Kelso

I have searched the site and I have not be able to find these numbers. Does any one know what the spec are for the stock cam in a 1982 crossfire motor? I'm thinking of making a change but would like to know what I have now before make the change.

I do have a Renagade Manifold on order. (Hope for Christmas arrival). I am also planning to change heads when I install the manifold this spring and may change the cam also at that time.

Thank you for any assistance.

Gordonm

Here is what I found. Very mild numbers.

Stock GM L-83 Cam Specs w/ stock 1.5 rockers:
GM Cam # 14044613

Intake:
Opens BTC: 24
Closes ABC: 92

Degree Duration: 296 @Lash / 250 @.010 / 202 @.050
Lift:.410
Lobe Centerline: 114

Exhaust:
Opens BBC: 72
Closes ATC: 44
Degree Duration: 296 @Lash / 250 @.010 / 206 @.050
Lift: .423

terry82

the cam up grade is a must .the cams in the 82 were soft[they went bad a lot] and not for performance[good for mpg].heads are going to help alot.when i changed my cam i also changed the valve seals[the umbrella type]and the valve springs.use a good double roller chain.i would do all of it at the same time .the new intake should be great,mine is ported out.the guys that you got your intake from can make the best suggestions for your cam .let us know how it turns out.

7T1vette

Shoot... I was curious about the "sock cam".

Kelso

Thank you that is exactlly what I needed.

Kelso

Spelling was never one of my strong points.

Kelso

Good advise. I will keep your suggestions in mine.

Again Thanks

tailskid

Please post the results of your improvements. I would be very interested in hearing how it turns out.

7T1vette

Don't take the 'humor' personally. I was legitimately curious about a "sock-cam" until I opened the thread and noted it was spelling error. Just some mundane humor indicated...didn't mean to berate for simple typo.

mooneyd

http://www.corvetteactioncenter.com/.../82engine.html
Hope this helps.

mlcounts

I too am very interested how this all turns out and what all you replace with your renagade!

mike

Kelso

Great this helps a bunch. Not much this sheet doesn't cover.

Thanks

KY_BOB

Gota love the internet. This is 13 years old but it's the information was looking for. I inherited my Fathers 1982 a few years back. I've been planning an engine swap for a while now but I think I'll stick with the original. It has a couple of leaks and smokes a little on start up.. I think I'll have it freshened up and maybe make some very small updates. If I'm going to have the cam and lifters out anyways, I could buy one with a couple of degrees more duration, I wouldn't tear into it for just that but why not get an extra 5-10 hp instead of buying another stock one.

Buccaneer

Even though this thread is 13 years old, it is wrong on the spec for an 82. Here is the spec that will work and the key thing to consider is the duration @ .050. You can NOT stray too far from the stock duration. A too higher than stock duration will run poorly and the stock ECM will not be able to control the motor efficiently. The only way around this issue is to run the EBL ECM. I would not go any higher than 212 duration with a stock ECM.
LSA 114
Intake duration @ 0.050 202
Exaust duration @ 0.050 206
Intake lift 0.403
Exhaust lift 0.415

Here is another cam from comp that is pretty close that would work as well.
PN: 12-249-4
GRIND #: CS XE249-12
Lift: In .434 EX .444
Dur@ .050 In 206 Ex 212
LSA 112