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Username Post: 2" or 2 1/2" exhaust?        (Topic#348653)
hinges56 
Forum Newbie
Posts: 45
hinges56
Age: 66
Loc: Canyon Lake ,Ca.
Reg: 06-01-08
12-11-17 07:14 PM - Post#2717626    

I'm taking the 72 to the muffler shop tomorrow to have the exhaust replaced from the manifolds back. I converted it to duals years ago but nothing lasts forever. It's a 1972 cheyenne super c-10 with a 350 and a RV cam. Now it has 2" pipes all the way back behind the wheels. Would 2 1/2" pipes be better or stick with 2" like it is now? I want it to sound healthy but not extremely loud. I'm 65 years old and have a hard enough time hearing on the freeway as it is.



 
bobschevytrucks.com Ecklers

grumpyvette 
Senior Chevytalk Moderator -- Performance Subject Matter Expert --
Posts: 17178
grumpyvette
Age: 70
Loc: FLORIDA USA
Reg: 03-16-01
12-11-17 07:22 PM - Post#2717629    
    In response to hinges56

a properly designed 2.5" exhaust (especially with a (X) pipe) should provide a noticeable improvement

http://garage.grumpysperformance.com/index.php?thr...

http://garage.grumpysperformance.com/index.php?thr...

http://garage.grumpysperformance.com/index.php?thr...

http://garage.grumpysperformance.com/index.php?thr...



IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!


 
hinges56 
Forum Newbie
Posts: 45
hinges56
Age: 66
Loc: Canyon Lake ,Ca.
Reg: 06-01-08
12-11-17 08:52 PM - Post#2717638    
    In response to grumpyvette

WOW! I guess I asked, didn't I? Thanks Grumpyvette for the extremely detailed responses. There is a lot of great information there, just not sure that I can figure it all out before tomorrow.



 
Andy4639 
Frequent Contributor
Posts: 1113

Age: 57
Loc: Liberty, SC
Reg: 08-06-16
12-13-17 07:06 AM - Post#2717767    
    In response to hinges56

A basic street 350 motor 2" are 2.5" would be fine. I ran 2.5" on my C10 with LS 6.0 all the way to the tips. Nothing done to the stock motor.


1956 Bel Air - LT-1/4l60
1964 SS Impala -350 crate/powerglide
1967 Ramp truck - 350/ 4 speed
1971 C 10 - 6.0 LS / 4l80e 4:10 gears 30 years owner
94 Elderado
2000 S-10
2008 LTZ Tahoe
2011 Treverse


Edited by Andy4639 on 12-13-17 07:07 AM. Reason for edit: No reason given.

 
bry593 
Contributor
Posts: 804

Reg: 10-07-13
07-13-18 10:45 AM - Post#2739861    
    In response to Andy4639

I always run dual 2.25" on my low performance 350's. Any larger is just overkill and wasted money.



 
bobschevytrucks.com Ecklers

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