Some Alternator Help

**Mr70** · #1 03-09-2008, 09:16 PM

Carl
It might be your camera angle,but is that an incorrect thin stamped Alt. pulley you're running?..That or do you have a standout spacer behind your waterpump pulley?
The correct deepgroove W/P pulley is stamped #3976060 and should not have any spacer behind it.
The correct deepgroove machined Alt.pulley is #1970831 and won't have a number stamped on it but it does stand out 1/4" from the fan surface.
Rick

COPO 70 RS/Z28 · #2 03-09-2008, 11:25 PM

The water pump & crank pulley line up perfect, I bet the alt pulley is wrong. If I read correctly you said the correct alt pulley would pull the belt forward 1/4" ??

**Mr70** · #3 03-10-2008, 02:23 AM

It sits off the fan face about a 1/4".
Here's one for reference on D&R Classics' website,although they didn't come shaded gold from the assembly line back then.
http://www.drclassic.com/catalog/Cam...od/M00228.html

COPO 70 RS/Z28 · #4 03-10-2008, 04:44 AM

Thanks Rick,

Ill try the repop. I have some old alts laying around. I can get an old fan off of one of them. Is the 1100837 fan different or are they all the same?

**Mr70** · #5 03-10-2008, 05:02 AM

Aim for a shark tooth.... EXAMPLE

COPO 70 RS/Z28 · #6 03-10-2008, 05:12 AM

Ill keep my eyes open,

Some one just picked that one off!

Got one

**Mr70** · #7 03-10-2008, 06:14 AM

Yeah that seller has a bunch of those w/BIN.
Good for you..and Frank Arone too.

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