Pulley diameters - anyone have these pulleys

[KurtS]

Thanks guys! 7 down!

[plumL78]

3863108  BB cast crank  67  is 6.735 or just .015 short of 6 3/4

[plumL78]

3869978 triple groove cast pulley in the same as the 108  cast pulley   6.735 or  .015  short of 6 3/4

[jdv69z]

Still need this one?  3947824   Water pump  DG, BB   69

I've got one on my car, but I don't know how to measure it with everything in the way?

[KurtS]

Thanks Kerry!

Jimmy, easiest for someone with the pulley to measure one. Measuring the circumference and dividing by pi has some error.

[1968RSZ28]

3876846 Water pump 68 ≈ 6.1 (≈ 6-1/8" with tape measure) code DJ

Note - I didn't measure this pulley myself. I gave this pulley to a friend a few months ago and he measured it for CRG.

Paul

[ko-lek-tor]

3863108 6 11/16 in
3874412 6 11/16 in
3874416 6 3/4in
3947824 5 7/8in
3955291 6 11/16in

Paul I get 6 3/16in on 3876846 DJ

[1968RSZ28]

3876846 Water pump 68 ≈ 6.1 (≈ 6-1/8" with tape measure) code DJ

Note - I didn't measure this pulley myself. I gave this pulley to a friend a few months ago and he measured it for CRG.

Paul I get 6 3/16in on 3876846 DJ

Hi Bentley - I'd go with your measurement (+ 1/16"). As per my note above, I didn't measure the pulley myself so I can't guarantee accuracy.

Paul

[jdv69z]

Looks like somebody's got it covered.

[plumL78]

Happy to help Kurt

[rare396bronze]

3921923  about 2 lines past 6 3/4. Hope the helps. About the only pi I know is apple or cherry pie!

[KurtS]

Here is the updated 'missing' list:

Pulley #   Application     Notes        Year
3744043   Crank           SB             67, 68
3755820   Crank           SB     67
3790337   Crank ext for ps   L6     69
3850156   Alternator      L6, 3843346 fan used   67
3853104   Crank ext for ps   L6 with A/C   67
3853400   Crank ext for ps   230 cu in   67
3860457   Power steering         67, 68
3871253   Alternator     L6, cast iron, 3843346 fan used   67
3876872   Crank ext for ps   L6     67, 68, 69
3880886   Power steering    L6     68, 69
3890419   Water pump        67, 68
3909815   Alternator      Fan and pulley are one piece   67
3909817   Alternator                67
3927789   Water pump  L6 with A/C   69
3932498   Crank           w/ PS, unverified usage   69
3937788   Crank           BB, unverified usage   69

Thanks!
Kurt

[Marty]

3744043 and 3755820 are both 6 3/4"

I think the stamped steel PS pulleys are all the same diameter.

Martin

[HawkX66]

Here is the updated 'missing' list:

Pulley #   Application     Notes        Year
3744043   Crank           SB             67, 68
3755820   Crank           SB     67
3790337   Crank ext for ps   L6     69
3850156   Alternator      L6, 3843346 fan used   67
3853104   Crank ext for ps   L6 with A/C   67
3853400   Crank ext for ps   230 cu in   67
3860457   Power steering         67, 68
3871253   Alternator     L6, cast iron, 3843346 fan used   67
3876872   Crank ext for ps   L6     67, 68, 69
3880886   Power steering    L6     68, 69
3890419   Water pump        67, 68
3909815   Alternator      Fan and pulley are one piece   67
3909817   Alternator                67
3927789   Water pump  L6 with A/C   69
3932498   Crank           w/ PS, unverified usage   69
3937788   Crank           BB, unverified usage   69

Thanks!
Kurt

You're missing the one I posted for 290.

[rich69rs]

The list of "the missing" is definitely getting shorter!