Posted by Chris Case [108.247.147.90] on Sunday, November 01, 2015 at 13:04:12 :
In Reply to: Camshaft Grinds posted by John S [108.3.93.3] on Sunday, November 01, 2015 at 07:22:41 :
Link to an Archive page on PWA site. MaineSS was their Clueless of a couple years ago, though he was putting his ideas into steel. I don't know if you ever finished his projecathon, I stopped paying attention when it became a pay site.
Anyhow, he dug up data on M37 and Plymouth cams, both at zero lift and .050", and a Delta 400M regrind too.
A bit of my own googling did tell me that in cars, Chrysler did go to longer duration, and 42# of spring pressure @ 13/4". A couple more lbs can be done with shims. But having a machine shop check your antique spring is a good idea. Just like suspension springs that have sagged.
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