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Old 03-10-2013, 08:31 PM   #1
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Question Chevy V8 swap exhaust

Hi all, I am swapping in a 350 carbed engin into my tj and was wondering if anybody has a good solution for manifolds or headers, other than the high dollar conversion headers. I am using Advance Adapters mounts. has anyone tried the mid length truck or Camaro headers????

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Old 03-10-2013, 11:01 PM   #2
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I'd be interested in a response too. I want to do this swap someday

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Old 04-03-2013, 08:43 PM   #3
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Smile 350 swap

Well ordered the headers and the 4cyl is coming out Saturday. new ball joints and then in with the HORSE POWER.
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Old 04-03-2013, 09:07 PM   #4
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Well ordered the headers and the 4cyl is coming out Saturday. new ball joints and then in with the HORSE POWER.
Whats been done to the motor??? What 350 is it?
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Old 05-06-2013, 09:14 PM   #5
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kris its a carbed 350 out of a 70 corvette (actually was a warranty replacement for my vet) totally stock inners just has alum intake,headers, Edlebrock carb HEI gm ignition, headers, and some pretty stuff on it.
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Old 05-06-2013, 09:15 PM   #6
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actually got it running, just have to patch tunnel mod and needing a clutch master cylinder, then to the exhaust shop.
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Old 05-06-2013, 09:23 PM   #7
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kris its a carbed 350 out of a 70 corvette (actually was a warranty replacement for my vet) totally stock inners just has alum intake,headers, Edlebrock carb HEI gm ignition, headers, and some pretty stuff on it.
Nice, so its still a fairly high compression motor, probably 9.5 to 1. Probably a forged crank and GM pink rods.
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Old 05-06-2013, 09:25 PM   #8
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actually got it running, just have to patch tunnel mod and needing a clutch master cylinder, then to the exhaust shop.
If yer gonna be doing any crawling i would suggest upgrading the carb to a new bolt on EFI unit.
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Old 07-31-2014, 12:38 PM   #9
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So.....any ideas on this? I have a build in progress also, will be putting in a 305 or a 350 Chevy, probably headers, and am wondering what to do with exhaust. It doesn't have to be excessively loud or anything, but I don't want it so restrictive that it robs power. (Although, admittedly, it will probably have way more power than it actually needs.....) And of course it would be nice if it sounded like a V8.
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Old 07-31-2014, 01:50 PM   #10
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Look into van manifolds from a V-8 Chevy van.
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Old 07-31-2014, 07:48 PM   #11
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So.....any ideas on this? I have a build in progress also, will be putting in a 305 or a 350 Chevy, probably headers, and am wondering what to do with exhaust. It doesn't have to be excessively loud or anything, but I don't want it so restrictive that it robs power. (Although, admittedly, it will probably have way more power than it actually needs.....) And of course it would be nice if it sounded like a V8.
Dont bother with manifolds. Get a set of shorty headers from hooker. Also if your gonna put in a small block dont waste your time with a 305. Takes just as much to put in a 350 as it does a 305.
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Old 07-31-2014, 07:58 PM   #12
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Dont bother with manifolds. Get a set of shorty headers from hooker. Also if your gonna put in a small block dont waste your time with a 305. Takes just as much to put in a 350 as it does a 305.
How much is left on the table with manifolds vs shorties?
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Old 07-31-2014, 08:06 PM   #13
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How much is left on the table with manifolds vs shorties?
Idk. Headers probly $200
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Old 07-31-2014, 08:12 PM   #14
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Idk. Headers probly $200
Was thinking hp and/or torque left on table.
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Old 07-31-2014, 09:00 PM   #15
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Was thinking hp and/or torque left on table.
Always gonna have more with headers. Probly an easy 15 -20 hp id say.
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Old 08-01-2014, 10:28 PM   #16
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Always gonna have more with headers. Probly an easy 15 -20 hp id say.
Sounds reasonable for an older carbed 350. I've read that the newer 1999+ engines don't respond as well to shorties because the manifold is better, the vette manifold in particular. The non-vette manifolds are leaving about 5-10 tops. I'll put some links up when I get away from this phone.

I have manifolds on l92 heads and ls7 block btw. I've been puzzeled as to why a credit card (not mine) build at a very good builder went manifold instead of headers. Was mentioned by PO (RIP) that low end torque was a goal.
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Old 08-02-2014, 12:30 AM   #17
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Sounds reasonable for an older carbed 350. I've read that the newer 1999+ engines don't respond as well to shorties because the manifold is better, the vette manifold in particular. The non-vette manifolds are leaving about 5-10 tops. I'll put some links up when I get away from this phone. I have manifolds on l92 heads and ls7 block btw. I've been puzzeled as to why a credit card (not mine) build at a very good builder went manifold instead of headers. Was mentioned by PO (RIP) that low end torque was a goal.
They are more along the lines of headers. Tubular manifolds like on our Tj's. Cast iron manifolds are a thing of the past. There are alot of myths about torque Vs hp. Ive seen single plane intakes produce more torque than dual planes.

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