the 383 is about 9.5 to 1. we rebuilt the motor years ago and barely ever ran it.
the 440 looks like the pistons are 1/8" down so im guessing it will be low 8 to 1 compression. Im hoping with the stealth heads we would get at least 8.5 to 1 compression.
Regardless of the motor that goes it, new headers will be coming. TTI most likely.

Last edited by 8urvette; 10/16/21 11:19 PM.