Catalyst makes this statement on his 1971 page:
"Wider, larger and heavier, the 429 would not readily with into the 1970 Mustang engine compartment, which is one of the reasons that the 1971 Mustang got bigger."
This is a statement that I have heard and read many times. However, I don't think it is a true statement. The 429 wedge fits quite nicely in the engine compartments of '67-'70 Mustangs. I've seen it done many times.
I have also heard and read many times that the increase in size was to be able to fit the Boss 429 into the bay. However, after speaking to a couple of people that have '71s with Boss 429s in them, I don't think this is a true statement, either. According to those two who actually have this setup, the Boss Nine still doesn't fit unless you use the '69/70 Boss Nine shock towers.
Anybody got any further info or comments?
Posted on Apr 2, 1999, 9:13 AM from IP address 138.26.184.108