[C2] Side Pipes
Race Director
Joined: Jan 2003
Posts: 17,693
Likes: 3,683
From: Central Arkansas
I’m not sure how 2-1/2” core sidepipes that so many of us now run, could be any more restrictive than the longer, under-car pipes with reverse flow mufflers and 2” outlets. Comparing 2-1/2” core pipes (oe especially 3”) to the original GM sidepipes is pretty much an apples to oranges comparison. But they are loud.
Burning Brakes
Joined: Feb 2000
Posts: 852
Likes: 112
From: Torrance California
Le Mans Master
Joined: Mar 2010
Posts: 6,501
Likes: 1,938
From: The Golden Triangle, Florida
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
St. Jude Donor '20 thru '25
I wrapped my side pipes with header wrap but it changed the sound of the pipes. It gave them a tinny and rasping note. So I removed the wrap.
I’m in Florida and it does get hot but my car has a/c so heat from the pipes isn’t a big problem.
Take care,
Steve
I’m in Florida and it does get hot but my car has a/c so heat from the pipes isn’t a big problem.
Take care,
Steve
Safety Car
Joined: Apr 2000
Posts: 3,802
Likes: 61
From: Wichita KS
Heat
From a purely aesthetic perspective, no question that side pipes look amazing, but do the negatives associated with "HEAT" outweigh the positive? Has technology not advanced far enough where we can get "insulated" side pipes? 
- MGTunon, Future C2 Owner (I'm already ready already!)
- MGTunon, Future C2 Owner (I'm already ready already!)
I have all the factory insulation, which is fiberglass between the covers and the exhaust pipe.
cc
Le Mans Master
Joined: Apr 2002
Posts: 5,537
Likes: 280
From: Egg Harbor Township NJ
2015 C2 of Year
St. Jude Donor '04-'05-'06-'07-'08-'09-'10, '14-'15
Factory/Walker pipes, ~ 50 hp on a 427 at hi 6000-6500 RPMs has long been stated, of course a lot less at lower RPMs, where you’re moving less air/exhaust. But remember most of the aftermarket pipes have considerably larger internal diameter so the loss is significantly less (the factory internal pipes were very small, 1 7/8 OD, and about 1 5-6/8 ID.
Yep As I stated in my most... It's Like being Chocked to death. 1 7/8 is a HP Killer.
Drifting
Joined: Mar 2011
Posts: 1,402
Likes: 214
From: Iowa
I ran 2.5” from Allens…they fit under the stock covers as will 3”…I mated them to Hedman coated side pipe headers…I didnt dyno but I dont think there was any flow restriction/power loss. The stock 1 5/8 OD pipes (or whatever they are) mated to a set of stock ram horn manifolds makes me cringe.
No heat issues…noise was tolerable and that is subjective. When I had the pipes welded up I had the shop turn the tips down a few degrees to push the noise more down and away. I’d do it again.
No heat issues…noise was tolerable and that is subjective. When I had the pipes welded up I had the shop turn the tips down a few degrees to push the noise more down and away. I’d do it again.
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,140
Likes: 4,248
From: US-PNW
Those of us with the pipes available through GM have great sound. Not harsh at all. Too bad there are current pipes that give them a bad rep.
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Safety Car
Joined: Jun 2000
Posts: 4,711
Likes: 552
From: St. Louis MO
2020 Corvette of the Year (appearance mods)
C2 of Year Winner (appearance mods) 2019
CI 4-5-7-9-10-11 Car Show Winner
CI 2-3-4-5-6-7-9-10-11 Vet
As above no heat problem with factory style covers and makes undercar jobs MUCH easier.
If your Vette is just a driver (like mine) then go with 2 1/2" ram horn manifolds. Great sound but even better if you add crossover pipe
Can't be look
Link to my install --> Click here
Link to crossover I did on my '65 -- '69 -- '66 --> Click here
If your Vette is just a driver (like mine) then go with 2 1/2" ram horn manifolds. Great sound but even better if you add crossover pipe
Can't be look
Link to my install --> Click here
Link to crossover I did on my '65 -- '69 -- '66 --> Click here
Le Mans Master
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Race Director
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From: north of Chicago
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My 1967 L68 begs to differ too (485 hp) posing that is
Le Mans Master
Joined: Dec 2004
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May Be a foolish question - CorvetteForum - Chevrolet Corvette Forum Discussion
Burning Brakes
Joined: Oct 2006
Posts: 1,038
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From: Port Orchard, WA
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St. Jude Donor '25
I'm running the 2-1/2" ID VettePacks from Chambered. After about 1,000 miles I believe they're quieter than the 1-5/8" ID reproduction sidepipe mufflers that were on the car, or maybe they just sound so much better under heavy throttle that's how it seems. No question in my seat of the pants the other pipes were robbing the L76 with stock ram horns of HP. And just a deeper and throatier sound all around sound.
https://www.corvetteforum.com/forums...pe-update.html
Looks like I'm not the only one here that's running them:
https://www.corvetteforum.com/forums...-the-news.html
https://www.corvetteforum.com/forums...pe-update.html
Looks like I'm not the only one here that's running them:
https://www.corvetteforum.com/forums...-the-news.html