Would like some opinions on if i should start with 02 fbody or 04 gto tune, and/or swap to speed density os for my 1980 z28 start up tune and what to change?
Has 2006 L33 5.3l punched out to 5.7
243 truck heads
LS6 Intake/injectors
TBC
1 7/8 long tubes
flat top pistons
summit 8707 Stage 2 Pro LS Cam. 226/238 113+3, .600/.600 Lift