1982 Sock Cam Spec.
Thread Starter
Advanced
Joined: Dec 2008
Posts: 52
Likes: 0
From: Medina Ohio
1982 Sock Cam Spec.
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.
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.
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
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
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
Le Mans Master
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
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.
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Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,117
From: Crossville TN
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. 
Drifting
Joined: May 2004
Posts: 1,442
Likes: 2
From: Flanders NJ
Intermediate
Joined: Mar 2010
Posts: 41
Likes: 0
From: Zephyrhills FL
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.
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.
mike
Advanced
Joined: Apr 2013
Posts: 63
Likes: 0
From: Dawson Springs KY
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.
Safety Car
Joined: Nov 2005
Posts: 3,532
Likes: 1,185
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
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
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
