Author Topic: 440 crankshaft pulley questions  (Read 659 times)

Offline KillerBee

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440 crankshaft pulley questions
« on: July 26, 2016 - 11:14:59 PM »
Working on pulleys on a 1968 440 engine that will have power steering.

I pulled a couple double groove crankshaft pulleys off-the-shelf that are two different sizes.
They're both off big block engines.
One double pulley has both the same size diameter grooves at what looks to be 6 1/2" or 6 5/8"?

The other has the larger front groove at about 7 5/16" and the smaller rear one.

All the double groove water pump pulleys I have appear to be the same size.

I took a quick measurement of the double groove crank pulley that's currently on another of my 440 engines, (1966) and it is also the smaller 6 1/2" double pulley with both grooves the same size.

I don't see any new (or used) stock type 6 1/2" double groove pulleys advertised for sale, just the pulleys with the larger front groove. Are these 6 1/2" pulley oddball or one year only pieces?

Is one pulley better to use with power steering on the 1968 440 than the other?

Thanks.