505 bbc

Поділитися
Вставка
  • Опубліковано 7 гру 2024

КОМЕНТАРІ • 85

  • @489special9
    @489special9 10 місяців тому +10

    Pretty impressive even with a small cam. Not bad for oval ports too!

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +3

      The 781's came within 34 horses of the AFR heads, but I was disappointed. I really want to see them get closer than that,

    • @musclebone7875
      @musclebone7875 10 місяців тому +4

      ​@@dzperformance7360Like David Vizard says "THE BIG BLOCK CHEVY IS UNDER VALVED" to make big horsepower with those would need atleast 2.25 to 2.30 valves. Especially with that old design.

  • @Scubasteve22
    @Scubasteve22 10 місяців тому +4

    Thanks a bunch for sharing. Mark at vortec pro I think gets arounnd 650+ with the 781 's on a 496 with a 238 isky roller. But i think he spends a fair amount of time on the heads. Might give Nick at clay smith cams a call. They have really fast service and their cams for the same duration are well over 600 lift. We have had great success with their products. And your talking to the guy on the phone , who is most likely gunna grind your cam..Have a great day!

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +1

      Marks a master with #781 cylinder heads I own a set,, He did for me,, He's just on a different level, I Believe his #781 heads are worth 35 horsepower. Better than anything I've ever did,

  • @briandidier3850
    @briandidier3850 6 місяців тому +2

    Great video! I put a set of Enforcers on my new 489, but haven’t run it yet. I haven’t seen to many videos featuring the Enforcers, so thanks for sharing dyno numbers !

  • @dzperformance7360
    @dzperformance7360  10 місяців тому +1

    I should have mentioned the timing,, I'm not playing with the timing on these combinations. For optimal horsepower, we just set it at 38° on every single big block. Because that's what all the Medium compression hydraulic roller, big blocks want give or take a degree.

  • @FORCFED
    @FORCFED 10 місяців тому +3

    Everyone talks crap about the AFR enforcer line but it gets it done every time. Thanks I'm buying some sir 🙏👍💪😎 also I have so Aluminum rods 6.385 MGP only 20 hits with JE 31cc dome pistons 4.500 bore with rings all together still , I also have a solid roller cam 775 lift came out of same engine... if you're interested sir . I'll give you an awesome deal or we can make a Dyno mule out of it 😁 all you need is block and crankshaft. Let me know ty thank you for all the information.

  • @hangfire6368
    @hangfire6368 10 місяців тому +3

    I love watching your comparisons. I wasn't aware there was enough material to go .100 overbore on a stock block but I'm not as familiar with big blocks. How much meat is left in the cylinder walls?

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +5

      I had this block sonic checked, anything that you bore over .070. You have to have checked for core shiftage, but many of them. You can go to .125

    • @hangfire6368
      @hangfire6368 10 місяців тому

      Thanks for the info! @@dzperformance7360

  • @FORCFED
    @FORCFED Місяць тому +1

    Question, you ever run beehive springs on a hydraulic roller cam on a BBC aluminum head? If so what part number and any advantages? Thank you sir great videos

    • @dzperformance7360
      @dzperformance7360  Місяць тому +1

      I've never done it but I understand you can

    • @dzperformance7360
      @dzperformance7360  Місяць тому +1

      I use the 911- 16 valve springs on the very small hydraulic rollers I run the 929 - 16 on medium sized rollers and the 933 - 16 on the bigger hydraulic rollers

  • @samtaylor1010
    @samtaylor1010 10 місяців тому +2

    I sure love your channel! Thanks

  • @msh6865
    @msh6865 10 місяців тому +3

    You know, I think most BBC oval port heads that are well prepared are good for 575-600 hp with a moderately sized hydraulic roller cam. Just never seen any of them do badly.
    Nice comparison.

    • @Anarchy-Is-Liberty
      @Anarchy-Is-Liberty 10 місяців тому +4

      Hell, you can make 550hp on stock 781's!

