Extra pulley on crank and water pump? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Leviticus · 02-17-2010, 05:30 PM

Hey guys,

I have a 72 C10 with a 350, my crank pulley has a wobble and I need to replace it. The balancer is newer and spot on. But I have an extra pulley bolted to the front of my crank and water pump?

There is some type of mismatch going on here from the PO, what do you guys think I should do? Take a look at the pic, and let me know.

Thanks!

msgross · 02-17-2010, 05:36 PM

does it have a long or short water pump? almost looks like it needs a short if not... and maybe they added the power steering later?

Leviticus · 02-17-2010, 05:39 PM

Quote:

Originally Posted by msgross

does it have a long or short water pump? almost looks like it needs a short if not... and maybe they added the power steering later?

Not sure, how do you differentiate between the two?

cdowns · 02-17-2010, 06:05 PM

did they have air pumps in cali in 72?

BAGNDRAGIT · 02-17-2010, 06:06 PM

thats defiantly a long pump. see the gap between the timing cover and the back of the pump. on my motor the alt/water belt runs behind the p/s pulley.

i agree, it looks like it needs a short style pump.

Leviticus · 02-17-2010, 06:07 PM

I think maybe I have the long pump, and the alternator (passenger side) bolts to the water pump housing. and the power steering pump must be for a later model to line up with these pulleys.

But I am still confused, please take a look at the pic and let me know what you think I should do. I was planning on replacing the PS pump anyways cause its oldand ugly and is starting to make a little noise. I don't mind putting a short water pump in it, they are cheap.

But how do I get the alternator to line up? New brackets I guess, but did the alt come on the drivers side stock. If someone could give me some guidance on what parts to replace to get me back to stock I would be stoked.

msgross · 02-17-2010, 06:44 PM

maybe a few more pics from both sides will help...

Leviticus · 02-17-2010, 07:00 PM

Posted a different thread with better info and pics here:

http://67-72chevytrucks.com/vboard/s...d.php?t=387357

Sorry for the double post.

nplocoman · 02-17-2010, 08:03 PM

Looks like a short water pump my fix the problem. I am looking at my short pump now. It will move the puleys back.

Tx Firefighter · 02-17-2010, 08:05 PM

That's a long pump.

To convert to short you will need the pump, alternator brackets, water pump pulley and belts. The alternator is on the driver's side when running short water pump setup.

Leviticus · 02-17-2010, 09:32 PM

Problem solved, got a new OE GM complete serp setup for next to nothin on craigslist. Thanks for the replies guys! I was a lil stressed for a minute lol.

Willys47 · 02-18-2010, 12:30 AM

I think the pump on the serp system runs in the opposite rotation to the older belt drives water pumps

Leviticus · 02-18-2010, 12:40 AM

Quote:

Originally Posted by Willys47

I think the pump on the serp system runs in the opposite rotation to the older belt drives water pumps

Yeah, it came with new ps pump, water pump, ac pump pulleys etc so I am just going to need a reverse fan.

Thanks man.

68Stepbed · 02-18-2010, 12:46 PM

Sounds like a good time to install an electric fan.

02-17-2010, 05:30 PM	#1
Leviticus Shake and Bake! Join Date: Feb 2010 Location: Central Coast, CA Posts: 609	Extra pulley on crank and water pump? Hey guys, I have a 72 C10 with a 350, my crank pulley has a wobble and I need to replace it. The balancer is newer and spot on. But I have an extra pulley bolted to the front of my crank and water pump? There is some type of mismatch going on here from the PO, what do you guys think I should do? Take a look at the pic, and let me know. Thanks! __________________ "All tyranny needs to gain a foothold is for people of good conscience to remain silent." Thomas Jefferson "You are remembered for the rules you break." General Douglas MacArthur "Support Our Troops And The NRA"

02-17-2010, 05:36 PM	#2
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Extra pulley on crank and water pump? does it have a long or short water pump? almost looks like it needs a short if not... and maybe they added the power steering later? __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer"

02-17-2010, 06:05 PM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Extra pulley on crank and water pump? did they have air pumps in cali in 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

