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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: Jul 2013 Posts: 388 'Bolter | | 'Bolter Joined: Jul 2013 Posts: 388 | I swapped in my Chevy 292 into my '54 3100. I am running 12bolt's dual exhaust manifolds, which lead to a 2 1/4" head pipe. I'm no exhaust expert, and the local shops have been less than helpful.
This was my plan/though process.
Exhaust manifolds to 2 1/4 pipes, muffler just behind the cab. Then reducing down to 2" tailpipes.
I was looking at the Brockman steel/glasspacks, and running true dual exhaust out the back.
Is this a good plan? Should I keep 2 1/4 pipes for the tailpipe, should I reduce it to 2" (thinking that the exhaust gasses would be cooling down at this point so a smaller pipe would be sufficient). Help! | | | | | Joined: Feb 2000 Posts: 5,215 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,215 | The farther forward the mufflers are, the louder the exhaust will be. 2 1/4 down to 2 will work just fine, just remember, the engine used to run one single pipe. | | | | | Joined: Jan 2017 Posts: 308 'Bolter | | 'Bolter Joined: Jan 2017 Posts: 308 | I had dual exhaust coming straight out the rear on my 49 and 51, then I bought to spare tire carriers, and had to move the exhaust out behind the rear fenders. Don't make my mistake if you are going to install a spare tire carrier--Bill | | |
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