6066 (1960-1966) GMC Truck Club Bitcoin now accepted here! 
Pay Dues
Pay Dues or become a Site Supporter
 



Go Back   6066 (1960-1966) GMC Truck Club > 6066 GMC Truck Club Forum > General Discussion


General Discussion Sit down and chat with fellow members! Any topics that don't fit other categories goes here.

Reply
 
Thread Tools
  #31  
Old March 8th, 2023, 01:39 PM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 478 V6, SM420
Posts: 386
Rep Power: 183
Prowbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the rough
Default Re: V6 water pumps getting hard to find

Quote:
Originally Posted by LEWISMATKIN View Post
the pontiac impeller has somewhat taller blades, they are shorter in length, and are turned the opposite direction than the GMC pump. the pontiac impeller also has 3 large holes that surround the hub of the impeller.
Opposite direction? Rotation-wise or the way it pumps inside? The vanes face the same direction for the GMC and Pontiac pump?
Reply With Quote
  #32  
Old March 13th, 2023, 07:38 PM
BobBray BobBray is offline
-= Dues Paid =-
 
Join Date: Feb 2013
Location: Los Angeles, CA.
Truck: 1967 CM 2500
Posts: 246
Rep Power: 149
BobBray will become famous soon enoughBobBray will become famous soon enough
Default Re: V6 water pumps getting hard to find

Pontiac V-8's up to 1959 had reverse-flow cooling, maybe that explains the different impeller:

http://www.pontiacsafari.com/EngineCooling/
Reply With Quote
  #33  
Old March 14th, 2023, 08:01 AM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 478 V6, SM420
Posts: 386
Rep Power: 183
Prowbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the rough
Default Re: V6 water pumps getting hard to find

Interesting. Though the aftermarket water pump (GMB 1302835) I bought from Rockauto for a 1963 Pontiac Tempest with the 326ci V8 (which is past 1960, so the correct cooling system) is the suitable water pump for a light-duty V6. Vanes face the same way, and it is a direct bolt-in.
Reply With Quote
  #34  
Old March 15th, 2023, 05:09 AM
BobBray BobBray is offline
-= Dues Paid =-
 
Join Date: Feb 2013
Location: Los Angeles, CA.
Truck: 1967 CM 2500
Posts: 246
Rep Power: 149
BobBray will become famous soon enoughBobBray will become famous soon enough
Default Re: V6 water pumps getting hard to find

BTW, Summit Racing has the GNB 130-2835's back in stock.
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
water pumps Archiver Previous Forum Posts 0 November 16th, 2004 02:08 AM
Re: [6066 GMC Truck] QUICK POLL: 305 vs 350 (V6 Parts hard top find????????) Archiver Previous Forum Posts 0 December 29th, 2003 12:20 AM
Re: [6066 GMC Truck] QUICK POLL: 305 vs 350 (V6 Parts hard top find????????) Archiver Previous Forum Posts 0 December 29th, 2003 12:07 AM
Re: [6066 GMC Truck] QUICK POLL: 305 vs 350 (V6 Parts hard top find????????) Archiver Previous Forum Posts 0 December 28th, 2003 12:43 AM
Re: [6066 GMC Truck] QUICK POLL: 305 vs 350 (V6 Parts hard top find????????) Archiver Previous Forum Posts 0 December 28th, 2003 12:02 AM


All times are GMT +1. The time now is 08:05 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd 481713359920|1712343942|0