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  • 7 Post By grabowski
  • 1 Post By Freddyack
  • 1 Post By racerCharlie

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Old 03-05-2015, 07:00 PM   #1 (permalink)
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Alternator Pulley Stuff.

My local Chevy dealer was able to pull up the 6.5 alternator pulley part number.

#01989104 AKA #19891040

Outside Diameter: 66.7mm / 2.626in
Inside Diameter: 17mm / 0.669in
Overall Thickness: 32.3mm / 1.272in
Serpentine Grooves OD: 62mm / 2.441in
Grooves: 6
Nut Recess Depth: 17.8mm / 0.701in
Center of Rear Groove to Rear of Pulley: 9.9mm / 0.39in

The highest recommendations are in Bold below
1985 GMC 6.2 manual 4x4 3/4+ton 64,013 miles (5-1-19)
The Blowby Queen '94 Chevy 'burb Silverado K2500 4L80E 4.10. Quadstar Tuning.
Midland Diesel Las Vegas Diesel rebuilt 5221 Blue Label IP with ULSD Upgrade & rebuilt Bosch injectors @ 2200psi. 235-85 on 16" PYO alloys. Bilstein HDs, Hellwig rear sway bar. Heath TM. Fluidampr. S&B oiled filter Intake, Provent 200 W/catchcan. Bosch Duraterm GP W/PT Solutions GP harness. WJ FTB. AC Delco Tstat & Red Line Water Wetter. hxtasy PMD #2 resistor on Heath Isolator 4. LS 1/2" oil cooler & lines. OPS Relay Mod & Leroys Hose. Diamond Eye exhaust. Heath 2.5" crossover. W/T Grille. VDO EGT & Vac/Boost gauge with copper line & Leroys Boost Bolt.

- 12-13-16 Out Of Commission @ 194,680k, 50 miles after Teds Mil Takeout Install. Bad noises in the motor.
- 12-29-16 #7 lifters and pushrods replaced and still sounds like a metal trash can half full of hammers rolling down a scree field.
- 03-01-17 @ 194,802 miles she's no longer mine.

12-28-2016: I no longer recommend Badger/kr_services and Ted's Trucks
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Old 03-05-2015, 09:57 PM   #2 (permalink)
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Added to 6.5L Parts List and FAQs

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Old 03-05-2015, 10:42 PM   #3 (permalink)
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Thanks, Grabowski! I just bought one on-line thanks to your help. I have a smaller than typical gasser pulley (2 3/16 flange to flange as opposed to the typical incorrect gasser 2 3/8" pulley). The indicated rpm's are driving me nuts. To say nothing of the belt tensioner range limitations.
1994 C3500 6.5td Dually F code long bed, 75,000 mi on goodwrench engine,injectors and gp's. Factory tank and sock less than 30,000 mi. IP,lift pump,pmd less than 2000 mi., original exhaust (20 yrs old!-soon to be upgraded). 4:10 locker. Vacuum delete, Heath TM, Transfer Flow in bed tank gives an extra 100 gallons, all else GM. Race car hauler, sleeps off season. Chassis = 180,000 mi. No rust, some trust.
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Old 03-06-2015, 05:35 PM   #4 (permalink)
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Nice. I have some measurements to take.
81 Chevette 1.8 Isuzu diesel 24,000 miles
82 Park Ave. 5.7 DX Stock with Stanadyne FWS and Filtermag
81 Riviera 5.7 Donor vehicle for The 82 Park Ave Compliments of 57Diesel
82 C10 2WD 6.2 Parts Truck
91 Suburban 2500 4x4 6.2 Bad Transmission
85 Cadillac Deville factory 4.3 Oldsmobile Diesel
91 GMC Sierra K1500 6.2 NA Bad Transmission
94 K3500 CC DRW 6.5TD All the normal stuff done. DE exhaust Custom Parker Racor Rust free beauty
Originally Posted by smackzed View Post
my guess would be shocks
Originally Posted by alpacalips View Post
Even the guys who own them aren't 5.7 guys.
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