L-82 Questions
Thread Starter
Racer
Joined: Mar 2004
Posts: 484
Likes: 0
From: Guston KY
L-82 Questions
All,
Does the L-82 have 4 bolt mains?
I think so, but just makin' sure.
Valve sizes?
When adding mods, how good are the heads? Should I consider replacing them?
If I add headers and sidepipes, a good intake, cam and carb, what kind of power can I expect without adding heads?
Thanks in advance. . .
Does the L-82 have 4 bolt mains?
I think so, but just makin' sure.
Valve sizes?
When adding mods, how good are the heads? Should I consider replacing them?
If I add headers and sidepipes, a good intake, cam and carb, what kind of power can I expect without adding heads?
Thanks in advance. . .
Instructor
Joined: Mar 2003
Posts: 102
Likes: 0
From: Lawrenceville GA
Re: L-82 Questions (79-L-82)
You are thinking along the same route I am. I am going with Hooker sidemount headers, Edelbrock Performer Intake, Edelbrock Performer Carb, and probably a mild cam.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: L-82 Questions (79-L-82)
4 bolt and forged crank. I fully tested the stock rods to well over 7000 for years after a balance job with better flat top pistons. Mine came with 2.02/1.6 valves. the heads are an big open chamber design of @76 cc.
So my advice is don't put a penny in them. The aluminum intake flows as good as the Edelbrock Performer manifold so don't replace it unless you go bigger like the Weiand Stealth.
What really wakes up the L-82 is more compression like 64 cc heads. The cam is fine with better heads unless you make a big jump.
So my advice is don't put a penny in them. The aluminum intake flows as good as the Edelbrock Performer manifold so don't replace it unless you go bigger like the Weiand Stealth.
What really wakes up the L-82 is more compression like 64 cc heads. The cam is fine with better heads unless you make a big jump.
Instructor
Joined: Mar 2003
Posts: 102
Likes: 0
From: Lawrenceville GA
Re: L-82 Questions (gkull)
Would these heads be good then
http://store.summitracing.com/partde...608919&view=33
I already bought the edelbrock intake manifold so I might as well use it
http://store.summitracing.com/partde...608919&view=33
I already bought the edelbrock intake manifold so I might as well use it
Thread Starter
Racer
Joined: Mar 2004
Posts: 484
Likes: 0
From: Guston KY
Re: L-82 Questions
So, you're saying that the heads are pretty good already.
What about the Holley SystemaxII with the aluminum heads, intake, cam, etc.
Anyone have experience with this? :confused:
It's coming with Hooker headers and side pipes. They are not installed.
They look to be in pretty good shape so I am going to reinstall them.
Someone above stated that added compression really wakes up the L82.
What about milling the stock heads? Would that be worth it?
Thanks again. . .
What about the Holley SystemaxII with the aluminum heads, intake, cam, etc.
Anyone have experience with this? :confused:
It's coming with Hooker headers and side pipes. They are not installed.
They look to be in pretty good shape so I am going to reinstall them.
Someone above stated that added compression really wakes up the L82.
What about milling the stock heads? Would that be worth it?
Thanks again. . .
Burning Brakes
Joined: Mar 2001
Posts: 1,211
Likes: 5
From: Nashville TN
Re: L-82 Questions (79-L-82)
The stock head castings are the same as L-48 heads. For the L-82 they were just machined to accept bigger valves. Those heasds are prone to cracking and are not really a performance cylinder head. I would try a world/dart 64cc head or even a L-98 Corvette aluminum 58cc head.
Le Mans Master
Joined: Mar 2002
Posts: 7,456
Likes: 2
From: Coming home from Luckenbach Texas
Re: L-82 Questions (79-L-82)
No, the stock heads are not that good. They're "smog" heads. And they are prone to cracking if you try to mill them. The rest of the motor is pretty stout, however.
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Thread Starter
Racer
Joined: Mar 2004
Posts: 484
Likes: 0
From: Guston KY
Re: L-82 Questions (page62)
Thanks,
That's what I needed to hear.
So the stock heads will have to go eventually, but not right away.
What about that Holley system?
It seems awfully reasonable. $1399 for heads, intake, cam, timing chain.
That's what I needed to hear.
So the stock heads will have to go eventually, but not right away.
What about that Holley system?
It seems awfully reasonable. $1399 for heads, intake, cam, timing chain.