CS130 Smaller Than A 12SI???? - Team Camaro Tech
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post #1 of 3 (permalink) Old Sep 29th, 04, 01:47 PM Thread Starter
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Join Date: Jan 2000
Location: Houston, TX USA
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I am using a '95 GMC pick up truck aluminum serpentine bracket that mounts the power steering pump, and alternator on top of each other (stacked) on the driver side of the motor.

I went to install my old 12SI one-wire alternator and find that the cradle in the bracket for the alternator is made for a smaller alternator.. The two mounting points are closer together and it does not look like my current alternator will work.

Can someone tell me if the CS120 is smaller, and if that is the proper application for use with this bracket? I guess I could order up a '95 GMC alternator and go that route if necessary.

If the '95 GMC alternator is not a CS120, does anyone know of an application that would allow me to find a CS120 to work with this bracket?

Any help would be much appreciated! Thank you for your time!

[ 09-30-2004, 07:13 AM: Message edited by: Go69 ]

1969 383CI, T-56, 12 bolt-3.31 posi, 13" C5 Rotors, PBR Calipers, rear disc system..
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post #2 of 3 (permalink) Old Sep 30th, 04, 12:21 PM
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Join Date: Mar 2002
Location: Austin, TX, USA
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I didn't know there was a CS120, but a CS130 is smaller than both the 12SI and 10SI. The mounts are a little different as well on the CS130. The most common mount has the top ear located at the 10:30 position. There are a few different orientations, but the 10:30 design is for a 92 chevy truck if I recall. Check the tech reference section of this site. You can find it from the home page. Follow the links in example for great pictures and details for model numbers and application.

Dave
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68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #3 of 3 (permalink) Old Oct 1st, 04, 01:00 AM
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Join Date: May 2001
Location: Ashby,MN, USA
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yes- it is a bit smaller- like 1/2" smaller. but this is just the excuse you needed to upgrade to the better alt, anyways.
there are 3 different case variations in the CS130 lineup- a straight across bolt pattern like the old style laternators we all grew up with, one with the threaded small hole offset to the "left" and one with the threaded hole offset to the "right" (as you look at it from the front). in either case, you can rotate the electrical plug to 3 different "clockings" by taking the 3 bolts that hold the case halves together and rotating the housing to get the plug pointing whichever direction you want.

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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