Sponsored Content
201281983954r.jpg)
I'm thinking about putting headers on my stock '77 L-82. McJack's has 4 different versions depending on the diameter of the tubes and the size of the collectors. Two of the versions are "D" port, as opposed to rectangular port. I have no idea what the configuration of the ports are on my engine. Anybody know what the port configuration is on a stock L-82? Don't want to take the manifolds off to find out. Would rather have the new headers ready to be installed before taking off the originals.
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
SPONSOR AD:: (Our Sponsors help support Vette Registry)
Stock L-82 heads are rectangular port.
GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975
Click here to see more pics of my Vette on CarDomain.
Lifetime Member #26
Borgeson Steering Box
Born 8/1981
Sequence #3975
Click here to see more pics of my Vette on CarDomain.
Lifetime Member #26
1 person likes this post
Sign In to Like this post
Sign In to Like this post
Free Member
Send PMCumming, GA - USA
Joined: 7/8/2013
Posts: 19
Vette(s): 1975 Corvette L-82 4-speed Coupe
Rare Dark Red/Dark Red Combo
732 74L
one California owner 36years
....also, I believe they are 2.5 in. out the engine, back to the L-48 2.0 in. collector, and then back to 2.5 in. all the way back........not the best config.
|UPDATED|9/4/2013 9:25:18 AM (AZT)|/UPDATED|
L-48's are simply 2.0 in. from the manifold, all the way out the back of the car like it should be.
L-82's SHOULD be 2.5in. from manifold back.....but both engines used the same 2.0 in. collector.......bogging down the L-82, ......just like that crappy caty. converter design,.....two pipes into one converter,.....enough to make one sick.....horrible design......(can you tell I own a '75 L-82)?!......haha
Chevrolet was too cheap to build/install a 2.5 in. collector to put in the L-82 cars during the 70's
Oops......the MOPAR is coming out in me!.....lol
* I would tell him you want 2.5in. all the way back, true dual w/o that caty. converter (if you do not live in Cali.)
* I would tell him you want 2.5in. all the way back, true dual w/o that caty. converter (if you do not live in Cali.)
you will get better mileage and see #'s closer to 275hp/275lb.-ft
(orphaned post added here-aapple)
(orphaned post added here-aapple)
|UPDATED|9/4/2013 9:25:18 AM (AZT)|/UPDATED|
1 person likes this post
Sign In to Like this post
Sign In to Like this post
in Forum: C3 Engines, Driveline and Handling
Sponsored Content