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post #1 of (permalink) Old 09-08-2000, 10:37 AM
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Headers or manifolds?

My CJ7 (304 AMC) has a set of Hedman fenderwell headers. I really don't like how these things hang down. I'm thinking of changing them to Hedman in-frame headers. Anyone have them already? What do you think? Any other way of getting my pipes tucked up there?


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post #2 of (permalink) Old 09-08-2000, 10:43 AM
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Re: Headers or manifolds?

i had the out side the frame headers on my 351w at one time too and hated them for the same reason. is you wheel in the rocks theywon't last long. i got a set of manifolds for mine but shorty stye headers will worrk too. the headers will give you alittle more performance too but my manifolds were free so use them. one problem with the amc manifolds is they are realatively thin for manifolds and i have seen alot of crackes ones so if you go that route check them over real well before you put down any $$$.

brian wilson
80 cj5 "high 5"
stretched to 100" wb
post #3 of (permalink) Old 09-08-2000, 10:58 AM
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Re: Headers or manifolds?

I have them on my CJ5 360, inside the frame. The Heddmans fits nice, just miss the clutch linkage and plenty of room around the starter. I did tie the starter cable at an angle to miss the pipe. Definately better than some no name brand I used to have. I had to beat the crap out of it to clear the starter. Only problem with the Heddmans so far is the "high temp" factory paint pealed within the first 20 hours of operation.

After that there was plenty of room to run the dual pipes to the rear. O yeah if you don't want to stink of exhaust when you get to the rear turn the pipes out towards the sides. Mine are straight back and the exhaust will whirl around the rear and up into the tub. STINKS!!!!

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post #4 of (permalink) Old 09-08-2000, 12:52 PM
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Re: Headers or manifolds?

My CJ had fenderwell headers of unknown manufacture when I got it. I hated them for many reasons. A few months ago I got some used manifolds and built a single exhaust system using 2" pipes from the manifold, Y'd together into a cheap 2 1/2" in/out muffler buried way up next to the rear driveshaft. The new setup is less vulnerable, quieter, and much easier to work with. Surprisingly, it performs at least as well as with the headers. I have found no down side at all to losing those headers.


post #5 of (permalink) Old 09-08-2000, 06:08 PM
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Re: Headers or manifolds?

I've just installed heddman HTC coated headers on my 360 equipped '86 CJ7. Unlike Pigpen, my clutch linkage did require minor mods to accomodate the headers. I've got a T5 in there for as long at it lasts and from his bio, he has a T18A. I've got cherry bombs hooked up to 'em until I can custom fabricate a full dual exhaust.

post #6 of (permalink) Old 09-08-2000, 08:00 PM
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Re: Headers or manifolds?

i am using manifolds also.. but as i was welding up a crack in one.. i noticed that when it was good and hot.. the crack went almost all the way around it... you cant see it with the naked eye.. so its off to the boneyard i go.. to find a passenger side manifold..

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