Urgently needed: BB pulley part #'s - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**CPNE** · 05-28-2003, 08:36 PM

I need the part numbers for the crank pulleys on a 72 402BB. This would be the 3 groove pulleys for A/C, PS, and alternator belts. Also, the 2 groove pulleys for non-A/C BB trucks.

The reason: The machine shop where the 402 is being rebuilt has misplaced them (don't ask, looooong story)

. I want to give them the #'s so they can find them in their mess, or order me a replacement set.

I'm sure someone can help me. Rod? Anybody?

Thanks.

Big69C20 Toy · 05-28-2003, 08:42 PM

I dunno the numbers but you can find them in about ANY aftermarket pulley company.. march, zoops, alan grove stuff like that. That and of course the normal 'off' brand chromed ones.

If you're talking Numbers matching pulleys (dunno if the even counts as i'm not a huge resto guy) then i'm clueless sorry.

**CPNE** · 05-28-2003, 09:00 PM

Does anybody know for sure if the aftermarket pulleys are designed to work with the stock brackets? I don't care about #'s matching, but I do want them to find my originals or replace with CORRECT replacements.

So thanks for the info, I guess I need GM part #'s or suitable aftermarket info.

Rod · 05-28-2003, 10:17 PM

double groove BB with air is 69-72 stamped and part number is 3874414

The single groove for the PS is 3925525 for 68-72.

I just listed the BB crank pullies, is that all you want.

BB no air double crank pulley is 3874418 , stamped the same for 69-72.

**CPNE** · 05-29-2003, 06:57 AM

Thanks!

05-28-2003, 08:36 PM	#1
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	Urgently needed: BB pulley part #'s I need the part numbers for the crank pulleys on a 72 402BB. This would be the 3 groove pulleys for A/C, PS, and alternator belts. Also, the 2 groove pulleys for non-A/C BB trucks. The reason: The machine shop where the 402 is being rebuilt has misplaced them (don't ask, looooong story) . I want to give them the #'s so they can find them in their mess, or order me a replacement set. I'm sure someone can help me. Rod? Anybody? Thanks. __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

05-28-2003, 08:42 PM	#2
Big69C20 Toy Livin' it up. Join Date: Nov 2001 Location: Richland, MI Posts: 2,212	I dunno the numbers but you can find them in about ANY aftermarket pulley company.. march, zoops, alan grove stuff like that. That and of course the normal 'off' brand chromed ones. If you're talking Numbers matching pulleys (dunno if the even counts as i'm not a huge resto guy) then i'm clueless sorry. __________________ -Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires.

05-28-2003, 09:00 PM	#3
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	Does anybody know for sure if the aftermarket pulleys are designed to work with the stock brackets? I don't care about #'s matching, but I do want them to find my originals or replace with CORRECT replacements. So thanks for the info, I guess I need GM part #'s or suitable aftermarket info. __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

05-28-2003, 10:17 PM	#4
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	double groove BB with air is 69-72 stamped and part number is 3874414 The single groove for the PS is 3925525 for 68-72. I just listed the BB crank pullies, is that all you want. BB no air double crank pulley is 3874418 , stamped the same for 69-72. __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

05-29-2003, 06:57 AM	#5
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	Thanks! __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

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