I acquired this camshaft for my ls1 build and the guy I got it from is telling me its a GMPP hot cam but I am unable to confirm that from the numbers on the cam. Does anyone recognize these numbers. The numbers between the lobes are difficult to read. Thanks in advance

 

the best I can tell the numbers are 10 384 83306

 

It could have started life as a stock 4.8/5.3 cam and after a bunch of miles
was sent to China and reground to Hot cam specs. E-Bay sorta deals like that
are out there. Just take a vernier caliper and measure the width of the base
circle and subtract that number from the maximum lift point of the lobe.
(12 and 6 O'clock measurement minus 3 and 9 O'clock) Goofy description I
know. Then take that number and multiply it by the rocker arm ratio (1.7) to
verify the lift. Depending on your budget you may just want to sell it and get
a new cam that has the exact specs on a card so you know what to ecpect.