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455 build lots of questions?

Discussion in 'The Bench' started by bigblockbuick, Jul 22, 2013.

Tags:
  1. bigblockbuick

    bigblockbuick 66' Buick Skylark

    hello again its nathan here with my 66 skylark 2 door im swapping a 455 buick into it new... edelbrock performer intake ...edelbrock 650 carb... .30 overbore.... comp thumpr cam 96-600-5 279/297 i think its a 107 lobe seperation cam... Davis Unified Ignition h.e.i. distributor... cloyes true roller timing...T/A performance shorty headers...spintech race chamber mufflers...T/A performance engine mounts... everything else is stock what kinda horsepower am i going to make. and is my Buick.Olds.Pontiac.Caddy th350 automatic trans with a shift kit and 2500 stall going to handle the big block power. what gears should i go with also as far as i know the rear end is all stock from 66 but i don't really know?
     
    bigblockbuick, Jul 22, 2013
    #1
  2. 462 Chevelle

    462 Chevelle 462 chevelle

    get a qjet built by mark northcutt. if its a street car I would go 308 gears. street strip 342s. and its a toss up with that cam. I also just noticed that youre from south texas. that's where mark is if you were wanting to go that route. stock 455 had 800 cfm qjet.
     
    462 Chevelle, Jul 22, 2013
    #2
  3. ceas350

    ceas350 "THE BURNER"

    HP idk... But post some Vids :)
     
    ceas350, Jul 22, 2013
    #3
  4. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    LARRY70GS, Jul 22, 2013
    #4
  5. carmantx

    carmantx Never Surrender

    Thanks Lonnie.

    Yea, the 650 carb is too small for you to get the most performance, they had 800 cfm quadrajet from factory.

    Other big questions, what year is the block and heads? Later 455 heads were no good for performance. Sounds like you got a good start on it though.
     
    carmantx, Jul 22, 2013
    #5
  6. bigblockbuick

    bigblockbuick 66' Buick Skylark

    Some of the math I have done on the carb calculator says 650 should be sufficient but I may go with a 700 cfm instead its a street car not a drag car.. I went with a mild to radical cam and headers for pure ground pounding galloping sound... the engine is a '71 out of a GS...
     
    bigblockbuick, Jul 22, 2013
    #6
  7. sean Buick 76

    sean Buick 76 Buick Nut

    For the street a 455 Q jet would be the best match and gain a TON of HP and TQ over the 650 Edelbrock.
     
    sean Buick 76, Jul 22, 2013
    #7
  8. 462 Chevelle

    462 Chevelle 462 chevelle

    those calculators don't work on buicks. buicks have small ports with a big bore. high velocity in the runner.
     
    462 Chevelle, Jul 22, 2013
    #8
  9. John Codman

    John Codman Platinum Level Contributor

    A very strong THM 350 can be built, but I doubt that most stock units will handle the big block Buick. I shredded one with a only-slightly-more-then-stock SBC 400. I then got the Ron Sessions book on the THM-350 and built one that would stand up to the engine. For the record, not all THM 350s are created equal. Some are a lot beefier then others. It depends what it came out of.
     
    John Codman, Jul 22, 2013
    #9

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