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Durango/Dak Exhaust Manifold On A Duster


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10 replies to this topic

#1 DUSTRBD

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Posted June 9, 2006 at 04:13 pm

I have seen a little bit of info. on putting 1999-2002 Durango/Dakota V8 exhaust manifolds on A-bodies, but they all seem to be early model A-bodies. Has anyone put any on a 72-73-74 Duster? My car has power steering and I am wondering about the clearances there, and also at the firewall area on the passenger side where the exhaust dump is. Other than that, from the pics I have seen of the manifolds the look like they would fit.

I have a pretty good source for the exhaust mainfolds, so I was wondering.

-DUSTRBD

#2 thrashard340

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Posted June 9, 2006 at 04:33 pm

Check out this thread
http://www.allpar.co...showtopic=78165

then again...check this one out
http://www.geocities...st/durango.html

Forgot to mention this website...its pretty useful for A-Bodies

http://www.forabodiesonly.com/

#3 dartley

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Posted June 12, 2006 at 09:48 am

About the Links - thanks for posting them. Personally, I surmise that if headers are a pain for 15 HP, then these are even more of a pain for what - 5 HP. I don't see any real viable options other than stock cast iron or TTIs of you car is a street machine. Don't forget, these cars are fast becoming more valuable now that the B and E bodies are out of sight. What seemed expensive a couple of years ago for a Duster is now not so much. For a race car, cheaper headers are probably the way to go. My 2 cents.

#4 Bearhawke

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Posted June 12, 2006 at 02:30 pm

About the Links - thanks for posting them. Personally, I surmise that if headers are a pain for 15 HP, then these are even more of a pain for what - 5 HP. I don't see any real viable options other than stock cast iron or TTIs of you car is a street machine. Don't forget, these cars are fast becoming more valuable now that the B and E bodies are out of sight. What seemed expensive a couple of years ago for a Duster is now not so much. For a race car, cheaper headers are probably the way to go. My 2 cents.


Our 'cavemanmoron' (Lee) has commented on the doubtfulness of headers as well on a street vehicle with a full muffled exhaust.

Yet; running a dual exhaust system with at least 2 1/4" pipes or a single setup of about 3" in diameter does help significantly..........again on a fully muffled street driver.:)

#5 cavemanmoron

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Posted June 12, 2006 at 02:51 pm

My opinion,
If your going to street drive the car,
and the engine realistically, has 350 hp or less,
I suggest use the stock manifolds,with Dual exhaust, and the mufflers you prefer.


I have added dual exhaust to 318 equipped Mopars since 1977,
and normally used "Turbo" mufflers.

I can say the dual exhaust ;Will help the engine to breath, much better.

I put a 340 together,with a hotter than stock cam,
and put the engine into a 73,or 74 Duster, about 10 years ago.

I reused the stock 318 exhaust manifolds, with the local Midas putting
a nice dual exhaust on the car for me.

It started at the stock size of the manifold, and went to 2 1/4",
and then thru Turbo mufflers, and out the rear.

The car would light the tires up at will, and I had 235/60/r14 Comp TA's that wore out
in about 4,000 miles. I think headers may have been worth 10 hp or so.

My current toy, is setup a bout the same, but with the 318 engine.

Duals off the stock manifolds, necked up to 2 1/4",
using Dynomax Super Turbo mufflers.

My Girlfriend said I had made the car too noisy,
so I added some sound deadner under the rear seat, some of the rug, package tray etc,
and that helped Very much. I strongly suggest this to quiet the car down, inside.

Posted Image


Our 'cavemanmoron' (Lee) has commented on the doubtfulness of headers as well on a street vehicle with a full muffled exhaust.

Yet; running a dual exhaust system with at least 2 1/4" pipes or a single setup of about 3" in diameter does help significantly..........again on a fully muffled street driver.:)


Posted Image

#6 DUSTRBD

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Posted June 12, 2006 at 03:43 pm

thanks for the responses and the links, I have read those, and they didnt really answer my intitial question, except for maybe Bearhawke. Do they fit a later model A-body duster. I know they will fit the early bodied ones with some work, unless I missed something, I didnt see anything about the later bodies except for that they may not clear the firewall. I for one dont want headers on this car. I dont need the headache.


-DUSTRBD

#7 Hersbird

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Posted June 12, 2006 at 10:01 pm

The "magnum" style exhaust manifolds are probably the best cast manifolds made for the LA. I remember when I bought my 93 5.2 Dakota new and had to wait 2 years before any header company could come up with something that significantly added power, they were the Doug Thorley tri-Y's. Still I really believe that headers will add good power over the cast manifolds. You do have to have to add everything as a system as some parts really don't help much alone. That said if you add a bigger cam, a better intake, and skip the headers you will really be limited on the gains from the other two. Also adding just headers to a stock cam, 2 barrel 318 isn't going to gain much either. The rest of the exhaust can be a good stand alone gain. My 318 Barracuda is currently running through what looks like a single 2 or 2 1/4" inch pipe that is dented some on top of that! It snaps off the line really hard for a stock motor but quickly runs out of breath. It even rumbles a bit at idle through the super turbo muffler but as soon as it revs a bit it gets really quite with all the restriction. I need some new pipes bad!

As to the question to if the newer manifolds fit a Duster I'd have to think so. They certainly are much more compact then headers and a Duster looks to have the same or better room in the finderwells then the older A-bodies.

#8 96neon

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Posted June 16, 2006 at 12:48 pm

I ran a set of 92 Dodge truck "Magnum" manifolds on my 73 Scamp for several years, the passenger side one is no problem. the drivers side manifold will not clear a power steering box, so you need to put in a manual box for it to fit, there will be a slight interference with the steering coupler, so you may have to grind a small notch out of the manifold with a grinder,don't get too caried away, only 3/16 or so. this is a good swap, good flow & quiet. However I put on a set of headers later on, and made a very noticable increase in power over the manifolds. my engine is pretty modified, so a near stock engine might not notice as large a gain with the headers, hope this helps.

#9 DUSTRBD

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Posted June 19, 2006 at 02:55 pm

THAT! is the info I was looking for.....Thanks!
My engine is probably close to yours maybe a little less.
I just really dont want to deal with headers at this point. the car is/will be more show than go.
But the info. is what I was looking for.

-DUSTRBD

#10 Dakota5.2

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Posted June 20, 2006 at 02:36 pm

96 Neon ... how hard was it get to the spark plugs with the 92 ... 93 manifolds vs headers

#11 96neon

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Posted June 21, 2006 at 01:14 pm

the two most rearward on the drivers side were quite a bit easier, the rest about the same as headers.


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