Spx vrs sp2

Discussion in 'Race 400/430/455' started by Bens99gtp, Dec 11, 2017.

  1. Bens99gtp

    Bens99gtp Well-Known Member

    Don't have a specific number in mind......this short block with iron head flowing around 250/195 went 10.90s on good days but mostly 11.0s. It see's 0 street time, just looking to make a great bracket car........in a lot of the 1/8 races I end up being one of the slower cars it seems running in the 7.0 and 6.9s. So the new heads were the logical next step. I know my car is heavy at 3850 car and Driver on either 29x 10s or 30 x 9s neither tire makes a huge difference and depending on what in at when I need is what I get. I would hope with a little more squeeze I could see low 10s. The next step is build a car that scales in less.

    I don't have the funds right how to swap intakes, I never new b4 I bought the sp2 an intake like the spx could even be made to run on the te2 heads,
     
  2. buicksstage1

    buicksstage1 Well-Known Member

    Go to this link and check Bills stg2se, 308s etc that made 703hp I can't remember the flow #s on his heads as I did them last year but I think they were in the 350's @ .600 the guy that ports Bobs heads is a excellent head porter so they will make excellent power and run hard. I think that 308s is a great grind that has made great power on iron or aluminum heads and sounds really good also. http://www.v8buick.com/index.php?threads/out-with-the-old-in-with-the-new.323821/
     
    Last edited: Jan 22, 2018
  3. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Bump, good info here
     
    70 GMuscle likes this.

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