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +3

      I believe you're right ,,thanks for your input ,,thanks for watching

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +2

      I believe you're correct,

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +4

      You know, that would be a very cool test stock. Other than a basic valve job see what they would make on a strong motor,maybe 468ci?​@Anarchy-Is-Liberty

    • @msh6865
      @msh6865 10 місяців тому

      @@dzperformance7360 how about trying a set of #820's or #292's? I think people are sleeping on those numbers. Their combustion chamber looks very promising for unshrouding the valve.

  • @markgiraldes4062
    @markgiraldes4062 10 місяців тому +2

    Have you done a compression test on any of your 496 engines just curious how much pressure they make ? I’ll be checking my 505 that was run in a boat with Promaxx 319’s thanks I’m subscribed 😎🇺🇸

    • @dzperformance7360
      @dzperformance7360  10 місяців тому

      No on compression test ,,thank you for watching.

  • @davidleary823
    @davidleary823 10 місяців тому

    Nice. Those 781s with more work would have matched the AFRs, but you can say the same if the enforcers . That cam is tiny for a bbc though. Nice video, great info.

  • @leesanders8824
    @leesanders8824 10 місяців тому +1

    What are your thoughts on the oval port closed chamber heads? I have some 390s on a 468. From what I've read, they originally came on a 396.

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +1

      I don't believe i've ever owned a set of 390's, Do it and let us know what it produces

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +1

      I see you ask what my thoughts was on close chamber heads , They work just fine. If you put bigger valves in them , you need to have the machine shop d shroud them just a little bit on the intake side,, If you leave stock size valves in them , they work just fine the way they are

    • @musclebone7875
      @musclebone7875 5 днів тому

      I had a pair of 390 closed chamber heads on a 402 bbc. They were good heads lots of torque. 👍

  • @leonardfoster6252
    @leonardfoster6252 10 місяців тому +1

    A stock 454 block can be bored as much as .125", 70 block, two bolt main... Has thick cylinder walls, I know I have one for my 468"... It is 4.310" and can go another .065". That is 32.5" per side...

  • @MrsSunshine75
    @MrsSunshine75 10 місяців тому +2

    Wow those 781’s were impressive! Great vid, I’ll say it one last time, your gonna shit egg rolls if you ever get to dyno another build like that one with smaller tube headers!

    • @duc626
      @duc626 2 місяці тому +1

      The small tubes are better? 2”?

    • @MrsSunshine75
      @MrsSunshine75 2 місяці тому +1

      @@duc626 On a friends 462, small solid roller 10:1 Brodix race rite heads 1 7/8 headers picked up almost 30 ft lb over the 2 1/8 dyno headers!

  • @DarcyPretula
    @DarcyPretula 10 місяців тому

    Great information. I would like to see the total timing that each cylinder head wanted and if you could also share the engine vacuum at idle, maybe in the description, this would be very helpful for those of us planning on building a similar combination. cheers

    • @dzperformance7360
      @dzperformance7360  10 місяців тому

      It's always set at 38 degrees, To keep the testing universal

  • @conservativecrusader80
    @conservativecrusader80 10 місяців тому +1

    Hey Nick, love the channel! I found Mark's channel Vortec Pro a couple of years ago and it seems he came out with alot of videos then there was a break then he came back with 2 videos then nothing else? I binge watched all his stuff, i really liked how he explained and talked you through the thought process and how the prepare an iron headed stock crank, rod combo, i hope ge comes back with more videos. Anyway, your content is really resonates with me and is really insightful. I do have a question/suggestion for a future build, i live in central Indiana and E-85 is everywhere around me and you stated you are also a Midwestern so how about a high compression build similar to what you do but with at least 12:1 compression or more. I also really liked the poor man's 396 stroker, more of those please. Anyway just wanted to take a moment and let you know what your doing is very much appreciated.

