[60sstuff]

[QUOTE=Dick Boneske;3993874] but '66's, I believe, used only a straight hose nipple in the base of the center carb for heater-A/C vacuum. Distributor vacuum is taken off the hollow carb stud in '66.

Dick - Great info (not rambling) and pics! This thread may be a little more than Terry asked for but that's why this forum is so valuable. Maybe 66 4 BBL cars used the hollow stud for dist. vacuum, but the 66 Tri-Powers got the dist. vacuum from a short straight brass nipple threaded into the center carb base as seen in the pics below. The hollow stud would have a factory black plastic cap. The exception would be the Cal. Smog Tri-Powers which used the steel line off the right front center carb body. I think the A/C vacuum in 66 came off the hollow stud.

[Terry M. Hunt]

Never too much information. I print all this stuff and keep it in a giant binder. Probably need to start a second one. Many thanks, Dick, for the photos and info. Put yourself down for a Honey Baked ham also.