Downpipes

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Furious65

Furious65

C-body Guy
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Curious who offers 2.25" downpipes to fit the stock manifolds on a '68 Barracuda with a 318? Everything I seem to find is for the 340 or is 2.5" pipe. Just point me in the right direction and I'll dig from there.
 
I'm not sure how large they offer or can go off of 318 manifolds, but on my 73 Duster, I purchased downpipes from Accurate LTD. The ones I bought are only 2" however. I hooked them up to a cheap 2 1/2" Jegs or Summit header-back exhaust kit and it worked out well.
 
Have a set made at a muffler shop, use a stiff rod and create the shape you need. Or take the car to them.
 
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69FBCuda said:
Have a set made at a muffler shop, use a stiff rod and create the shape you need. Of take the car to them.
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Eh, no way to get the car to a shop unless I have towed and that isn't cheap right now.
Murray said:
Check with Accurate Exhaust in Oregon.
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Thanks but they're way too expensive for just headpipes at $526 for the pipes and $138 for shipping. That's ridiculous.
 
Hoe long is this headpipe? A shorter pipe can handle a smaller ID to keep velocity and scavenging up even out of a log manifold. The longer smaller id runs ones will hurt performance. If your just mocking something up to get fabricated, use the flexible stuff you get in 12" -18" lengths at autozone and create the shape needed and take it to a muffler shop to fab it up. Easier than driving it there at 4 in the morning open manifold to avoid the cops for a noise complaint or possible burning an exhaust valve in the process.
 
pishta said:
Hoe long is this headpipe? A shorter pipe can handle a smaller ID to keep velocity and scavenging up even out of a log manifold. The longer smaller id runs ones will hurt performance. If your just mocking something up to get fabricated, use the flexible stuff you get in 12" -18" lengths at autozone and create the shape needed and take it to a muffler shop to fab it up. Easier than driving it there at 4 in the morning open manifold to avoid the cops for a noise complaint or possible burning an exhaust valve in the process.
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Dude, you're a Genius!
 
pishta said:
Hoe long is this headpipe? A shorter pipe can handle a smaller ID to keep velocity and scavenging up even out of a log manifold. The longer smaller id runs ones will hurt performance. If your just mocking something up to get fabricated, use the flexible stuff you get in 12" -18" lengths at autozone and create the shape needed and take it to a muffler shop to fab it up. Easier than driving it there at 4 in the morning open manifold to avoid the cops for a noise complaint or possible burning an exhaust valve in the process.
Click to expand...
Damn, why didn't I think of that? Thank you for a most excellent solution!
 
Furious, once you get the flex pipe done, fill it with expanding wall insulation foam from the can and it'll stiffen it up for safe travels.
 
We sent a set off to a shop to duplicate with their mandrel bender. They did a great job too.

89277E69-91F3-4F4E-881F-6982507CB0FA.jpeg
 
I built a set of mufflers too. I liked the color MIDAS mufflers used to be so I used copper stove pipe paint and painted them. These ultimately got flanges on them, both ends.

9228B740-1C87-43E0-BD2F-CFC2028BDE74_1_201_a.jpeg
 
I purchased TTI down pipes for my 70+ A body 340 manifolds to connect to a 2.5” mandrel bent kit I already had.
 
I purchased TTI downpipes and their H-Pipe system just about a month ago. Just waiting for it to come in.
 
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