3 Groove Cast Iron Water Pump Pulley Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**aotte1** · 11-21-2015, 09:09 PM

Need help to identify a 3 groove cast iron water pump pulley number 3868451. I believe the numbers to be correct, will confirm. Would like to know engine applications, along with years used. Photo below and more soon.

thanks for your help,
Les

**aotte1** · 11-21-2015, 09:35 PM

PGSigns just looked it up, and parts manual shows it to be for a 1965 292 I6 engine. It would be used with HD Cooling and A/C?

Looks similar to the ones used on the 283 and 327s. Any information on how they are different?

thanks,
Les

RANDY COX · 11-21-2015, 09:43 PM

Les it looks just like mine 3 groove, it's currently on the truck so I can't see the numbers...

**aotte1** · 11-21-2015, 11:01 PM

Randy,

Will post some more photos of it. What size belts are you using, it looks like it is deep groove.

Les

**aotte1** · 11-22-2015, 03:16 PM

Additional Photos of Pulley

**aotte1** · 11-22-2015, 03:18 PM

Last Photos

RANDY COX · 11-22-2015, 04:16 PM

Les I'm just running regular belts....

**60-66** · 11-22-2015, 08:02 PM

The parts books list it as 1965 292 which is correct but it was also used on 1966 292s with heavy duty cooling or 292 with AC and 283 327 with Air Conditioning. Heres my 66 with same pulley. Really not sure if 1964s were using it. I have four original examples but all are 1966.

**aotte1** · 11-22-2015, 11:19 PM

Randy,
Thanks for information on which size belts you are using.

60-66
Thanks for the pictures and information on this pulley.

One more question, which crank pulley is used with this water pump pulley, with A/C, power steering on 283/327 engine. ( am I correct to assume it was used 283/327 with A/C and PS). If easy, can you provide the number(s). Is it a 2 grove cast and stamped steel single next to balancer?

Thanks,
Les

**60-66** · 11-23-2015, 11:59 AM

Yes , stamped inner pulley and cast two groove. I believe the stamped pulley is common to cars with short water pump also but the 2 groove Cast pulley is either 3831397 superceded by 3876326 or 3747479 . These will get you close, I have not had the V8 pulley off this truck to confirm. I know there were other threads on this subject.

**aotte1** · 11-23-2015, 10:18 PM

60-66,

Thanks for the pulley information and photos.

I really like the original power steering in the photo too.

Les

11-21-2015, 09:09 PM	#1
aotte1 Senior Member Join Date: Oct 2013 Location: lousiville Ky Posts: 2,637	3 Groove Cast Iron Water Pump Pulley Help Need help to identify a 3 groove cast iron water pump pulley number 3868451. I believe the numbers to be correct, will confirm. Would like to know engine applications, along with years used. Photo below and more soon. thanks for your help, Les Attached Images Last edited by aotte1; 11-22-2015 at 11:24 PM.

11-21-2015, 09:35 PM	#2
aotte1 Senior Member Join Date: Oct 2013 Location: lousiville Ky Posts: 2,637	Re: 3 Groove Cast Iron Water Pump Pulley Help PGSigns just looked it up, and parts manual shows it to be for a 1965 292 I6 engine. It would be used with HD Cooling and A/C? Looks similar to the ones used on the 283 and 327s. Any information on how they are different? thanks, Les Attached Images Last edited by aotte1; 11-21-2015 at 09:41 PM.

11-21-2015, 09:43 PM	#3
RANDY COX Registered User Join Date: Mar 2001 Location: RADFORD, VA Posts: 2,651	Re: 3 Groove Cast Iron Water Pump Pulley Help Les it looks just like mine 3 groove, it's currently on the truck so I can't see the numbers... __________________ 1964 BBC 402 4x4

11-21-2015, 11:01 PM	#4
aotte1 Senior Member Join Date: Oct 2013 Location: lousiville Ky Posts: 2,637	Re: 3 Groove Cast Iron Water Pump Pulley Help Randy, Will post some more photos of it. What size belts are you using, it looks like it is deep groove. Les

11-22-2015, 03:16 PM	#5
aotte1 Senior Member Join Date: Oct 2013 Location: lousiville Ky Posts: 2,637	Re: 3 Groove Cast Iron Water Pump Pulley Help Additional Photos of Pulley Attached Images

11-22-2015, 03:18 PM	#6
aotte1 Senior Member Join Date: Oct 2013 Location: lousiville Ky Posts: 2,637	Re: 3 Groove Cast Iron Water Pump Pulley Help Last Photos Attached Images

11-22-2015, 04:16 PM	#7
RANDY COX Registered User Join Date: Mar 2001 Location: RADFORD, VA Posts: 2,651	Re: 3 Groove Cast Iron Water Pump Pulley Help Les I'm just running regular belts.... __________________ 1964 BBC 402 4x4

11-22-2015, 08:02 PM	#8
60-66 Registered User Join Date: Apr 2012 Location: Wisconsin Posts: 3,325	Re: 3 Groove Cast Iron Water Pump Pulley Help The parts books list it as 1965 292 which is correct but it was also used on 1966 292s with heavy duty cooling or 292 with AC and 283 327 with Air Conditioning. Heres my 66 with same pulley. Really not sure if 1964s were using it. I have four original examples but all are 1966. __________________ IS IT an EATON or Chevrolet rear axle https://67-72chevytrucks.com/vboard/...d.php?t=843778 The hubcap thread http://67-72chevytrucks.com/vboard/s...d.php?t=702839 WANTED : 1963-1966 6 Cylinder Fan Shroud WANTED :1964-1966 PANEL TRUCK

11-22-2015, 11:19 PM	#9
aotte1 Senior Member Join Date: Oct 2013 Location: lousiville Ky Posts: 2,637	Re: 3 Groove Cast Iron Water Pump Pulley Help Randy, Thanks for information on which size belts you are using. 60-66 Thanks for the pictures and information on this pulley. One more question, which crank pulley is used with this water pump pulley, with A/C, power steering on 283/327 engine. ( am I correct to assume it was used 283/327 with A/C and PS). If easy, can you provide the number(s). Is it a 2 grove cast and stamped steel single next to balancer? Thanks, Les Last edited by aotte1; 11-22-2015 at 11:30 PM.

11-23-2015, 11:59 AM	#10
60-66 Registered User Join Date: Apr 2012 Location: Wisconsin Posts: 3,325	Re: 3 Groove Cast Iron Water Pump Pulley Help Yes , stamped inner pulley and cast two groove. I believe the stamped pulley is common to cars with short water pump also but the 2 groove Cast pulley is either 3831397 superceded by 3876326 or 3747479 . These will get you close, I have not had the V8 pulley off this truck to confirm. I know there were other threads on this subject. __________________ IS IT an EATON or Chevrolet rear axle https://67-72chevytrucks.com/vboard/...d.php?t=843778 The hubcap thread http://67-72chevytrucks.com/vboard/s...d.php?t=702839 WANTED : 1963-1966 6 Cylinder Fan Shroud WANTED :1964-1966 PANEL TRUCK

11-23-2015, 10:18 PM	#11
aotte1 Senior Member Join Date: Oct 2013 Location: lousiville Ky Posts: 2,637	Re: 3 Groove Cast Iron Water Pump Pulley Help 60-66, Thanks for the pulley information and photos. I really like the original power steering in the photo too. Les



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