Quote:
Originally Posted by Finaltheorem47  Buddy, the 4.0's are pushrod engines, there is no 4v version!
The 4.6 is a modular over head cam engine. It comes 2v as a GT or 4v as seen in cobras and mach 1's If your planning on swapping a 2v for a 4v, you really need a 4v engine to pull the parts off of, even up to the wiring on the engine, you need to swap it with 4v stuff! |
You're almost correct. The 4.0's are indeed pushrod engines, however, mustang GT's since the most recent redesign have the 4.6L mod motor with 3 valve heads and variable valve timing (hence the bump from 260hp to 300hp in the 2005 model year.
Switching to a 4v would make no sense, since the 4.6L DOHC really didn't make any more power than the current 3v.
You want more power out of a 4.6? Supercharge or don't waste your money. You want more power out of a 4.0? Trade it for a GT or don't waste your money.