Time to try to sort out all of the different vacuum advance units for all 65-67 big blocks. Need the three digit number stamped on your adv unit if you feel it's the original to the car/engine.
There are questions on the 65 396, 66 390 and 425 HP and and all 67's. Please post the distributor part number and date if possible. Thanks.
There are questions on the 65 396, 66 390 and 425 HP and and all 67's. Please post the distributor part number and date if possible. Thanks.
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