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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jan 2015 Posts: 208 Shop Shark | | Shop Shark Joined: Jan 2015 Posts: 208 | I am looking for advice on the exhaust system on my 49 3800 flatbed. I am running a 283 and SM465 manual transmission. I am starting from scratch. I have 66 283 Chevelle manifolds. What size pipe would you recommend. Would it be pretty much a straight shot to the back being its a flat bed? | | | | | Joined: Oct 2016 Posts: 916 'Bolter | | 'Bolter Joined: Oct 2016 Posts: 916 | [Edit] I just saw your pics on PB- I thought the 3600 and the 3800 shared the same frame- obviously not! What a beast!
Last edited by Norcal Dave; 04/18/2017 5:51 PM.
~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission
| | | | | Joined: Feb 2004 Posts: 29,869 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,869 | 283's have fairly low exhaust volume, particularly with dual pipes. They also have very low torque. A 1 3/4" or 1 7/8" pipe should be plenty of diameter. 2" or bigger pipes will tend to reduce the low-end torque of the engine due to low exhaust gas velocity.
I'd recommend 1 7/8" pipes with moderately free-flowing mufflers- - - -no point in deafening yourself with a set of Cherry Bombs or something similar.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Jan 2015 Posts: 208 Shop Shark | | Shop Shark Joined: Jan 2015 Posts: 208 | Yeah, I would like to keep what I have left of my hearing. I would however like it to have a nice Mellow sound. Thanks Jerry | | | | | Joined: Jan 2015 Posts: 208 Shop Shark | | Shop Shark Joined: Jan 2015 Posts: 208 | Slight differences I think but Yes she is quite the beast.
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