88Sleeper
05-04-2016, 02:27 PM
Hey Guys,
I tried searching the forum, and found a LOT of great info by A20A1, but I'm not really finding the answer to what I'm looking for.
Ok, so I have a 38.38 weber on my intake side, but I still have the stock exhaust manifold, then a replacement bosal down pipe, the stock cat, a replacement bosal resonator, back to a 2.25" inlet muffler. The pipes are all 1.75" diameter.
However, I feel that the engine would be able to rev higher if the stock exhaust was able to handle the more dense exhaust gases that the weber creates.
I was thinking I could make a "track exhaust" with a 2.25" down pipe and full-length system (straight-piping the cat) to my 2.25" muffler, for when I want to track the car. Otherwise, I could use my stock exhaust on the road for emissions purposes.
The problem, I see here is that I'm not sure if the stock exhaust manifold is an air-dam on the head?
From the down-pipe I have, I can see that the 4-1 manifold outlet is actually pretty big, at least 2" in diameter, and then the down-pipe narrows down to 1.75"
Would I be better off doing 2.25" for the entire exhaust, as an "exhaust-manifold" -back system; or should I just get a header and build an exhaust from there?
Thanks!
I tried searching the forum, and found a LOT of great info by A20A1, but I'm not really finding the answer to what I'm looking for.
Ok, so I have a 38.38 weber on my intake side, but I still have the stock exhaust manifold, then a replacement bosal down pipe, the stock cat, a replacement bosal resonator, back to a 2.25" inlet muffler. The pipes are all 1.75" diameter.
However, I feel that the engine would be able to rev higher if the stock exhaust was able to handle the more dense exhaust gases that the weber creates.
I was thinking I could make a "track exhaust" with a 2.25" down pipe and full-length system (straight-piping the cat) to my 2.25" muffler, for when I want to track the car. Otherwise, I could use my stock exhaust on the road for emissions purposes.
The problem, I see here is that I'm not sure if the stock exhaust manifold is an air-dam on the head?
From the down-pipe I have, I can see that the 4-1 manifold outlet is actually pretty big, at least 2" in diameter, and then the down-pipe narrows down to 1.75"
Would I be better off doing 2.25" for the entire exhaust, as an "exhaust-manifold" -back system; or should I just get a header and build an exhaust from there?
Thanks!