actually, from memory, the 4V performer isn't that much bigger than the 2V.
It would be worth comparing the port sizes before getting too excited. If you have any porting done they may be a closer fit than you think.
The F351-4V (Performer) manifold intake ports were smaller than the actual 4V head ports to induce better flow. The Ford Performance book states that it worked and not to modify them. Hope the shop exchanges it for a 2V for free for you but if not chuck it on and see how it goes and post your results. We discussed this about a 4v Boss manifold on a 2v head motor previously but don't know how it went !!! Good luck.
it seems ok got it from a joint called easy power only $280 vpw wanted bout $450 but found out it was second hand just sand blasted. also come with a broken bolt in one of the threads so had 2 get it tapped out
reason didnt exchange it was cos got it mail order couldnt b bothered arranging freight n that
put the gasket up 2 it b4 bolting it on was really bigger in any place also oppened up the heads a bit so shouldnt be much diff
I wouldn't be in a hurry to change it. Whilst talking to a reputable engine builder here in Perth they said a 4V manifold on a 2V engine works great. Close your eyes and don't look at the awful lack of port matching and you'll be right!! Good for and extra 20-30ft/lbs of torque - application dependant. So maybe you got a good deal after all!!
Ref: Kostecki Engine Centre - build professional drag cars and do a lot of V8 Supercar heads.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Ford Forums
1.4M posts
115.4K members
Since 1999
Ford Forum is a community to discuss all things Ford. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more!