Smog Pump Identification

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**Mr70** · #1 01-14-2008, 08:08 PM

It's probably a 3927116 AU pulley.
That was used on nearly every Low horse small block & 4cyl.including Corvette from 1968-77..No BB useage at all.
Based on your pumps date,I would imagine it came on a 1972 model originaly.

**COPO** · #2 01-14-2008, 08:58 PM

Other than the date, is that pump correct for other years as well? I was thinking 69-72 all used the same pump.

**Mr70** · #3 01-14-2008, 09:18 PM

That #1149 pump was used throughout 1969-71,as I'm pretty sure they changed over to a slightly different design beginning with the 1972 models and carried on from there.

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