69 Z28 - Smog Pulley # 3932458

[72-SS-L48]

Hi Guys,

Can someone tell me the difference between the 69 Z28 Smog Pulley P/N 3932458 and 3932458DA. I need to get one for my Z.

Thanks,
Dave

[x77-69z28]

the 458 is a deep groove pulley which would be correct for a 69 z-28

[William]

At least 2 versions of the 458 pulley.

Original equipment had a hard-stamp part number and were grey or black phosphate. Later service replacements were painted black and had an ink-stamped part number.

[Jonesy]

My 74 z/28 has its original and its the ink stamp variety.

[John Brown]

That leads to another question.

Would the 74 water pump pulley and crank pulley have been ink stamped too, or been stamped with a number punch?