Hello again. I'm beginning a complete rebuild of 302 out of a '76 Mustang II. We put a pair of AFR 165 heads on it (CR~10:1) and are going with their recommendation for a Comp Cams 268 grind. Their actual grind number is XE268H. We're wondering about vacuum for power brakes, etc. Has anyone done anything close to this? And how was vacuum at idle or off throttle?
Thanks!