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How do you convert a 1988 Caprice Classic from single exhaust to a 'true' dual exhaust?
Wiki User
∙ 8y ago
The only main problem you are going to have is there is no dual exhaust cross member available as far as I know, but a good custom pipe bender at a muffler shop can pancake the driverside pipe. Which means they square off the pipe where it won't hang below the crossmember's nonexistant hump. If you run dual after market converters it should pass emmissions.
If you want the look of duals, go to Big Al's muffler and break. They do cat-back (from the converter back) duals for $200. I don't think putting true duals on this car is worth the money as you need another converter not to mention the problems mentioned above.
Actually, you can get a dual humped cross-member out of an older model Caprice cop car, but they're hard to find.
No, that is not true. No 77-90 B-Body GMs had double hump crossmembers. Even the 9C1s had a single converter that split into two pipes.
One option is to take the cross member to a good welder and have him cut a section out, flip it over and re-weld it. Then use 1/4" angle iron to reinforce the cross member. Use it on both sides of the C M and extend the angle iron 6" in either direction from the out side edge of your modification.
Wiki User
∙ 8y ago
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How do you change the stock single exhaust to dual on a 1994 43L Caprice?
Use an exhaust made for an LT1 engine the blocks are identical it is the insides that is different. Will bolt right on.
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How exactly does dual exhaust help a 1995 Chevy Caprice?
I would guess it is a little help since it does relieve a little back pressure. Back in the old days when cars had true duel exhaust, the pipes ran straight back on each side. Now, the exhuast usually comes from a single pipe off the exhaust manifold, into the catalytic converter at which point it either splits and goes to separate mufflers and then out the back OR a single pipe back to one muffler which has two outlets for the duels. At best either is mainly for the effect and the sound. A few vehicles do have two cats and entire systems but not Chevy cars as far as I know (except vettes and some older trucks)................actually not true my caprice 94 9c1 5.7 350 and everybody elses do have true dual exhaust. only the 94, 95, and 96 caprice and impalas with 5.7 350's have this though!
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Exhaust Replacement?
form_title=Exhaust Replacement form_header=An Exhaust replacement will provide your vehicle with more power and performance gains in horsepower. What is the year, make and model of your vehicle?=_ Have you noticed any loud noises from under your car?= () Yes () No () Not Sure Has your vehicle recently failed emissions testing for an exhaust leak?= () Yes () No () Not Sure Does your vehicle have a single exhaust or dual exhaust? = {(),Single,Dual,Not Sure}
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As a rule exhaust is emitted on the opposite side of the fuel filler tube on single exhaust vehicles for safety reasons.
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