Quote:
Originally Posted by Rob Richter
You might be able to get that info from Racer Brown Jim in Maryland.
He bought out Racer Brown Cams and has many of the masters.
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ok I emailed them, will see. It is old though.
I found this handy chart, looks like older cams but with Advertised and .050 duration. Just lobes, no LSA given.
The 72-R isnt on there & there's no correlation between the cam number and duration. IT does seem like, for the rollers, the .050 duration is about 40 degrees less than advertised, give or take a few.