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  1. C10 Turbo small block Rear End HELP!!!

    GM Builds
    This is my fist turbo build that has gotten a little bit wild! Just a short list it’s a 421sbc, 92mm comp wheel, 9.8:1 Holley super sniper 1250 and lots other things. Tranny is th400 with trans brake built for hopefully 1200hp. My question is I purchased a 12 bolt to replace the rear end. Was...