3-valve 5.4 heads

[BLACKSUNSHINE]

I was just wondering if you could put a '05 3 valve head on our L's. Their getting petter flow results than the DOHC's, and respond like crazy to a blower. The blocks are the same from what I understand, would this be a direct swap minus the variable cam timing? The PCM would have to be able to control the VCT, so you would have to mecanically lock the cam timing.

[99WhiteBeast]

I was wondering the same thing. I bet the intake side of the heads wouldn't match up

[cpeapea]

plus i dont think anyone is making cams yet for the new head designs.

[BLACKSUNSHINE]

Yeah but they will... Terry know anything of this?

[L8 APEX]

If they are twinning the 3rd valve then it should work fine. But for the cost of heads you can buy a KB. Guess which will make more power:D . These trucks can make 500+ daily driven HP on stock heads. If I were to change to anything it would be CNC'd stock heads with new valves. 3 stock ugly valves in rough stock ports would not gain my HP at all.

[BLACKSUNSHINE]

If they are twinning the 3rd valve then it should work fine. But for the cost of heads you can buy a KB. Guess which will make more power:D . These trucks can make 500+ daily driven HP on stock heads. If I were to change to anything it would be CNC'd stock heads with new valves. 3 stock ugly valves in rough stock ports would not gain my HP at all.


Thats true. I guess in a few years it might be easy to score some 3 valve heads for little cash, but I guess porting the stockers would be cheaper anyway, and flow better. I had 4 G's laying around I would defidently grab a KB instead of 05 3v heads. I just know of some centrifugal blowers making 600+ flywhell HP on the new 4.6's and if they flow as good as they report and they were cheap to get ahold of, then it might be a respectable mod. Maybe not.