91_2.5_2wd Posted March 4, 2010 Share Posted March 4, 2010 Headers on my comanche? is it worth it? hah it's a 4-banger. Replies? :huh???: Quote Link to comment Share on other sites More sharing options...
dasbulliwagen Posted March 4, 2010 Share Posted March 4, 2010 There are a few comapnies that make headers for the 2.5. I think that if you get a header you should also get a cam, and gut the cat conv., and install a high flow muffler. Upping the exhaust pipe diameter I don't think is necessary in this case, as the 4.0 used the same 2 1/4" exhaust. Add to all that a throttle body spacer, remove the engine fan and install an electric, and put in a cold air intake and youll be all set! Thats my plan for when I have to rebuild my engine... if ever! The cam will be the hardest thing to come across. Ive only found one place that lists them http://www.amotion.com but their website says they will be closed till .... just rechecked... says re open April 2011!!! sheeesh!! I guess Ill need to do some more research to find someone else... thier catalog isnt even up anymore! BASTARDS! I know clifford performance lists a header, and I recently saw a couple others, but can't remember who. They must really like them thought because they were expensive! Let us know what youre gonna do, and good luck! Is the 91 port injection or TBI???? If port injected you could get a 4.0 throttle body and a spacer, though theres specualtion on the use of a spacer with a port injection setup.... may or may not help performance. Quote Link to comment Share on other sites More sharing options...
64 Cheyenne Posted March 5, 2010 Share Posted March 5, 2010 Header by itself, no. Add a bunch of money for the rest of the upgrade parts, more power some. Swap in a stock 4.0 :banana: Quote Link to comment Share on other sites More sharing options...
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