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  1. #51
    Join Date
    Jun 2010
    Location
    essex in england
    Posts
    214

    Default Re: What year Big Block Buick to Build?

    can any one help thanks kev

  2. #52
    Join Date
    Feb 2002
    Location
    Oakland Gardens, N.Y.
    Posts
    27,439

    Default Re: What year Big Block Buick to Build?

    Quote Originally Posted by kev 190164 View Post
    can any one help thanks kev

    Yes you can use the 70 heads on the 75 block. This page explains the only concerns you can run into when using different year heads on different year blocks.
    http://www.buickperformance.com/idblock.htm

    NONE of the problems are insurmountable. I would get with the machinist and make sure that your final compression ratio is at least 9.5:1, 10:1 preferred. The machinist can adjust the deck height and/or mill the heads to make that happen.

    When it comes to HP, everything is head flow. To that end, I would budget for some porting if you can. I try never to predict how much HP an engine will make. I really don't understand why anyone asks to tell you the truth. Build it with 10:1, and good flowing heads, and it will scare you when you lay into it
    Larry
    1998 "Fully Optioned" SC3800 Riviera
    70 GS 455 Stage1, TSP 470, 602 HP@ 5900, 589 TQ @ 4900
    TA Hyd Roller Cam, 230*/238*, 112, .544"/.577" lift, 4-7 swap
    MSD Digital 6+, Ignitionman Distributor w/MSD trigger
    THM400 with Ultimate 258mm converter, Gear Vendors OD
    AED 1000 HO Carb, 800 CFM 7042240 Quadrajet
    8.5 10 bolt, 3.73's Race weight 4025lbs.
    Best E.T. 11.54 Best MPH, 116.06
    Larrymta@verizon.net, GSCA #291
    BPG # 1063
    N.E. GS/GN Club Assistant Director

  3. #53
    Join Date
    Jun 2010
    Location
    essex in england
    Posts
    214

    Default Re: What year Big Block Buick to Build?

    hello all. did not get the early heads. i have bought a pair of edelbrock heads and the edelbrock inlet manifold. will this be a good combination with the 9.51 pistons and ta 288-94h cam. thanks kev

  4. #54
    Join Date
    Feb 2009
    Location
    Monticello, KY
    Posts
    183

    Default Re: What year Big Block Buick to Build?

    Larry70, tried to access the "useful casting numbers" but i get an error message that says --Invalid Attachment Specified,etc. Not sure what this means. Will try again later, would like to know these valuable numbers. thanks

 

 
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