Capn_Morgan
Member
- Joined
- Mar 29, 2015
- Messages
- 17
- Reaction score
- 0
- Location
- Smithsburg, MD
- My Car
- 2014 Mustang GT Premium w/Track Pack.
1972 Mach 1 Deluxe.
I’m sure this has been discussed multiple times over on this board but I’m restoring my 1972 Mach and I’ve been looking at numbers for the motors from 71-72. I know 72 was the start of the emissions crack down but how did they derate the motors from 240 to 177 on the 351 2v? I know the compression was lowered from 9:1 to 8.6:1 but what else? I have a hard time believing that was it. Did they just pull vacuum? Or lie about numbers? Any incite would be golden.