5.4l DOHC "B" series

[95crwnvic54]

I've been piecing together a 5.4l for sometime now and have finally decided to go DOHC and carb'd. This combo should be kick ass with the 5spd. Hopefully over 300 horses too.

Stock B series DOHC heads
stock MARK 8 cams
stock block
stock pistons & rings, compresion ratio 9.5/1
stock forged crank
aftermarket H beam rods
Holly 750 carb
Sullivan intake
stock exhaust logs

Every thing else STOCK!

I'm having alot of fun ....finally! I've been piecing this car together for some time now.

[p71towny]

I just wanna know how well it fits in the engine bay, thats the only reason Im holding off on a 5.4 swap

[88Vic]

That sounds like an interesting combo. Someday i'd like to swap a 5.4L DOHC into a new F150, but build it up first and possibly sticking a blower on it. That'd be possibly one of the best half ton pickups ever, strong frame and a beastly engine.

[interceptor1985]

he is going carbed on a new engine.... sorta New old school if you will.

[Grand Marquis GT]

I think it will rock and fuckin' roll!

300 hp is conservative, though!

[95crwnvic54]

I'm hoping for 300+ Horse and 350+ torque

Thanks for the good words guys!

[zwack88]

That is sweet! How do you time it??

[Nathan in MI]

That is sweet! How do you time it??

This thread talked about how you do a 5.4L carbed engine. Getting rid of the EFI in favor of a carb is silly if you ask me (other than making it simple), but what do I know?

http://www.grandmarq.net/vb/showthread.php?t=12591

[interceptor1985]

daja voo mangs

[JumboFriendly]

Not to rain on anyones parade, and I even understand the carb conversion, but why stock everything else? I don't understand why you'd go to the trouble of a project such as this and not bother to upgrade anything.

[Tiggie]

I predict 340hp @ flywheel.

[Southern_Pride]

Sounds like fun but that carb is too much. 650 would be much better.

[95crwnvic54]

Not to rain on anyones parade, and I even understand the carb conversion, but why stock everything else? I don't understand why you'd go to the trouble of a project such as this and not bother to upgrade anything.

Ford has done a good job with stock parts. Such as the crank I'm using is forged STOCK. The pistons are Hypo's.
And their are no aftermarket heads available.
As for the rods, the stock rods are junk and a big liability thats why they got replaced.

I'm shooting for a low budget modest build. Keep in mind that the factory DOHC Modulars can spin 6200 RPM stock.

[95crwnvic54]

I predict 340hp @ flywheel.

If that's all I get, she's going over a cliff!

I targeting 340 hp at the wheels! LOL

[Tiggie]

If that's all I get, she's going over a cliff!

I targeting 340 hp at the wheels! LOL

340 at the wheels mang? I dunno, but I have very little experience with the modulars.

The Mark was rated at, what, 280hp? About 1hp/cubic inch. I figured about 330hp on a 5.4L, I added 10hp for the intake (probably conservative).

I guess it depends on how restrictive the factory intake was and how the 4.6 heads like the added displacement of the 5.4L.

So lemme revise my math here... lets say you get 40 horsepower out of the intake and carb over the factory hardware and tune. And lets say the heads like the added displacement and net you 20hp. That brings you up to 390, assuming the 330hp I started with. Now deduct 15% for the drivetrain (5-speed goodness) and that brings you to 340hp @ the rear wheels. Maybe better, considering '03-'04 Cobras put down 360hp to the rears stock and were rated at 390hp @ flywheel.

So I guess I meant 340hp at the rear wheels .