Over the winter there was a guy here in central Nebraska that built a turbo charged 400 using a 500557 block. I don’t know much about who did the engine, but they clearly had no clue what they were doing with Pontiacs. It didn’t even have main studs. They broke one of the main bulkheads out tuning it on a wheel dyno.
Even so….It broke at 860+HP….AT THE WHEELS!
Last edited by Jay S; 04-03-2022 at 09:09 PM.
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