There are multiple places in Michigan that offer nitriding processes.
Start here......
https://www.ahtcorp.com/services/nit...urizing%20(FNC).
https://sunsteeltreating.com/#:~:tex...to%2030%20tons.
Ordering a new cam from Comp ?
COMP Cams has proven their technological leadership by becoming the first aftermarket valve train company to own and operate a Pro Plasma™ Nitriding service in-house.
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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)
Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE