- Oct 28, 2016
- Reaction score
- My Car
- My 13 year old wants to build a 1971-73 Mach 1 Mustang for his first car. We have found a Grabber Blue with white interior base model 1971 Mach 1 to start on.
My Lord, I have read so many contradicting things about these heads. I would like to use the original heads in my build. Can these heads be modified to perform decently for a well built daily driver? If the heads have the small 2.04 or 2.05 intake valves do you think stepping up to a 2.08 or 2.09 valve will help? I am not shutting for the stars just around 375hp.