SC pulley and belt specifics - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-29-2002, 03:29 AM   #1
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Default SC pulley and belt specifics

Lotsa posts around here on the subject, but I want it all in one package. 93 SSEi....what pulley size (I assume one size down?) is best to start with, do I need to change the belt, what is the best source/price for both of these parts, and what can I expect to gain (hp) or risk? Are the Series 1 harder to find parts for than the Series 2?

I'm also considering building a custom duct to force cold air over the top of the SC, 'cuz I'm not into frying eggs under my hood. If anyone else is interested when I get it done, I can post how to do it. I considered a hood scoop to help with this, but I'm not sure I wanna cut a cherry paint job.

Any help from the NA or Force-fed guys would be a help.
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Old 08-29-2002, 08:59 AM   #2
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Series I perfromacne parts are more difficult to find than Series II, yes. That still doesnt mean it cant be done. Your supercharger however is completely different than the newer motors. Newer L67'* have an Eaton M90, with is a big unit and comes with a 3.8" pulley stock. Most common size mod for them is a 3.4.

Your Supercharger is an Eaton M62, which is a much smaller unit, and in turn also has a much smaller pulley stock. Not sure what the size is of yours stock, and without that its hard to judge how much lower in size you really should go.

Can you measure your pulley sometime? Side-to-side?
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Old 08-29-2002, 11:33 AM   #3
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I got a '95 SSEi which is the last year for the series 1 */C motor. I measured my pulley a while ago and it looked to be a 3" pulley. I thought I had seen somewhere a 2.25" pulley for the M60 (series 1 */c). Just browse around the online performance shops or do some searching online and I am sure you can find it without too much trouble.
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Old 08-31-2002, 02:51 AM   #4
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Thanks, man. Finally found it. Probably the only one out there. scperformance.com has the pulley and belt......hang on, I'm going out to measure......

....a rough 3". It'* just a little under from rail to rail, but the flat pulley surface probably comes in at 3.75 - 3.5, which is right in line for the next step down to 2.25. With the succes of my CAI, I was thinking not to do it, but maybe I will now that I've seen it out there. Guess I better get my traction control and ABS working again. I'm gonna need it

Thanks for the help!
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Old 09-01-2002, 10:50 AM   #5
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Why is your traction control and ABS not working?
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Old 09-02-2002, 06:39 PM   #6
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Ooops, that pulley should have been 2.75-2.5.....ABS and traction are out right now, and it'* NOT a wheel speed sensor or the relay or fuse. That leaves the expensive crap, and the dealer wants 70 bucks just to diagnose. They have the reader to check it out, and nobody else does :(
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Old 09-02-2002, 06:47 PM   #7
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Both front wheel bearings been checked and replaced??
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Old 09-02-2002, 06:51 PM   #8
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I had (and still have) the same traction control problem. Mine turns off after a few minutes of driving but will stay on as long as two hours before turning off (road trips). I had it diagnosed right after I got the car and they said my main trac control unit is bad. They did stat that my ABS was still fully functional though and I agree with them on that because I can still tell when it engages. The unit I need is $700 for parts only. I've decided to leave it alone for now.
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Old 09-02-2002, 07:27 PM   #9
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Haven't checked the front wheel bearings since I cleaned my rotors and calipers about a month ago, but I wasn't looking for anything specific, anyway. The front sensors are packed in there with the bearings......is this where you're going
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