    • @dzperformance7360
      @dzperformance7360  10 місяців тому

      I appreciate you watching ,I appreciate your input,, I've got that request several times about doing a high compression E85 street strip motor I'm gonna get on that. I got plans to do a 496ci 12.3 to 1. e85 motor , It probably be a couple months but I will get that video out, With dyno testing

    • @conservativecrusader80
      @conservativecrusader80 10 місяців тому

      I realized my mistake, my bad. I was talking to my friend Tony about your channel and I guess I had his name in my head🙄, that future build sounds great. I'm definitely looking forward to your channel growing.

    • @conservativecrusader80
      @conservativecrusader80 10 місяців тому

      Have you ever heard of Skip White Performance, they are out of Kingsport Tennessee. They sell parts and do machine work and they have what they call Bravo 335 aluminum BBC heads sold in pairs bare or complete and they seem like the best I've seen for the money, again not seeing them up close, who k ows, but they are selling them bare in pairs for $829 and complete depending on a hydraulic roller or solid package for around $1350, anyway it'd be great to see someone like Eric W. to give them a review.

    • @dzperformance7360
      @dzperformance7360  10 місяців тому

      Thank you so much no big deal at all,​@@conservativecrusader80

    • @dzperformance7360
      @dzperformance7360  10 місяців тому

      I use skipwhite performance rotating assemblies oftentimes but i've never used any of their heads,, I've had good luck with that company

  • @danielamosjr.2138
    @danielamosjr.2138 7 місяців тому +2

    I am building a 505 now except it’s 12.5.1 compression 714in solid roller with a 1050 Quick fuel dominator I wonder how much more hp my combo will make than this my heads flowed in the 360s

  • @jameswheeler5039
    @jameswheeler5039 10 місяців тому +2

    For a street engine do you recommend hydraulic roller, solid or flat tappet cam? I love your channel doing a great job o

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +1

      Thanks for the compliment thank you so much for watching,, The only reason i'm using solid rollers in this test is just because it's what i've got on the shelf and it's easy,, For street strip use, I would always go hydraulic roller. A good name brand like Howard's. But I would never recommend flat tappet. They're a disaster,, The metal that use on those cams. Now you are guaranteed to have a flat cam very quickly,

  • @Handlehandlebars
    @Handlehandlebars 9 місяців тому

    Whats your thoughts on 781 heads for a very mild cammed tow motor ?

  • @junkyarddawgfixit8970
    @junkyarddawgfixit8970 10 місяців тому

    Very nice, wonder how much you could lower the duration on that combo using the 781 at 119cc without giving up too much power and improve low speed drivability for a 4-speed street car. Thanks, and Keep Rolling........

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +1

      I was reluctant to show this combination. It's not that great if the cam had a little more Lift a little less duration on the intake and more on the exhaust. It would have made more power and been evan more drivable,

  • @FORCFED
    @FORCFED 10 місяців тому +1

    What's the most compression you have run on 93 octane pump gas??? 11.5.1?? Thanks BBC aluminum heads also your recommendation max compression 93 octane tuned right?

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +1

      It really depends on how big a cam. How much cam duration and overlap you've got,, Iron heads=9.8 to 10.8 to1 depending on cam. Aluminum 10. to 11.5 to 1 depending on cam ? Those are the maximums in my experience,, Little cam you gotta stay towards the bottom, medium to large. You can go towards the top.

    • @FORCFED
      @FORCFED 10 місяців тому +1

      @@dzperformance7360 aluminum Brodix 3 heads, 279 intake/ 288 exhaust @.050 and 765 intake valve lift/ .750 exhaust valve lift, 108 , timing events 31.5 / 67.5 exhaust @ 0.050 separation 111
      548 cubic inch
      Thanks 🙏👍

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +1

      my 555 in my 1955 Chevy has a 264/274 @.050 with 11.4 to1 runs and races on 93 octane, In my opinion you could go 11.5 or more ?

    • @FORCFED
      @FORCFED 10 місяців тому

      @@dzperformance7360 thanks for you know your cranking compression please? Thanks again sir

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +1

      no

  • @dzperformance7360
    @dzperformance7360  10 місяців тому

    That's a wicked combination

  • @deuceinfinity
    @deuceinfinity День тому

    They DZ, can you recommend a shop that ports 781?

