"...The camshaft rule change has lessened, or almost eliminated my search for a good 067 cam for my car..."
Yes, and unless you just wanna run something that's similar to a factory grind, there is no good reason to run one, from a performance standpoint.
As was just recently posted, the NEW cam rule is a minimum vacuum requirement, ONLY.
That means to me that the lift & duration numbers of your cam does not make any difference, at all, from a rules infraction standpoint..
Instead, ONLY the vac number @ 1200rpm will be checked.
As mentioned, I learned from my dirt track days that you can run a pretty healthy cam, & still make the minimum vac requirement.
I've even seen some sbc dirt track cams advertised as cams that will make more vac, for classes with the min vac rule.
BUT, I've never seen any Pontiac cams that were specified as vac rule cams. So, you'd need to do some vac testing in your engine, with different cams, to find out how much cam you can use & still pass the vac test. I'm guessing that the size of the cam you can legally run will surprise you.
This cam testing would be VERY interesting to me. Wish I had the budget to take part in it myself. If I had the money, I'd even buy some possible cams for someone to try.
Maybe some of the experts here can post some of the decent high vac HFT cams they have tested.
I haven't ever really tried to learn what cam specs produce more or less vac. I assume that a bigger LSA would produce more vac. And I assume that variable duration lifters, like Rhoads, would increase vac @ 1200rpm. And, I assume that thinner oil will increase the bleed down rate. But, I'm no expert.
With all this in mind, I think the 1st cam I'd look at is the Summit 2802. It has a 114° LSA. With Rhoads lifters & thin oil, it MAY pass the vac rule. If not, it should at least let you know how close the vac is, either above or below the legal amount.
https://www.summitracing.com/parts/sum-2802
The Voodoo cams should also produce good vac, along with their good performance. A combination of Voodoo, Rhoads, & thinner oil MIGHT be a good high vac, high power combo.
https://butlerperformance.com/i-2445...-10510702.html
https://butlerperformance.com/i-2445...-10510703.html
I've read that some cam co will grind a cam with a different LSA than advertised. So, if a particular cam would make big power, but just barely miss the vac min, it might be that an LSA increase of a few degrees, would make it a legal & good cam for this app.
I think I've also read that slightly advancing or retarding the cam timing can affect vac.
As mentioned, I think this is very interesting. You'd be trying to find the HFT cam that would produce the quickest ET in your car AND that would pass the vac test.
But, if min ET is not the goal, this info is useless.