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Unread 02-10-2012, 05:31 PM   #1
inovermyhead2
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1983 CJ7 
 
Join Date: Dec 2011
Location: Holbrook, Long Island, New York
Posts: 518
Cj7 small block chevy exhaust

Does anyone know of a simple solution to put an exhaust system on a 83 CJ7 with a small block chevy conversion? I did away with the fenderwell headers and side pipes. I hate the way they look and you might as well stick a garden hose in the tailpipe and suck on the other end. I installed stainless block hugger headers and I have plenty of clearance around the collectors for my pipes. Will any factory type exhaust parts work in conjunction with some custom fab? My main concern is the first set of pipes coming off the header collectors. The rest is easy to fab up from there. I am open to a single 2 into 1 y pipe or dual exhaust, she's not going to be a hot rod.

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Unread 02-10-2012, 05:38 PM   #2
SleeperCJ
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1983 CJ7 
 
Join Date: Jun 2011
Location: Pleasanton, Ca
Posts: 222
I ran 2" pipes from the manifold to a 2-1/2" Y pipe with a single magnaflow in the factory location. The pipe from the driver side wraps around in front of the oil pan and around under the driver side pipe to the Y just in front of and over the skid plate. I have some pics on my computer but not my phone. I have an 83 with a sbc. Wasn't enough room on the passenger side to run duals and I really didn't want to either. I bought the muffler and took it a shop. Charged me $300.
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Unread 02-10-2012, 05:50 PM   #3
inovermyhead2
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1983 CJ7 
 
Join Date: Dec 2011
Location: Holbrook, Long Island, New York
Posts: 518
That sounds exactly like what I have in my head. I was hoping to be able to modify some stock exhaust components but that sounds like a reasonable price to just let someone else worry about it. I really want it to sound very quiet and my plan is to use an oem type muffler and a single 2 1/2" exhaust in the stock location including the tailpipe. Thanks for the heads up. Unless anyone has some successful experience with some factory jeep components, that will be the route I go.
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Unread 02-13-2012, 09:21 AM   #4
1986cj
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1986 CJ7 
 
Join Date: Dec 2007
Location: Denver Colorado
Posts: 1,875
I have saved this as I think it was a real simple and clean idea. Not real sure who's Jeep it was.
sbc_exhaust_under_oil_pan.jpg  
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Unread 02-13-2012, 12:31 PM   #5
cdmiller2
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1981 CJ5 
 
Join Date: Apr 2011
Location: madison, wi
Posts: 256
My block huggers did not clear the driveshaft on mine, I have Heddman elite shortys for a yj, I took it to an exhaust shop and had them run 2.5 in pipes to flowmaster 40 series dumped in front of the rear axle.
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Unread 02-13-2012, 01:05 PM   #6
inovermyhead2
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1983 CJ7 
 
Join Date: Dec 2011
Location: Holbrook, Long Island, New York
Posts: 518
That picture is exactly what I'm looking to do. Thanks 1986Cj!! cdmiller2- I don't have any driveshaft clearance issues but my collector is very close to the back of my starter motor. Just to be safe I may install a high torque mini starter for added clearance from the heat or use a heat shield. Thanks for the reply guys
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Unread 02-13-2012, 10:39 PM   #7
1986cj
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1986 CJ7 
 
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Location: Denver Colorado
Posts: 1,875
From the pic they look like stock center dumps. I was thinking about a 4.3 in my CJ at one time.
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