet that turbo set up is cheaper also. I do like the whipple and am exploring my option for an up coming drag week style build for my 65 El Camino
Yes turbos are way cheaper.
So in all reality what's the benefit of a super when turbo can make more power everywhere in the curve
immediate boost and packaging
Very good point plus amazing sound
What is the weight difference between the iron block and a Ls 3 Aluminum block and could the LS 3 GM crate motor 525 hp be used in this boost application?
yes on the boost with 525 crate
What SCR was the 383 Whipple engine at? What MAX SCR/DCR would you run the exact Whipple combination at? Thank you, @RichardHoldener!
9.8:1
@@richardholdener1727 I really appreciate the reply, Richard. What liter is the Whipple blower? Thank you!
I believe you are wrong about a turbo not costing engine HP. You have the significant exhaust backpressure that costs torque to compress the exhaust gasses to develop turbo boost.
the loss is minor compared to the losses associated with driving a supercharger-we know this because a turbo provides significantly more power than a blower at the same boost level.
OK, but there is a penalty associated with backpressure developed to drive the turbo charger. There are other issues involved but that factor has to be acknowledged.@@richardholdener1727
okay-if it makes you feel better, there is 1 hp loss from driving the turbo
I’ve heard you say every cam is a turbo cam lots but I think this is 1st time I heard every cam is a supercharger cam. This is good cause I bought stage 1 SHM n/a cams 3yrs ago and now I have an m122 for it.
Everytime I hit Turbo Boost on my 1982 Black Trans AM the car jumps over other vehicles I don't know what's going on with it and the car talks. The car is kinda a smart ass.
Is it a turbo 305 or an old Turbo Trans Am 301?
@@DavidValdezBigWaveDave Knight Industries turbojet "i'm just joking" I was talking about KITT from Knight Rider.
@@DavidValdezBigWaveDave I think there were a couple test mules with carburated 3.8l turbo engines in 3rd gen cars. There was the 3.8l FI that I think was a 1989 turbo trans am. The knight industry car wasn't just any Trans Am, it was a Recaro Trans Am
@@2010HarleyDynaFXD i get it now!! Genuinely gave me a good chuckle when it went over my head (the joke, not KITT)
Do you think using electric waste gate good for a street car?
Hey, hey, you two!!!!!! Play nice in the sand box.
I expected the turbo to win, but the boost curves are so different, it seems like cheating. The GT45 may be too small for this test. It's making 10 psi at low rpm, then boost falls off after 5700 rpm. The turbine must be going into choke. I have seen other Holdener turbo test video where the turbine is too big for the engine, and it provides a rising boost curve, which would make it more fair for the Whipple. On the other hand, the oversize turbo would have lower drive pressure at high rpm than the GT45 did, so it would make more peak power.
I've been wanting to see a test between a Whipple and an Eaton TVS of comparable displacements on the same engine and at the same boost level. I bet the Eaton would win.
The Eaton will Win. Whipple Can’t compete with the TVS efficiency. Maggie TVS would be best I think.
You are absolutely correct. I've tested several Whipples on a calibrated test stand back to back with a 2300 and 2650 and they don't even come close.
@@werks96 Is that in thermal efficiency or drive power? Or both?
@@andyharman3022 Basically it's both. Rotor clearances (rotor to rotor and rotor to case) and rotor geometry are the largest factors. i.e. if you have larger clearances inside the SC, you leak more air, causing more heat and less pressure.
Good test mate. What exhaust manifolds were on the turbo setup?
dont know how it will do on a dyno, but im still curious about compound boost. best of both worlds. hoping for this in the future
Richard, got a big Procharger laying around to put on a 4.8L? I've always wondered if you could get a flatter boost curve by using an oversized centrifugal supercharger and had a boost controller connected to the BOV to bleed excess boost at high RPMs. Even though it's oversized, theoretically because it's generating lower pressure, it'd wouldn't be a massive power hog vs using a smaller SC. But the bigger SC would be less efficient...hmm. It'd be a be a waste instead of using a turbo but It'd still be interesting. If anything it'd be good at blowing any leaves out from under your hood. :D
we have done that
Yay Super Ritchie split personality argument!
So many Die-hard blower fanbois can't comprehend the turbo making 5 more pounds of boost at 3500rpm banging on about the size and putting a CVT transmission on it this was a very decent blower totally humiliated by a 300$ wuhan war whisle if you want to put a CVT on the blower lets put a good VGT turbo in there and see how that plays out another sluaghter no doubt
Do a stock bottom end 302 with a b cam tfs heads vic jr and nos 200 to 300 hp shot
You should do a cold side wastegate on a centrifugal blower and measure the low end torque gain.
What
@@hondaservicecenter Google procharger with wastegate.
@@hondaservicecenter I want to see what kind of results he gets and what downsides he sees to the setup. You basically spin the blower harder to get more low and midrange torque without getting too much boost on the top end.
Hey Mr. Boost:)
I have a question you might be able to answer and talk about in a video.
