1971 Buick 455 GS F/SA G/SA Build

[Mark Yacavone]

Originally Posted by HP HUNTER

Thanks, I have tested Aug 19. In F/SA trim I ran 11.40 with zero tuning at Pueblo Colorado 4800 feet elevation, 25.10 baro, 7240 DA, .9508 correction, running the Turbo 400 with 4.10 gears. My next change is testing different carbs, a metric trans and 4.30 gears along with a rear end redesign. I really wish I had the time to really get after this combination I think it could really run.

You ran 11.40 actual et? What is the index at that altitude then?
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