Topic: X-PIPIES on a C3
in Forum: C3 Fuel, Emission Control, and Exhaust Systems
(inserted clickable links)
Steve, Lifetime Member #129
74 coupe 4 speed 350, 54K actual miles,
all original; paint, interior, engine,
split bumper. #'s match. 2nd owner, no stress cracks.
Lifetime MemberMoney spent would be better off on headers if the were not already installed.
As far as C3 exhaust true duals would be hard to beat.
Here is the clickable link from above....
XPIPE
Lifetime MemberModerator
The install on the '76 looks like you'd never be able to get the driveshaft out if ya needed to. Granted, what they show IS listed as a prototype system...
The concept is valid...the equalization of exhaust pulses from side-side does help in the scavenging effects of the exhaust, which in turn helps with being able to get more fresh air/fuel into the cylinders. It will show on a rolling/engine dyno, but on the seat-o-the-paints dyno?...not so much.
The solid-axle cars had cross-over pipes...
Joel Adams
C3VR Lifetime Member #56 
My Link 
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Brian - NCM Lifetime Member
73 coupe L48, Flat-top pistons, Performer RPM Heads, Crane Cam and roller rockers, Holley 650 vac sec. Performer intake,
3.55 gear BTO 200-4R trans,
Leather seats, Seatbelt Plus 3point seatbelts, Pioneer CD player
Magnaflow Exhuast System
Steve, Lifetime Member #129
74 coupe 4 speed 350, 54K actual miles,
all original; paint, interior, engine,
split bumper. #'s match. 2nd owner, no stress cracks.
I had the catalitic convertor removed and had straight pipes installed. She sounds great and regardless of who says not she definitely has more power, much more. If you are afraid of the law have the cc reamed out and welded to one pipe, it looks like the CC is for real. Gene
Lifetime MemberThe H pipe is designed to do the same thing from the factory but doesn't maybe have as smooth of a flow as Joel indicated.
If I had to buy one it would be Bassini. Only beacuse I like there advertising phlosophy......
Lifetime MemberInstalled pipe under spring area. It also cutts down on decibles or vibes inside of car. It does change exhaust sound.
After first trying to repair the original system on "BIGBRRD" we ended up ripping it all out. Put in a Pypes X-pipe and Flowmaster Delta 50 mufflers but didn't have enough time behind the wheel before the car went into the bodyshop to know if there was any difference in performance. When the car comes back a full tune-up will be needed to dial in the rebuilt Q-jet with the new headers and the pipes. Just guessing that it will have more "go" than the original setup.
Jim Olson 
"The Toys"...!!! Save the Wave! 