My 5.4 Build
#112
4v > 2v
Thread Starter
#114
#115
4v > 2v
Thread Starter
My engine builder recommended Mahle rods and pistons to me. What are you doing to your 4v? Have a turbo planned or anything exciting or just simpl rebuild?
#116
Nothing major really. Slightly higher compression, custom spec cams, going to have a mid length runner intake built. Something shorter than factory but no short enough to completely kill low end power. I wont be revving it to the moon so 5k is as far as it will go. I would use SCAT I-Beams if you plan on boosting it. If is a mild built motor stock rods will be fine. That what i'm going to use. Looking for 350/350 to the wheels. My navigator is 290/320 to the wheels and its basically stock with a tune.
#117
4v > 2v
Thread Starter
Thats all im shooting for is 350. Ive thought about using stock rods since I won't be boosting it but i dont know the history of the engine so its worth it for me to buy new rods.
#118
350/350 should be simple with out cams wouldn't you think. For the price of cams, couldn't you port match the intake and port the heads a little, With a 10.25:1 cr you'd be there
#119
Doing the math it were talking close to 440 to the flywheel N/A. Getting there from a factory engine rated at 300/300 Ithink wpuld be pretty hard. But the killer is the factory intake. Thats what I have been told by many people. Short runner makes hp but kills the tq. Where the factory long runner make gobbs of torque on the low end but kills everything up top. My 04 Navi dies at 4900.. for the cams I have and around 10.5:1 I know what my ideal runner length needs to be and getting it isnt going to be easy.