Re: RE: Headers

From: M.B. (
Date: Sun Jun 19 2011 - 00:29:41 EDT

92-93 only had the larger exhaust manifold and 3" y-pipe to a larger 3"
cat before necking down to 2.5" after the cat as I recall.

94 they went to a smaller exhaust manifold, I'm guessing for less
thermal mass to help the cat light off faster for cold start emissions.
Went to a different cam profile as well and tuned for more 10ft/lb more
low end torque but lost 5hp in the process.

The y-pipe for the 94-96 won't bolt up to the 92-93 exhaust manifolds

On 6/18/2011 7:37 PM, Jamie C wrote:
> I thought the larger manifolds were from an earlier year then 95. Didn't
> they have a certain casting number on them?
> On Jun 18, 2011 8:01 PM, "Brian Cropp"<> wrote:

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