Long or short water pump? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

David Johnson · 11-12-2007, 05:51 PM

Does a 70 blazer/truck with a 350 have a long or short water pump. Does anyone have a picture of a stock set up?

Tx Firefighter · 11-12-2007, 06:16 PM

Stock was short pump.

19673ontree · 11-12-2007, 07:19 PM

short water pump was used from 1955 to 1967 along with the canister type oil filter and small journal size crankshaft's , in 1968 they went to a spin on oil filter long waterpump and big journal crank , so the correct answer for a 1970 350 is it came from the factory with the long waterpump ,

cdowns · 11-12-2007, 07:41 PM

they used short pumps till after 72

**john** · 11-12-2007, 07:43 PM

Quote:

Originally Posted by 19673ontree

short water pump was used from 1955 to 1967 along with the canister type oil filter and small journal size crankshaft's , in 1968 they went to a spin on oil filter long waterpump and big journal crank , so the correct answer for a 1970 350 is it came from the factory with the long waterpump ,

That was for cars only not trucks. Trucks short through 1972.

Tx Firefighter · 11-12-2007, 07:47 PM

Yep, trucks are a different animal than cars. 73 was the changover year for us truck guys.

19673ontree · 11-12-2007, 08:53 PM

I sure did not know that !! wow that is strange , a short waterpump on a chevy v8 after 68 cool !!!!!!!!!!!!

67_C-30 · 11-12-2007, 09:01 PM

Quote:

Originally Posted by 19673ontree

I sure did not know that !! wow that is strange , a short waterpump on a chevy v8 after 68 cool !!!!!!!!!!!!

GM was always a little behind on trucks because back then more of a commercial use vehicle than they are now. Cutting edge technology was less of a concern for most trucks buyers, and GM took measures to keep the reputation of their trucks as being very reliable. It's the same reason that while '67 model cars got 350's as option, they waited until '68 to put them in trucks. The short water pump set-up was tried and true and they probably wanted to field test them in cars first.

Longhorn Man · 11-12-2007, 10:32 PM

trucks didn't get 350s till 69 actually.
The vette used the short pump for quite a few years after the trucks stopped using them.

72armyswbtruck · 11-12-2007, 10:59 PM

Quote:

Originally Posted by Longhorn Man

trucks didn't get 350s till 69 actually.
The vette used the short pump for quite a few years after the trucks stopped using them.

Right on the money about that one, I love my dealer option brochures

11-12-2007, 05:51 PM	#1
David Johnson Registered User Join Date: Dec 2004 Location: Shawnee, OK Posts: 614	Long or short water pump? Does a 70 blazer/truck with a 350 have a long or short water pump. Does anyone have a picture of a stock set up?

11-12-2007, 06:16 PM	#2
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Long or short water pump? Stock was short pump. __________________ I'm on the Instagram- @Gearhead_Kevin

11-12-2007, 07:19 PM	#3
19673ontree CAN'T FIX NOTHIN Join Date: Sep 2006 Location: SOUTHRUST VIRGINIA !!! Posts: 2,112	Re: Long or short water pump? short water pump was used from 1955 to 1967 along with the canister type oil filter and small journal size crankshaft's , in 1968 they went to a spin on oil filter long waterpump and big journal crank , so the correct answer for a 1970 350 is it came from the factory with the long waterpump , __________________ 1967 C10 Shortbed Fleetside Small back glass 6 cyl 3spd on the tree 3.08 gears underdash AC

11-12-2007, 07:41 PM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Long or short water pump? they used short pumps till after 72 __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

11-12-2007, 07:47 PM	#6
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Long or short water pump? Yep, trucks are a different animal than cars. 73 was the changover year for us truck guys. __________________ I'm on the Instagram- @Gearhead_Kevin

11-12-2007, 08:53 PM	#7
19673ontree CAN'T FIX NOTHIN Join Date: Sep 2006 Location: SOUTHRUST VIRGINIA !!! Posts: 2,112	Re: Long or short water pump? I sure did not know that !! wow that is strange , a short waterpump on a chevy v8 after 68 cool !!!!!!!!!!!! __________________ 1967 C10 Shortbed Fleetside Small back glass 6 cyl 3spd on the tree 3.08 gears underdash AC

11-12-2007, 10:32 PM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Long or short water pump? trucks didn't get 350s till 69 actually. The vette used the short pump for quite a few years after the trucks stopped using them.



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