Exhaust Recommendations? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Mike Quillici · 10-20-2009, 11:45 PM

I need to have the exhaust redone on my 1972 350 long bed. Any recommendations? Ideally, I'd like to be able to hear the engine, and not the exhaust (or at least not too much).

unclewatts · 10-21-2009, 01:26 AM

Probably would be a good idea to stay away from headers, big diameter exhaust pipes and some of the less restrictive mufflers like Flowmaster 40 series.

*2tons of fun* · 10-21-2009, 01:50 AM

the headers wont change much, the pipe sizes and muffler type will deffinately make or break it.

keep the pipes at 2.5-2.25"

and run a high series flowmaster 70/80/90 or delta flow. they are more expensive but will have a deep muffled rumble.

if not just get some stock type fiberglass packed generic's.

Tx Firefighter · 10-21-2009, 06:43 AM

Dynomax Super Turbo mufflers are real mild sounding. Cheap too.

mrein3 · 10-21-2009, 07:35 AM

I've recommended the LMC exhaust kit a million times and will again here. For $200 and an afternoon of labor you're done.

The "LMC Kit" is actually manufactured by http://www.heartthrobexhaustinc.com/ and dropped shipped to your door.

Installation on my 4x4 was a breeze. I've never used the 2wd kit.

tim21391 · 10-21-2009, 10:55 AM

i had dynomax on my truck before i put my flowmaster 40s on and it was a quiet ride. then when hit it. you could hear the exhaust. but at idle it has a nice quiet rumble

FRENCHBLUE72 · 10-21-2009, 02:41 PM

Magnaflows sound nice also..

Mike Quillici · 10-21-2009, 06:35 PM

What effect does the diameter of the pipe typically have on performance??

Tx Firefighter · 10-21-2009, 06:45 PM

Larger pipes kill more low end torque.

I find smaller pipes like 2 inch or 2.25 inch real good for street driving where almost all usage is under 3500 rpm.

You get benefits on a bit better mileage and bottom end pull. At higher revs, it may cost you a bit of horsepower, but you'll really never notice it. Torque is what you feel.

10-20-2009, 11:45 PM	#1
Mike Quillici Registered User Join Date: Oct 2009 Location: Sacramento, CA Posts: 161	Exhaust Recommendations? I need to have the exhaust redone on my 1972 350 long bed. Any recommendations? Ideally, I'd like to be able to hear the engine, and not the exhaust (or at least not too much). __________________ 1972 Chevy C-10 ~ 188,000 miles give or take

10-21-2009, 01:26 AM	#2
unclewatts 70 Chevrolet=Obsession Join Date: Jun 2009 Location: nice ca Posts: 1,067	Re: Exhaust Recommendations? Probably would be a good idea to stay away from headers, big diameter exhaust pipes and some of the less restrictive mufflers like Flowmaster 40 series. __________________ I'm Just like my truck. Old, Ugly and Grouchy. Except my truck starts easily in the morning and doesn't smoke! IT'S NOT EASY BEING GREEN! -Kermit the frog 1970 Chevrolet C-10 Longbed Stepside : 350, Muncie M20, 3.08 GM corp. positraction Forest green exterior/light green interior(Where all my money goes) 1996 Toyota Corolla (Parts runner)

10-21-2009, 01:50 AM	#3
2tons of fun Account Suspended Join Date: Jan 2009 Location: galt ca, Posts: 749	Re: Exhaust Recommendations? the headers wont change much, the pipe sizes and muffler type will deffinately make or break it. keep the pipes at 2.5-2.25" and run a high series flowmaster 70/80/90 or delta flow. they are more expensive but will have a deep muffled rumble. if not just get some stock type fiberglass packed generic's.

10-21-2009, 06:43 AM	#4
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Exhaust Recommendations? Dynomax Super Turbo mufflers are real mild sounding. Cheap too. __________________ I'm on the Instagram- @Gearhead_Kevin

10-21-2009, 07:35 AM	#5
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,254	Re: Exhaust Recommendations? I've recommended the LMC exhaust kit a million times and will again here. For $200 and an afternoon of labor you're done. The "LMC Kit" is actually manufactured by http://www.heartthrobexhaustinc.com/ and dropped shipped to your door. Installation on my 4x4 was a breeze. I've never used the 2wd kit. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN

10-21-2009, 10:55 AM	#6
tim21391 Registered User Join Date: Jul 2007 Location: Salina, Kansas Posts: 1,998	Re: Exhaust Recommendations? i had dynomax on my truck before i put my flowmaster 40s on and it was a quiet ride. then when hit it. you could hear the exhaust. but at idle it has a nice quiet rumble __________________ 1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796

10-21-2009, 02:41 PM	#7
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	Re: Exhaust Recommendations? Magnaflows sound nice also.. __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

10-21-2009, 06:35 PM	#8
Mike Quillici Registered User Join Date: Oct 2009 Location: Sacramento, CA Posts: 161	Re: Exhaust Recommendations? What effect does the diameter of the pipe typically have on performance?? __________________ 1972 Chevy C-10 ~ 188,000 miles give or take

10-21-2009, 06:45 PM	#9
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Exhaust Recommendations? Larger pipes kill more low end torque. I find smaller pipes like 2 inch or 2.25 inch real good for street driving where almost all usage is under 3500 rpm. You get benefits on a bit better mileage and bottom end pull. At higher revs, it may cost you a bit of horsepower, but you'll really never notice it. Torque is what you feel. __________________ I'm on the Instagram- @Gearhead_Kevin



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