Quote: What is the idle rpm? Maybe set high enough as a crutch that the vacuum is artificially high. Could all tie back to a too tight convertor for this cam. Or massive vacuum leaks.
I tracked a minor vacuum leak to the booster check valve. Fixed it. Sprayed brake cleaner everywhere and find nothing else. Car runs super cool never over 190 in mid summer DC heat. RPM at 850 set to max vacuum, screws out about 1.75 turns each. Car idles great and doesn't roam.
