few pulls on the dyno for the SD tune...
#14
#15
im with TJ on this one!! they do make a lot of power for the money... if im at 8psi how much more would i have to run to hit the 650 mark with meth and timing? im thinking 14psi and 18* or so....
#16
You could leave it a 15* and it should make the number by about 14psi. Chris made 655@14psi with a 8.5:1 370 stock heads and a ls6 cam through heavy 22" wheels and a unlocked converter.


