I understand that you are on a budget and you are doing this swap with what you already have.And what I have just read is that you can get NPI heads to flow near what stck PI heads so I don't know if it would be really worth it to get them ported.And the intake is only one thing in power.The heads themselves are where the real power is.Only time will tell what we can get out of a NPI ported head.
I'll try to find some numbers for you. But in the mean time here are some things to consider about the power gains that trickflow got using their heads
1 compression is raised with 38cc chambers
2 they used their own TFS intake instead of the stock or even PI intake.
3 TFS Cams were used...not sure which ones though.
Not to say that the heads aren't a great design over Ford factory heads
Buy for the price they're asking it just isn't worth it for me when I already have a set of NPI heads to test on.
Also along those lines...consider NPI vs PI setup. The PI setup puts out more power...with the help of a redesigned, better flowing intake manifold and different cams. It just makes me wonder how much of the power is really coming from the design of the head itself.
Just my thoughts. Any input is welcome.
meh, it's not bad. just dropped a dohc from a mark into my 04 v6. Engine/trans/longtubes all in one shot.Yeah I wouldn't even try that isht in a Mustang without a tubular k-member again! 2 of the primaries on the driver's side wrapped around the steering shaft, requiring the slip-fit horror that had me smelling like a weedwacker every time I exited the car. I suppose I could've had them welded.
Cool project. What trans you using....sorry if I missed it.
Just an auto trans from a 99 crown vic P71. It's getting built to handle the power though. There's quite a story where the engine and trans came from.
originally it was all from a 99 p71. My friend's 99 f150 had some head problems so we exchanged long blocks since i'm going to be replacing everything anyway.
So the block and heads are from a 99 f150 and the trans from a 99 P71
It's all apples to apples though
I have large hands and (now scarred) fingers. It was not fun for me. I'd just do a tubular K next time. Much lighter and easier to drop it or swap suspension components.meh, it's not bad. just dropped a dohc from a mark into my 04 v6. Engine/trans/longtubes all in one shot.
Is the 4.6 that much taller that it won't fit under the hood? I want to have a custom hood done eventually so if it doesn't fit I guess that will be the time to do it.
Or I could just run without a hood. (little joke there)
I should be well over 400 to the wheels with this build. I would love to See 450 N/A but only time will tell.
He must like the look of S H I T in the engine compartment.