The conversation between myself and The owner of AFR was interesting.... they do NOTHING but toss in whatever valve and spring Bob says, no "special marine spec machining" as told...

Is the hard annodizing an option?

I am sure glad I put crane 651 cams in my engines this summer and did not go with a special custom grind cam.

wise decision.

Yes be glad you did. Thread helped expose many good off the shelf cams that had pretty well proven results. Btw what build did you use the 651's in?

Its funny. I have Comp, Lunati, Howards, Crane, Erson, Crower, catalogs here. Literally hundreds of cams for hyd roller bbc chevy engines, fitting everything from a towing 454, to a drag strip 598.

Then the need for a "custom cam" comes up. Problem is, all these cams that come from MK, appear to be almost a once size fits all! A 548ci gets fairly close to the same cam, as a 496/502! Almost all the same LSA, almost all the same ICL, durations within a few degrees, lift within a certain range, etc.

A AFR headed 9.8:1 540, gets almost the same cam as a 9:1 GM iron headed 540, with a full point of compression difference too! How many guys had to be schooled on the importance of static compression, and its effects over the phone. The recommendation of using the thinnest head gasket possible to maximize the combo. lol

Tried pm u. Box is full.

back when I used to talk to bob, I was in the process of helping Icdedppl put his 540's back together. Was a basic combo, 540, dart 345 heads, 1071 blowers, 651 crane cams. He told me we were leaving 100HP on the table with those old antiquated cams on dans build. Sure glad we decided to leave them in there.

Whew, Good thing you did , me and Joe had no idea for the past 2 years

540ci
dart 345s
8.2-1 compression
tbs 8-71s 6% under driven quick fuel 850 carbs
emi thunder manifolds with dry tails