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Discussion Starter · #1 ·
I got this new 351c with a hydraulic camshaft, upon tearing down the motor I discovered that the camshaft still has the little black specs on the lobes -i think its called carburizing- and the lifters still have swirl marks on the faces from the factory polishing. So if everything is new I will use the cam and lifters for some other build. How do I identify this cam or get the specs for it ? It does not have any name on it, can I send it to someone and they can measure and write this info down with the same info as a cam card ? thanks.
 

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You could measure all the specs of the cam at home if you have a dial indicator and a degree wheel.

It's easy to measure valve lift - put it in a block, stick a lifter in the bore, and put a dial indicator so it's indicating the height of the lifter. Zero it, and spin the cam by hand slowly - watch where the lift maximizes, and note the number.

To determine duration (at .050,) turn the cam until the dial indicator reads .050 and the valve event is beginning (lobe is beginning to rise). Note the location of the degree wheel, or zero it if you can. Rotate the cam through the valve event, and continue rotating until the dial indicator again reads .050. Check how many degrees you've rotated through on your degree wheel - that is the duration. The two cam lobes could have the same duration, or it could be different.

Lobe separation is more difficult - you will have to rotate the cam until one of the lobes is at its peak lift. Record the degree wheel number, and switch the dial indicator to the other valve. Find where that valve's lift peaks, and record the degree number. The difference between the two would be the lobe separation, or close enough to give you a good idea.
 

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Discussion Starter · #6 ·
Thanks for the info but im stoopid like that... I found some info on the back of the cam , it says - "map" and then there are 4 pink or red dots. it also looks like a half hearted attempt to stamp the letter "c". On thr rough cast parts of the cam inbetween the lobes it is cast, "cwc 1.5- "d2 in a paint spot" "c2" then "ep 21 with a blue paint mark" and then "e1" thanks for any help, greg.
 
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