292/508 question

Yep, you are in the mid 9's for SCR and the low 7's for DCR at a 104 ICL. YR had his DCR up in the low 8's..... would've been a decently wide torque RPM range.

Did you ever decide on the A/C? I can't see why it would not work. The issues I see are:
- If the idle is low, the compressor will not be cooling 100%, but that is only at idle.
- If you rip and snort to high RPM's you might want to use a larger compressor pulley (if you can get it) or a smaller crank pulley to slow the compressor down a bit. IIRC the Sanden compressors are rated up into the 6000-6500 continuous RPM range, and a bit high for peak RPM, though a bit lower seems safer, and you can manage that with pulley sizes.

Here are a few Sanden specs, thiguh the modle you may select may be different.... figure out the modle you want and you can find the RPM specs.
https://www.sanden.com/objects/Sanden Singapore SD7 Series Compressor Catalogue.pdf

BTW, cam advance is normally spec'd and measured in crank degrees. All cam degree specs are in crank degrees.... EXCEPT for LSA.