Why is it that the twin screw blowers like Whipple and Kenne Bell don't give the same snappy throttle response the classic Roots blowers have? While the screw blowers do compress the air in the rotor section, they are still predominantly positive displacement blowers just like the Roots blowers.
What's your take on this?:)
I wasn't aware that twin screws lacked snappy throttle response
@@richardholdener1727
I didn't mean as in not snappy at all. But with the stuff I've done, I've never seen them be as "explosive" in their throttle response as a classic Roots. Not sure how else to explain it.
The Whipple doesn't have the airflow at lower blower speeds to produce the same boost as the turbocharger. With a larger capacity supercharger you could indeed match the boost level of the turbo, and it would be a very interesting test to compare parasitic losses at the same boost pressure.
Some will argue, "Well what about the rising boost curve that superchargers are known for? If we were able to achieve equal boost at lower rpm levels, we'd be overboosting at high rpm levels, and there's no way to control that."
Well yes, but yes we can. It's just no-one does it. There are couple of ways we can control a rising boost curve. First, we can introduce a blowoff valve on the pressure side of the supercharger to bleed off excessive pressure at high rpm levels. The second way is more complex, and that involves varying the blower drive speed to speed the blower up at lower rpm levels, and slow it down at higher rpm levels.
Would it be worth it? For testing purposes, yes. Everything in the name of science. For the average person? No, absolutely not. It's much easier and simpler to design a turbo system. Would it be cool? Certainly. Instant power with no lag at all? That is cool, and costs be damned.
A CVT to drive the blower would take up a lot of space, but it would be cool to see. Maybe someone could take a CVT out of a Nissan or high-performance snowmobile and cobble it up to drive a supercharger.
But once you think about it, a turbocharger is a centrifugal compressor driven by a pneumatic CVT. Functionally, it allows the shaft speed of the supercharger to change at a variable ratio to the engine crankshaft speed. Mechanically driven superchargers are constrained to operating at a fixed ratio of crank speed. There have been multi-speed and CVT transmissions used to drive centrifugal compressors, most famously the WW2 Merlins with 2-stage, 2-speed superchargers. Some of them even had 3 speeds. An example of a CVT driving a supercharger was on the Napier Nomad aircraft diesel, that had a Beier stepless variable speed drive between the crankshaft and axial flow turbocharger. The complexity of the shaft system in that engine was mind-boggling.
@@andyharman3022 a snowmobile style cvt would be the simplest way to vary blower drive speed. The difference being that the drive pulley on a snowmobile is in the open position at idle and closed at high rpm, whereas you'd want the drive pulley closed at idle and open at high rpm.
I just wanna see the NA then the super then the turbo on the same engine…. Of course that takes time and work but it’s on a dyno so plenty of room to work.
How you make a 383 on 5.3 ls
Just pistons and crank Can you do it like that or you need the whole kit
a 383 required boring the block to 3.902 and adding a 4.0-inch stroker crank. The 383 stroker combination will include new crank, rods, pistons and rings and bearings.
@@richardholdener1727 so with 5.7 pistons and 4 inch crank you could make it
And using the same rods
Love this channel don’t think it’s one better‼️.
What was the compression was the motors and can they be used in daily driver.
I’ve always and will continue to always say: there is zero advantage to a supercharger (especially a centrifugal) over a turbo.
Borrowing horsepower from one end of the crankshaft, to add it to the *other* end is against my religion.
Evidently you havent owned them. I have owned them all....and currently a twin turbo car and a Procharger car. Centri's definitely have many advantages . You don't race dyno numbers or boost curves....you race cars. But hey, dyno numbers impress people that don't know.
I have owned Vortech cars, nitrous cars and turbocharged. The turbocharged car was 6 tenths quicker in the 1/4 mile from the Vortech with ZERO other changes. I don’t solely race dyno’s either....but thanks
I wonder what the fastest quarter-mile cars have on them? I'm talking about the cars that go from 0 to over 300 in 4 seconds.😁
@@kcdesignconcepts5216 only because top fuel rules prohibit turbochargers, my freind. Everywhere turbos are allowed, they rise to the top.
Like to see a bigger Whipple on it excellent video Rich.
So what would be best to slap on my 2021 Silverado trail boss? A supercharger or procharger or turbo or twin turbo??
ALL GOOD CHOICES
😂 😂 lmao- hilarious start! Cheers
How about charts showing cfm per horsepower .And a chart showing throttle body area per horsepower. Maybe you could do that from previous tests. CAT want to know.
I've found it odd you gush over superchargers but consider combos mostly in terms of drag racing. Like most others, that supercharger would be crushed outside a small road course or limited traction.
gush over superchargers?
Specs on the gt45 turbo please?
When is richard gonna test a rotary engine?
Oil or water?
@@SilentKilla92 What do you mean? (I am not very knoledgeable with dorito power)
Probably never.
My truck is all stock it’s awesome 😂