Dennis
Cam Identification
Thread Starter
Tech Contributor
Joined: Jan 2007
Posts: 19,472
Likes: 1,171
From: Dyer, IN
Thread Starter
Tech Contributor
Joined: Jan 2007
Posts: 19,472
Likes: 1,171
From: Dyer, IN
Le Mans Master
Joined: Nov 2015
Posts: 7,472
Likes: 2,647
From: Really Central IL Illinois
You can determine the cam profile with a dial indicator and degree wheel. Not rocket science, put it in a block and put a lifter on the lobe and turn the cam. Record the lift and duration of each lobe to determine if it has any wear. You could always put it in a lathe and check it also. Might be worth saving, might be junk.
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Racer
Joined: Sep 2010
Posts: 278
Likes: 159
From: Alexandria VA
Look at the valve spring spec. No wonder so many engines with aftermarket cam kits wipe the cams quickly or during break in. The Chevy springs used for the same 30-30 cam (and LT-1 cam) had a closed spec of 80# and open spec of 200# and ran at 6500 rpm without an issue. The Crane springs have more than 50% greater spring force than required for the same cam as GM 30-30.