    • @dzperformance7360
      @dzperformance7360  День тому +1

      @@deuceinfinity that's a tough one anyone that's good has got a 9-month weight

    • @deuceinfinity
      @deuceinfinity 22 години тому

      ​@@dzperformance7360 thanks, I have a 454 with a pair of 781 heads and it seems better money to have 781 ported and valved rather than spend the money for aluminum heads. weight is not a disadvantage and staying 454-496 cid shouldn't need more head cfm for engine rpm to get the job done. need to ask locally, someone will know how or who. Love the channel!

  • @Mr.landon466
    @Mr.landon466 3 місяці тому

    Hi dz, do you have contact info? I’m wanting some cam advice for my street 505 in my 72 camaro. Hydraulic roller and afr enforcer or promaxx 317 heads. 91 octane fuel. Thanks!

    • @dzperformance7360
      @dzperformance7360  2 місяці тому

      816 213 7204 Nick you can text me and I'll call you back if you want to talk about your project I'll give you my opinions

  • @hankclingingsmith8707
    @hankclingingsmith8707 10 місяців тому +2

    WHAT IS YOUR GAME ? .DO YOU DO THIS MOSTLY FOR FUN?, OR ARE YOU SAVING THE HOARD FOR BETTER TIMES BECAUSE THINGS ARE STARTING TO GET HARDER TO FIND AT REASONABLE PRICES. JUST CURIOUS. ANYWy good info as always. Have you ever thought of doing a 525 ??

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +3

      My day job, I own a construction company,, But I have assembled motors for myself. Friends and family for over 30 years. Yes, it's mostly for fun, but I'm designing my own line of camshafs and carburetor spacers. Thanks for asking!!! Thanks for watching !!

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +1

      When you say 525 what bore what stroke?

    • @hankclingingsmith8707
      @hankclingingsmith8707 10 місяців тому +1

      @@dzperformance7360 454 block bored 80 I think mabe 100 and I think 4 3/8 crank. I have to look it up. It will make over 700 with 700 torque

    • @hankclingingsmith8707
      @hankclingingsmith8707 10 місяців тому

      @@dzperformance7360 David wizard built one 727 torque. 800 horses. I just seen video. 4.5 stroke

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +1

      yes , I have built those, That's too long of a stroke for a short deck. It creates too much windage. I've never produced any serious horsepower with those but they do make stupid great Torque,

  • @leonardfoster6252
    @leonardfoster6252 10 місяців тому +3

    My 468 makes 1.7 hp per cubic inch... 12.3 comp. BB-2 310 cc, heads. Regtangular ports, gasket matched to intake, Brodix round top intake with HVSS 2" 4 hole tappered spacer, 1050 cfm Dominator... 2.190" intake and 1.88" exhaust valve. Heads as cast.

    • @dzperformance7360
      @dzperformance7360  10 місяців тому +1

      Wicked combination

    • @ekitching
      @ekitching 6 місяців тому +2

      Wow thats really impressive. Can u run it on pump gas?

  • @donwalsh7521
    @donwalsh7521 10 місяців тому +1

    Got a similar build can't wait to put my tunnel ram on it hope to see 700 hp

  • @chevyfan82
    @chevyfan82 10 місяців тому +2

    👍

  • @mattrosenboom4810
    @mattrosenboom4810 9 місяців тому +1

    Unles vortecpro did the heads your missing out big time, of course AFRs ar always better!

  • @funfun8095
    @funfun8095 4 місяці тому

    MY La Don... Not Mila Don

    • @dzperformance7360
      @dzperformance7360  4 місяці тому

      Sorry about that I will work on my vocabulary, pronunciation

  • @DPWPERFORMANCE
    @DPWPERFORMANCE 5 місяців тому

    Cool video! This is the stuff I'm into to 😎