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Discussion Starter · #1 ·
1/4 mile in a 87 c20 350 cam vortec heads z28 springs headers carb spacer .040 over 2 eye valve relief dish pistons th400 trans 4.11 gears I'm guessing the motor probably makes 375 maybe 400hp?? I'm hoping low 15's maybe high 14's so I'm I way off?
 
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