No, unless you want the trans to go into 2nd everytime you come off the throttle.
Permanent vacuum only, ie under the throttle or direct from the intake.
ahh ok so can you tell me what the small pipes on the holley should go to then
there is a big one at the bottom and also a small 1 at the bottom in the front and also a small 1 high up on the side
Small one up high = ported vacuum.That is for the distributor if you don't want vacuum at idle. Small one under the throttle = permanent vacuum. You can use that. The big pipe is permanent too, and used for either closed engine breathing or a servo.
It's better to have a feed for the modulator directly from the intake, there is usually a pipe plug you can remove, but at a pinch you can use the little one under the carb.
ok thank you for the advice mate
my inlet manifold does have holes in it but they have blanks in them
ill see if i can find a adapter for 1 of these holes
If you have modified a smog motor for more performance you may find it idles better with full vacuum, my motor idled rough with ported vacuum so I speed up idle which exposed transition slot in the Holley carb, then mixture screws don't work! I connected to full vacuum , reduced the idle speed screw, jobs a goodun!
After the oil crisis in the early seventies the cars got heavier and made less power, 5 mph bumpers, lower octane unleaded fuel and emission reduction all played a part, fortunately in this country we can tinker with it, as far as I know you cannot in California, dont know about the rest of America
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