![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
|
Dual waterpump and 3 crank pulleys
Just curious here as to what the 2nd groove on the water pump and the extra groove on the crank was used for.
Thanks
__________________
RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
![]() |
![]() |
![]() |
#2 |
Professional Grade
Join Date: May 2003
Location: Fort McMurray, Alberta
Posts: 7,915
|
With my 80 -- one belt goes around the alternator, waterpump, and crank, and another belt goes around the power steering pump, waterpump, and crank. I guess GM's thoughts were that if the belt on the alternator or power steering pump blew, they they still had another belt to keep the waterpump spinning so it didn't overheat or something.
__________________
1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) |
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Aug 2004
Location: North Carolina
Posts: 291
|
These are usually for A/C
|
![]() |
![]() |
![]() |
#4 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
|
Alternator- AC- Power Steering
__________________
I'm on the Instagram- @Gearhead_Kevin |
![]() |
![]() |
![]() |
#5 |
ran out of money
Join Date: Apr 2003
Location: northern, NJ
Posts: 925
|
correct me if i am wrong but if the crank pullies are all the same size and then the water pump has 2 different diamiters on it wont one belt slip or squeel while the other is spinning faster because of the different size? i might be totally wrong but just looking at that it doesnt make sense to me that u would have 2 belts going from the crank at say a 8 inch diamiter and then they go up to say a 7 inch and a 6 inch puley.... something seems as though it would have to give because one will spin fast the the other
maybe someone can shine light onto this for me if i am wrong Rat
__________________
Modify everything, leave nothing alone!~ ![]() ![]() |
![]() |
![]() |
![]() |
#6 |
14.1 @ 96MPH
Join Date: Jul 2001
Location: Mesa, AZ
Posts: 2,811
|
Yeah, that waterpump pulley doesn't look right to me. That said, on my '70 I actually have a four-groove crank pulley (two pieces). The very front one goes to the power steering pump only. Next to the front is unused. Next one back goes up to the waterpump (front groove) and over to the AC, and the very back one goes to the waterpump (rear groove) and over to the alternator.
__________________
Project1970 - LS1 Swap Complete! ![]() |
![]() |
![]() |
![]() |
Bookmarks |
|
|