Hi all, first post here.
Sean Hyland Motorsports does a lot of work with the Ford modular engines (4.6, 5.4, and the V10). They bore the 4.6s up to 5.2 and the 5.4s up to 6.0.
My Crown Vic has a 4.6 and as I've always understood it the PI (performance enhanced) heads are still a bit better then even the newer 4.6 heads.
I dont' know why there are so few 4.6 "capable" cobras around. A stock 4.6 makes more power, burns less fuel, and is cleaner burning then a stock 5.0/302. And the 4.6s have been around for over 10 years now. A little more $$$, but worth it IMHO.
Some nice GT heads
Some nicer Cobra heads
I wonder if a 5.4 will fit in the MKIIIs
- JW