Alignment Issue- water pump and damper pulleys
Attached is a picture of the pulley misalignment.
The oil slinger was installed. I don't have any other pulleys to examine. That Mancini Racing spacer is 1/8", whereas I need 1/16". So it would still be the same amount off.
The water pump pulley is stamped 36713/8 and the outside edge width (at the V) measures 5/8".
The damper pulley is stamped with an S and measures 3/4". So it is 1/8" wider than the water pump pulley.
Could these pulleys be a mismatch for a 69 340?
Does anybody have 68 or 69 340 pulleys to compare? I believe that things changed in 70.
Yes, they did change in 70 when they switched from the cast iron water pump to the aluminum water pump. The pulleys are different.
There are also two different bolt patterns for the crank pulley, symmetrical & non-symmetrical.
According to the early edition of How to Rebuild Your SB Mopar, the offset bolt pattern was used from '64-'71, and the symmetrical bolt pattern was used after '72.
So, if you have a symmetrical bolt pattern on your crank pulley, it is from the 72 and later vintage, and the depth should be different.
They did make offset pulleys for both the cast iron AND aluminum water pump engines which should have different depths.
Also, the alternator brackets are different for the different vintage water pumps, make sure that you have the proper alt brackets....
The early water pump pulleys are more "square" with the depth, where the 70 & later have a "chamfer" in the profile for lack of better terms.
What exactly are you working on? A 69 340, with or without A/C.