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Old 04-07-2015, 09:35 AM   #30 (permalink)
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Originally Posted by silverHX View Post
set timing to zero. Not a 454 expert or anything but my 350 tbi has a way lower knock count when i data log it with the base timing set to zero.
And your cranking compression is likely 40+ psi more than any stock 7.9:1 454, especially if you're at lower elevation and the 454 is at higher elev. The LO5 TBI 350 starts over 9.1:1, with a much earlier intake valve closing point, and higher-velocity intake ports.
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