Ok so im about to buy some headers for my truck...but for some reason on all the ones i look at say there for 2wd trucks....does this make a differnce if im buying them to put on a 4wd truck??? what would be different???

 

im guessing no, but i could be wrong

 

I have JBA headers on my 03 4x4 4.0L and they fit - barely. The clearance between the oil filter adapter and the PS header is very tight. Some people have reported serious interference there but mine weren't that bad. I ground a small bevel on the collector flange to increase the clearance.



Be forewarned - these are quality headers but they are rather expensive and require 1~2 days to install them. If you want performance, a tuner from BamaChips will get you more for less money and a lot less hassle. If you want sound, a performance muffler will give you much more than these headers.

 

well i have a magnaflow on my truck now and i just thought with putting headers onmy truck will alow more air flow and give me some more noise....and im getting hooked up with the headers dirt cheap but thats why i want to find out if i should even bother on getting them...

 

Headers are part of a total performance package for those interested. If you have the hook up I would get them.

 

It feels like the JBAs give you a bit more power at the top end of the RPM band. IMO, the small difference is not because the JBAs are a bad design, it's more that the stock manifolds on the 4.0L are pretty good.

If you like noise, you need something other than a Magnaflow. It is not a loud muffler and adding the JBAs wouldn't change it much.

 

Yeah, the stock manifolds flow amazingly well. I really need to get a set to match the heads and cams that I have right now but I have been too busy getting "look" modifications done so they just haven't been in the budget. But with that rebirth of my nitrous system I think that I am gonna need to get some soon.