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View Full Version : Anybody upgraded the exhaust for their 327?


44BZ
04-01-2012, 11:59 PM
I need to run new exhaust in my truck and I'm looking at one of the do-it-yourself kits from Summit. I want to run duals to a 2 in/2 out single muffler (thinking this would save on space). I'm wondering whether to go with 2.25 or 2.5? I should think that 2.25 duals would be fine for the low revving 327, but 2.5 might wake it up a bit. I'll be running a Rambler 4barrel intake and Holley TA470. Any thoughts?:drivin:

fulsizjeep
04-02-2012, 12:14 AM
I recommend finding a Rambler left hand exhaust manifold to get rid of the front crossover pipe. Jeep used the right side manifold on the left to avoid a tight spot around the clutch linkage. Even 2" pipes will wake the 327 up compared to the stock exhaust design.

44BZ
04-02-2012, 08:05 AM
I recommend finding a Rambler left hand exhaust manifold to get rid of the front crossover pipe. Jeep used the right side manifold on the left to avoid a tight spot around the clutch linkage. Even 2" pipes will wake the 327 up compared to the stock exhaust design.

I've wanted to get my hands on a Rambler manifold for the same reason. Haven't found one yet. I mentioned this in another thread a long time ago and was warned that it likely would not clear the clutch linkage. I'm still lookin for a manifold I can try out though. Thanks for the input:thumbsup:

hummer010
04-02-2012, 09:20 AM
I've got the Rambler manifold, but I haven't got to the exhaust stage of things. It definitely looks tight though. It should be do-able.

44BZ
04-02-2012, 09:24 AM
I've got the Rambler manifold, but I haven't got to the exhaust stage of things. It definitely looks tight though. It should be do-able.

Are you planning to run the Rambler manifold? I jumped on ebay this morning found only one listed with a buy now price $70+, which seems high for a "might work" scenario in my case. I'd like to make the switch, I think I would be much happier with it than running the pipe in front of the motor again.:)

Gambler68
04-02-2012, 10:05 AM
Interested in what you find out. I'd love to run twin straight pipes out the rear of the engine :D Maybe toss in some sorta muffler, loud pipes DO get annoying, trust me.

44BZ
04-02-2012, 10:11 AM
Interested in what you find out. I'd love to run twin straight pipes out the rear of the engine :D Maybe toss in some sorta muffler, loud pipes DO get annoying, trust me.

My exhaust was full of holes and ran thru dual cherry bombs; rendered in-cab conversation or a stero pretty much useless:rolleyes: I will definitely jump on a Rambler manifold if one pops up that I can afford. I have a little time to look as the motor still has to go in...

FSJunkie
04-02-2012, 05:16 PM
The exhaust manifolds only have a 2" outlet, so no matter what exhaust you oput on it, the manifold will probably be the restriction.

I see no reason for anything more than 2" pipe for duals. My 327 has 2.5" duals and it's overkill.

I wouldn't recommend a crossover pipe, the one in the intake manifold will suffice and you need some exhaust traveling through the intake to operate your choke.

Ristow
04-02-2012, 05:30 PM
I wouldn't recommend a crossover pipe, the one in the intake manifold will suffice and you need some exhaust traveling through the intake to operate your choke.

:eek:

:lol:

hummer010
04-03-2012, 10:41 AM
Are you planning to run the Rambler manifold? I jumped on ebay this morning found only one listed with a buy now price $70+, which seems high for a "might work" scenario in my case. I'd like to make the switch, I think I would be much happier with it than running the pipe in front of the motor again.:)

I am planning to. I've had it on the truck, but with no exhaust behind it. I've kind of eyeballed the route, and I think it should be do-able.

I'll tell you what, it's very, very loud with just the manifolds. :D

44BZ
04-03-2012, 02:25 PM
Well, i made an offer of $25 on the manifold I found on ebay and it was accepted:eek: Never hurts to ask I guess. I'm excited to try this out:thumbsup: