New Exhaust For 72 GMC Please help. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*hoser* · 03-15-2006, 08:40 AM

My 72 GMC 3/4 ton 4x4 350 auto trans truck needs a new exhaust, it has the factory ram manifolds and some sort of after market dual exhaust.

Any suggestions for a replacement at a reasonable cost.

I am not opposed to installing headers but really dont like a lot of noise, I was thinking a full exhaust including a new cross over pipe.

All suggestions welcome just keep it real , no $600.00 space age coated headers please.

Please include links if you can.

Thanks in advance

mrein3 · 03-15-2006, 09:38 AM

Simple.
LMC.
Everybody on this board likes to badmouth LMC but I've had good luck with using them.

They offer a COMPLETE dual exhaust system in their catalog. It has been a while but I think it is just under $200 for a complete kit at your door step. The kit is made by a company here in Minnesota and drop shipped to you through LMC.

I ordered it for my 4x4 more than 4 years ago. The "kit" contained ALMOST everything I needed. I did have to use universal exhaust hangers on the side that didn't have exhaust hangers. If you have a truck that was a factory dual exhaust truck you won't have to do that.

Since your truck is a 4x4 you can slide under there and do all the work on the ground with no problems.

As usual, I'll add:
I don't work for LMC. I'm just a satisfied customer.

johnnyp · 03-15-2006, 04:15 PM

The first exhaust I put on Maych I did it myself. It was a single exhaust system with cross over and standard muffler. The parts alone cost me $240.00 at a local parts store. And because I clamped it together rather than weld it leaked like a sieve.

When that exhaust blew up about a year later (long story) I had a new dual exhaust system put on at a local muffler shop and the total bill only came to $270.95.

Moral - check with a local muffler shop before you decide.

**pound41** · 03-15-2006, 04:56 PM

I have the LMC system on both my blazers one dumps out the back and one on the sides I have had the 1st on for 8yrs sounds good cannot touch them for the price

chevy_fatman · 03-15-2006, 11:52 PM

LMC's kit is a good cheap option, I checked a couple of years ago in a local muffler shop because I wanted to replace the dual exhaust in a longbed I got for $400 and they wanted $700 !!! and I still had to provide my own mufflers@! needless to say I drove that pos with a rusted out exhaust for a while

4x4Poet · 03-16-2006, 02:31 AM

Here's the link for the exhaust mfr in Minn that LMC sources:
http://www.heartthrobexhaustinc.com/

The mufflers that come with LMC's reasonably priced kits suck, IMO. Heartthrob sells direct, so one can purchase a dual exhaust system from Heartthrob for our trucks but leave out the mufflers. Then you can add your prefered mufflers to the excellent, mandrel-bent, aluminized pipes Heartthrob makes. I'm not sure of the price difference over LMC's kit with mufflers.

LMC also now sells Magnaflow SS dual exhaust kits for ~$500.

03-15-2006, 08:40 AM	#1
hoser Account Suspended Join Date: Nov 2005 Location: ILLINOIS Posts: 145	New Exhaust For 72 GMC Please help. My 72 GMC 3/4 ton 4x4 350 auto trans truck needs a new exhaust, it has the factory ram manifolds and some sort of after market dual exhaust. Any suggestions for a replacement at a reasonable cost. I am not opposed to installing headers but really dont like a lot of noise, I was thinking a full exhaust including a new cross over pipe. All suggestions welcome just keep it real , no $600.00 space age coated headers please. Please include links if you can. Thanks in advance

03-15-2006, 09:38 AM	#2
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,253	Re: New Exhaust For 72 GMC Please help. Simple. LMC. Everybody on this board likes to badmouth LMC but I've had good luck with using them. They offer a COMPLETE dual exhaust system in their catalog. It has been a while but I think it is just under $200 for a complete kit at your door step. The kit is made by a company here in Minnesota and drop shipped to you through LMC. I ordered it for my 4x4 more than 4 years ago. The "kit" contained ALMOST everything I needed. I did have to use universal exhaust hangers on the side that didn't have exhaust hangers. If you have a truck that was a factory dual exhaust truck you won't have to do that. Since your truck is a 4x4 you can slide under there and do all the work on the ground with no problems. As usual, I'll add: I don't work for LMC. I'm just a satisfied customer. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN

03-15-2006, 04:15 PM	#3
johnnyp Keepin' It Stock Join Date: Aug 2001 Location: Grand Island, Nebraska, USA Posts: 554	Re: New Exhaust For 72 GMC Please help. The first exhaust I put on Maych I did it myself. It was a single exhaust system with cross over and standard muffler. The parts alone cost me $240.00 at a local parts store. And because I clamped it together rather than weld it leaked like a sieve. When that exhaust blew up about a year later (long story) I had a new dual exhaust system put on at a local muffler shop and the total bill only came to $270.95. Moral - check with a local muffler shop before you decide. __________________ 72 Sierra Grande - Maych Forget about "do it right the first time". Do it wrong the first time to learn how, then do it right the second time.

03-15-2006, 04:56 PM	#4
pound41 Registered User Join Date: Dec 2002 Location: Northern Virginia Posts: 1,269	Re: New Exhaust For 72 GMC Please help. I have the LMC system on both my blazers one dumps out the back and one on the sides I have had the 1st on for 8yrs sounds good cannot touch them for the price

03-15-2006, 11:52 PM	#5
chevy_fatman Where's my beer? Join Date: Aug 2002 Location: I live in the state of denial.... Posts: 5,621	Re: New Exhaust For 72 GMC Please help. LMC's kit is a good cheap option, I checked a couple of years ago in a local muffler shop because I wanted to replace the dual exhaust in a longbed I got for $400 and they wanted $700 !!! and I still had to provide my own mufflers@! needless to say I drove that pos with a rusted out exhaust for a while __________________ Paul How do you make the invisible, visible?.........You take it away.

03-16-2006, 02:31 AM	#6
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	Re: New Exhaust For 72 GMC Please help. Here's the link for the exhaust mfr in Minn that LMC sources: http://www.heartthrobexhaustinc.com/ The mufflers that come with LMC's reasonably priced kits suck, IMO. Heartthrob sells direct, so one can purchase a dual exhaust system from Heartthrob for our trucks but leave out the mufflers. Then you can add your prefered mufflers to the excellent, mandrel-bent, aluminized pipes Heartthrob makes. I'm not sure of the price difference over LMC's kit with mufflers. LMC also now sells Magnaflow SS dual exhaust kits for ~$500. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.