AIR pump pulley & manifold tubes

[Paul C.]

I bought an AIR system that turns out wasn't for a 71. The pulley is 3927116AU--think it is for a 75-76. Does anyone have pictures of the 75-76 or they may be for a 73 AIR manifold tubes. How can you tell what year they are for? Thanks

[Joe L.]

Re: AIR pump pulley & manifold tubes

I bought an AIR system that turns out wasn't for a 71. The pulley is 3927116AU--think it is for a 75-76. Does anyone have pictures of the 75-76 or they may be for a 73 AIR manifold tubes. How can you tell what year they are for? Thanks

Paul------


GM #3927116 is an AIR pump pulley first used for the 1968 model year. However, as I'm away from my references, I can't tell you if it's correct for a 1971 LT-1. It may be, though. As I recall, the pulley for your application was a part number that began with 3927. I just don't recall if the last 3 digits were 116. I think there was several AIR pullies with 3927 "prefixes".

As far as the tubes go, pictures would be helpful.

[Paul C.]

Re: AIR pump pulley & manifold tubes

I have the correct pulley--#3917234 but also have the 3927116AU and want to know what year that pulley is used for. I will post pictures of the tubes.

[Tom R.]

Re: AIR pump pulley & manifold tubes

I have the correct pulley--#3917234 but also have the 3927116AU and want to know what year that pulley is used for. I will post pictures of the tubes.

If you've got the pump, there is a date code.

[Paul C.]

Re: AIR pump pulley & manifold tubes

The pump was incorrect===1973. When I bought the parts I didn't know much about the system. The clamps were original and so were the two brackets, a few other parts. The pulley, pumps, and tubes weren't. Trying to figure out if they all came from the same year