40 degrees initial!

Already did.
But that 223* cammed combo expired in 2005, and I upgraded to a Hughes He3038AL; 230/237/110cam.
The thing is, with 180 psi,and running a minimum coolant temp of 207*F, Most of the time, the throttle is barely open enough to activate the Vcan; I actually had to move the sparkport to run 1700rpm on the hiway. I have, in the cab, a vacuum gauge hooked to the sparkport, so I always know what the Vcan is getting.
So when I hit the hiway, I just advance the timing until the car stops picking up speed. Kindof like Gpaw would do on the old JohnDeere, to get some roadspeed.