Posted By: Moparrob68
INDY 440-1 CNC porting options? - 10/17/20 02:10 AM
Have been running an out of the box set of 440-1 heads on a 13 to 1 compression 440 for the last 4 years and the combination is maxed out. Was thinking about sending them back to INDY for their 325-CNC porting and a good valve job.Is that a good plan or should I look at other options?