72 Chevelle exhaust question
72 Chevelle exhaust question I am about to install my 5.3 in the chevelle and don't really know what to do about the exhaust. The small block that came out of the car had headers, but I don't know if that is what I want to go back with. The car will be a daily driver and the 5.3 is stock other than a ls6 cam. Are the truck manifolds pretty good? I really don't want to spend another $500 when I am already over budget on the swap already.
If I do go with manifolds, who makes the pipe from the manifolds to the flange with the o2 sensor installed.
Thanks in advance, and Merry Christmas!
If I do go with manifolds, who makes the pipe from the manifolds to the flange with the o2 sensor installed.
Thanks in advance, and Merry Christmas!
If it is going to be a DD, even with theLS6 can, you should be OK with OEM manifolds. You can find the flanges at Speedway motors, but most likely you well have to get a exhaust shop to bend you up some pipes. You might also pull some from the junk yards....
TECH Fanatic
Joined: May 2010
Posts: 1,081
Likes: 8
From: Atlanta, Ga
Stock manifolds should be just fine, they worked on the original engine so why not on yours? I agree with bczee regarding the head pipes, just remember to get the o2 bungs if they are not in the manifolds.
TECH Fanatic
Joined: Oct 2011
Posts: 1,356
Likes: 2
From: Felton Pa
When I put the truck manifolds on my Chevelle, the flanges were to wide for my framerails, that could be just where I set my engine, so I cut the flanges off and welded V-Bands to them. Then I had to take the Proportioning Valve on the inside left framerail and unbolt it and push it up out of the way. After that they worked great!
I used the 98-02 f body manifolds. They support at least 350 hp, fit between the frame, dont hit the firewall, clear my z bar, and cost me $40 used. I could not get the truck manifolds to fit in my 72 442. You'll need O2 bungs welded in just below the collector. Got my flanges from speedwat motors.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
I used the F_body manifolds before I went with headers. Minor areas of contact with the driver side O2, I plugged the OEM location and welded a.new bung 90 degree to better clear the streeting box.
Last edited by bczee; Dec 29, 2012 at 08:44 AM.
