Which muffler for a 402 Big Block? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

OregonC20 · 06-19-2009, 04:16 PM

I currently have a 1970 Chevy Truck with a 402 Big Block in need of mufflers.
I will be driving it once or twice week for work only. I' m sensitive to loud noises and on a budget. What do you guys recommend?

Thanks.

tim21391 · 06-19-2009, 06:55 PM

heres my truck its got a 402 big block with stock manifolds...

YouTube - 1972 Chevrolet C-10 Flowmaster 40...

tim21391 · 06-19-2009, 06:55 PM

its got flowmaster original 40s

mikajo39 · 06-19-2009, 07:02 PM

Hmm, could go with a pair of flowmaster 50's there more mellow than the 40's

Werewolf · 06-19-2009, 07:11 PM

Dynomax Super Turbo mufflers, hands down.

They're quiet (way quieter than a Flowmaster 40, or even Flowmaster's quieter 50 or 50 SUV - had both,) flow really well, and they're dirt cheap.

I have a set on my '92 Caprice. It has a high flow cat, so that dampens the sound some. Sounds low and mellow, but pretty good when you get on it.

I can't remember exactly what model number I got, but I think it was the 17749 muffler. Take a look at http://www.dynomax.com/ecat/pdfs/superturbo.pdf

Then you can surf Summit, Jegs, eBay, or whatever to get a good price on them.

I may have a video of the Caprice somewhere if you want a sound clip. I'll have to see what I can dig up.

mikajo39 · 06-19-2009, 07:18 PM

Quote:

Originally Posted by Werewolf

Dynomax Super Turbo mufflers, hands down.

They're quiet (way quieter than a Flowmaster 40, or even Flowmaster's quieter 50 or 50 SUV - had both,) flow really well, and they're dirt cheap.

I have a set on my '92 Caprice. It has a high flow cat, so that dampens the sound some. Sounds low and mellow, but pretty good when you get on it.

I can't remember exactly what model number I got, but I think it was the 17749 muffler. Take a look at http://www.dynomax.com/ecat/pdfs/superturbo.pdf

Then you can surf Summit, Jegs, eBay, or whatever to get a good price on them.

I may have a video of the Caprice somewhere if you want a sound clip. I'll have to see what I can dig up.

I was thinking Dynomax too but it slipped my mind for some reason. last i checked 46.95 or something like that for 1 seems pretty fair

06-19-2009, 04:16 PM	#1
OregonC20 Registered User Join Date: Oct 2006 Location: Salem, Oregon Posts: 250	Which muffler for a 402 Big Block? I currently have a 1970 Chevy Truck with a 402 Big Block in need of mufflers. I will be driving it once or twice week for work only. I' m sensitive to loud noises and on a budget. What do you guys recommend? Thanks.

06-19-2009, 06:55 PM	#3
tim21391 Registered User Join Date: Jul 2007 Location: Salina, Kansas Posts: 1,998	Re: Which muffler for a 402 Big Block? its got flowmaster original 40s __________________ 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

06-19-2009, 07:02 PM	#4
mikajo39 Gearhead and audio junkie Join Date: Aug 2008 Location: nunyah Posts: 452	Re: Which muffler for a 402 Big Block? Hmm, could go with a pair of flowmaster 50's there more mellow than the 40's

06-19-2009, 07:11 PM	#5
Werewolf Woof? Join Date: Jun 2005 Location: Raleigh, NC Posts: 276	Re: Which muffler for a 402 Big Block? Dynomax Super Turbo mufflers, hands down. They're quiet (way quieter than a Flowmaster 40, or even Flowmaster's quieter 50 or 50 SUV - had both,) flow really well, and they're dirt cheap. I have a set on my '92 Caprice. It has a high flow cat, so that dampens the sound some. Sounds low and mellow, but pretty good when you get on it. I can't remember exactly what model number I got, but I think it was the 17749 muffler. Take a look at http://www.dynomax.com/ecat/pdfs/superturbo.pdf Then you can surf Summit, Jegs, eBay, or whatever to get a good price on them. I may have a video of the Caprice somewhere if you want a sound clip. I'll have to see what I can dig up. __________________ 1968 LWB CST BB 2004 Avalanche Z71 LT3. 2003 S-10 ZR2 (hers). 1997 Astro 1992 Caprice wagon, 500k stock miles. Nursing wounds after a bad wreck. 1997 Saturn - need gas mileage from something! Last edited by Werewolf; 06-19-2009 at 07:11 PM.

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