Part # verification - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Hart_Rod** · 08-07-2008, 01:42 PM

I've searched high and low and can't find it. The number is 3942992BA. It is supposed to be a double groove pulled for a BB short water pump. Thanks in advance.

r/

70rs/ss · 08-07-2008, 02:11 PM

Probably need to find a dealer with the old paper catalogs, that number has been discontinued I'd guess. I found a Dealer who had the catalogs and was able to get me the part numbers for the 68-71 BBC motor mount #'s and the bigged U-bolts that hold the lower A arms on, once you get that info, they usually show any superceeded numbers after that.

The other place is called obsolete chevy parts (but they $$$ because of the obsolete name!)

70rs/ss · 08-07-2008, 02:27 PM

Does it look like this?? It says they are stamped with the OE number, but they use the OPG # as the part #, but the pict??

1964-72 Reproduction Big Block Crank Pulleys

These are exact reproductions of the factory original big-block pulleys. The 1965-68 units are 2 groove crank pulleys for special high performance applications, while the 1969-72 3 groove pulleys are for cars with air conditioning.

Part No. Description Year Unit Sale Promo Qty Buy
CH26704 (R) 2-groove 65-68 EACH $51.45 $46.45

**Hart_Rod** · 08-07-2008, 02:29 PM

Thanks for the information. I have the part, I just want to make sure I'm listing it correctly in the for sale section.

R/

70rs/ss · 08-07-2008, 02:31 PM

I was thinking that is what you were doing, I added a pict as you were responding look at the pict, if it looks like that then Yep it is.

**Hart_Rod** · 08-07-2008, 02:32 PM

Quote:

Originally Posted by 70rs/ss

I was thinking that is what you were doing, I added a pict as you were responding look at the pict, if it looks like that then Yep it is.

Thats the crank pulley, do you have one of the water pump pulley?

70rs/ss · 08-07-2008, 02:35 PM

http://cgi.ebay.com/ebaymotors/Parts...m280228934851&

Well according to this ebay ad it is a 292 water pump pulley?? Check the link??

**Hart_Rod** · 08-07-2008, 02:39 PM

Quote:

Originally Posted by 70rs/ss

http://cgi.ebay.com/ebaymotors/Parts...m280228934851&

Well according to this ebay ad it is a 292 water pump pulley?? Check the link??

That's it! Thanks. It was bolted to a BBC short water pump. I wonder if they interchange?

R/

70rs/ss · 08-07-2008, 02:57 PM

The 6656 part says to be BBC pulley, but it looks like the one on the Ebay as well. I do not think they cross but not sure. Year one has them listed as V8 pulley (no BBC or SBC designation so maybe??) I wouldn't think one from a BBC would work on a 292, but maybe???

71 super · 08-07-2008, 11:04 PM

I know that sb pullies will work on short wp big blocks, the diameter is a little different but the pullies will interchange and will work- they line up correctly etc. so if you have a double upper pulley off of a a/c sb truck it can be used on a short water pump bb truck.

Rod · 08-09-2008, 01:39 PM

says 69-72 292 waterpump pulley without AC and lists with PS for 71-72 in my books.

**leddzepp** · 08-09-2008, 06:23 PM

I have had several 2 groove water pump pullies for BBC short water pump, all with different numbers. I researched a couple of the numbers and came up with an I6 application and others...but the pullies were IDENTICAL to each other otherwise. I am sure that there are several years that interchange.

08-07-2008, 01:42 PM	#1
Hart_Rod ************* Join Date: Apr 2005 Location: Pensacola, FL Posts: 17,837	Part # verification I've searched high and low and can't find it. The number is 3942992BA. It is supposed to be a double groove pulled for a BB short water pump. Thanks in advance. r/ __________________ Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 Last edited by Hart_Rod; 08-07-2008 at 01:43 PM.

08-07-2008, 02:11 PM	#2
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,271	Re: Part # verification Probably need to find a dealer with the old paper catalogs, that number has been discontinued I'd guess. I found a Dealer who had the catalogs and was able to get me the part numbers for the 68-71 BBC motor mount #'s and the bigged U-bolts that hold the lower A arms on, once you get that info, they usually show any superceeded numbers after that. The other place is called obsolete chevy parts (but they $$$ because of the obsolete name!)

08-07-2008, 02:27 PM	#3
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,271	Re: Part # verification Does it look like this?? It says they are stamped with the OE number, but they use the OPG # as the part #, but the pict?? 1964-72 Reproduction Big Block Crank Pulleys These are exact reproductions of the factory original big-block pulleys. The 1965-68 units are 2 groove crank pulleys for special high performance applications, while the 1969-72 3 groove pulleys are for cars with air conditioning. Part No. Description Year Unit Sale Promo Qty Buy CH26704 (R) 2-groove 65-68 EACH $51.45 $46.45 Attached Images Last edited by 70rs/ss; 08-07-2008 at 02:30 PM.

08-07-2008, 02:29 PM	#4
Hart_Rod ************* Join Date: Apr 2005 Location: Pensacola, FL Posts: 17,837	Re: Part # verification Thanks for the information. I have the part, I just want to make sure I'm listing it correctly in the for sale section. R/ __________________ Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3

08-07-2008, 02:31 PM	#5
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,271	Re: Part # verification I was thinking that is what you were doing, I added a pict as you were responding look at the pict, if it looks like that then Yep it is.

08-07-2008, 02:35 PM	#7
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,271	Re: Part # verification http://cgi.ebay.com/ebaymotors/Parts...m280228934851& Well according to this ebay ad it is a 292 water pump pulley?? Check the link??

08-07-2008, 02:57 PM	#9
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,271	Re: Part # verification The 6656 part says to be BBC pulley, but it looks like the one on the Ebay as well. I do not think they cross but not sure. Year one has them listed as V8 pulley (no BBC or SBC designation so maybe??) I wouldn't think one from a BBC would work on a 292, but maybe??? Attached Images

08-07-2008, 11:04 PM	#10
71 super Registered User Join Date: Sep 2005 Location: Canton North carolina Posts: 3,079	Re: Part # verification I know that sb pullies will work on short wp big blocks, the diameter is a little different but the pullies will interchange and will work- they line up correctly etc. so if you have a double upper pulley off of a a/c sb truck it can be used on a short water pump bb truck. __________________ 67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle

08-09-2008, 01:39 PM	#11
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Re: Part # verification says 69-72 292 waterpump pulley without AC and lists with PS for 71-72 in my books. __________________ 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.

08-09-2008, 06:23 PM	#12
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 19,995	Re: Part # verification I have had several 2 groove water pump pullies for BBC short water pump, all with different numbers. I researched a couple of the numbers and came up with an I6 application and others...but the pullies were IDENTICAL to each other otherwise. I am sure that there are several years that interchange.



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