4.6 long tubes
05-24-2010, 07:32 PM
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4.6 long tubes
Hey guys I'm a fairly new member here and was wondering if someone could help me out. I have made several phone calls and sent alot of emails trying to find long tube headers for my 2002 4.6 4wd. So now I was curious if anyone has used 5.4 headers on their 4.6 and what kind of modificatons were needed to do it. I have the truck apart now cause i needed to do head gaskets and I'd like it for the weekend but i don't wanna reuse the shortys. I really long tubes in the worst way. Sorry to be so long winded but any help or advice would be greatly appreicated!!
05-24-2010, 08:14 PM
#2
crush a little car today
The 5.4 block is taller than the 4.6. This puts the hearer surface up and out further. I know the down pipes are different due to their location relative to the manifolds. U might run into problems with the steering.
05-24-2010, 08:47 PM
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I know the deck height is higher on the 5.4 and i know i won't run into steering issues. I am worried about to headers hitting the frame, starter and front driveshaft. I already have the cats and stuff to do the job but the headers i ordered from pacesetter for the earlier 4.6's don't seem to exsist anywhere.
05-24-2010, 09:11 PM
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I think I'm gonna get the pacesetter part number 70-2227 and see if they will fit, I know of guys using them on 4.6's. I see summit is the only place that may have these headers also. When I did the head gaskets I put a set of comps cams in and polished the heads so I want to get as much as possible out of the small motor.
05-24-2010, 10:04 PM
#6
I think I'm gonna get the pacesetter part number 70-2227 and see if they will fit, I know of guys using them on 4.6's. I see summit is the only place that may have these headers also. When I did the head gaskets I put a set of comps cams in and polished the heads so I want to get as much as possible out of the small motor.
05-25-2010, 01:24 AM
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Sure thing I'll let you all know. I just ordered them so i hope it all goes good I've read that some people they fit and some say they didn't but I'm not against minor mods if their going to work. A tech guy at jegs said that pacesetter is in the process of designing headers for these trucks but its going to take several months to know.
