Quote:
Originally Posted by silverHX
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.