Three links to explore.....
How much 'parasitic load' does a camshaft represent?
https://cr4.globalspec.com/thread/25...haft-represent
Valve Spring Power Consumption
https://www.eng-tips.com/viewthread.cfm?qid=236426
Calculate Torque Required to Turn Cam
https://www.reddit.com/r/Engineering...d_to_turn_cam/
" I was taught that the only power taken away from an engine due to the installation of heavier valve springs (very little) was due to extra friction/heat created. Valves being pushed down, and others returning should cancel themselves out..
Plus flat tappet and roller cams exist if that makes any difference in the power required. I'm a CS student so.. I'm not sure how specific calculations would have to be."
( Information provided in this post does not represent any endorsement and is offered for general interest only )
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/
Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE