Im going to fire up my new 383 for the first time this weekend and wanted to know if I should change anything in my prom for the break in?Im useing a 165 ecm.My bin for the old 350 was pretty close to 128 BLMs fuel wise and didnt really touch the spark adv.New spec's are in the sig.

 

I would change the Cyl Volume to 383 Volume & let it rip. that ought to be close enough to burn the motor in.

BW

 

hes working with maf. id sasy run it but expect it to detonate slightly under heavy load. aside form that it looks ok i would pull out the AE advance.