02-17-2010, 06:06 PM	#5
BAGNDRAGIT Just Not Low Enough! Join Date: Mar 2009 Location: Phoenix, AZ Posts: 525	Re: Extra pulley on crank and water pump? thats defiantly a long pump. see the gap between the timing cover and the back of the pump. on my motor the alt/water belt runs behind the p/s pulley. i agree, it looks like it needs a short style pump. __________________ NEED ELECTRICAL HELP? ASK ME! 67-72 Full Wiring Diagrams Lots Of Info, TAKE A LOOK 1967 Chevy C-10 Shortbox Bagged 327 4spd Previous: 1971 Chevy C-10 Short Sep I6 Auto (Traded) 1973 Chevy C-20 THE REDNECK BATTLE TRUCK 2001 Chevy Silverado 2Dr 5.3L Shortbox. R.I.P. 1969 Volkswagen Bug This is my first meeting, I have a horsepower problem.

02-17-2010, 06:07 PM	#6
Leviticus Shake and Bake! Join Date: Feb 2010 Location: Central Coast, CA Posts: 609	Re: Extra pulley on crank and water pump? I think maybe I have the long pump, and the alternator (passenger side) bolts to the water pump housing. and the power steering pump must be for a later model to line up with these pulleys. But I am still confused, please take a look at the pic and let me know what you think I should do. I was planning on replacing the PS pump anyways cause its oldand ugly and is starting to make a little noise. I don't mind putting a short water pump in it, they are cheap. But how do I get the alternator to line up? New brackets I guess, but did the alt come on the drivers side stock. If someone could give me some guidance on what parts to replace to get me back to stock I would be stoked. __________________ "All tyranny needs to gain a foothold is for people of good conscience to remain silent." Thomas Jefferson "You are remembered for the rules you break." General Douglas MacArthur "Support Our Troops And The NRA"

02-17-2010, 06:44 PM	#7
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Extra pulley on crank and water pump? maybe a few more pics from both sides will help... __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer"

02-17-2010, 07:00 PM	#8
Leviticus Shake and Bake! Join Date: Feb 2010 Location: Central Coast, CA Posts: 609	Re: Extra pulley on crank and water pump? Posted a different thread with better info and pics here: http://67-72chevytrucks.com/vboard/s...d.php?t=387357 Sorry for the double post. __________________ "All tyranny needs to gain a foothold is for people of good conscience to remain silent." Thomas Jefferson "You are remembered for the rules you break." General Douglas MacArthur "Support Our Troops And The NRA"

02-17-2010, 08:03 PM	#9
nplocoman never finish start another Join Date: Mar 2007 Location: North Platte Nebraska Posts: 432	Re: Extra pulley on crank and water pump? Looks like a short water pump my fix the problem. I am looking at my short pump now. It will move the puleys back.

02-17-2010, 08:05 PM	#10
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Extra pulley on crank and water pump? That's a long pump. To convert to short you will need the pump, alternator brackets, water pump pulley and belts. The alternator is on the driver's side when running short water pump setup. __________________ I'm on the Instagram- @Gearhead_Kevin

02-17-2010, 09:32 PM	#11
Leviticus Shake and Bake! Join Date: Feb 2010 Location: Central Coast, CA Posts: 609	Re: Extra pulley on crank and water pump? Problem solved, got a new OE GM complete serp setup for next to nothin on craigslist. Thanks for the replies guys! I was a lil stressed for a minute lol. __________________ "All tyranny needs to gain a foothold is for people of good conscience to remain silent." Thomas Jefferson "You are remembered for the rules you break." General Douglas MacArthur "Support Our Troops And The NRA"

02-18-2010, 12:30 AM	#12
Willys47 Registered User Join Date: Dec 2007 Location: Nanaimo B.C. Posts: 604	Re: Extra pulley on crank and water pump? I think the pump on the serp system runs in the opposite rotation to the older belt drives water pumps __________________ I was hooked on these trucks since 1982 when I drove my budys fathers 1968 Custum GMC 396 automatic dana 60 rear with a power lock diff what a ride more fun then we will we can ever tell!! Last edited by Willys47; 02-18-2010 at 12:30 AM.

02-18-2010, 12:46 PM	#14
68Stepbed Registered User Join Date: Mar 2005 Location: 10-Uh-See Posts: 5,609	Re: Extra pulley on crank and water pump? Sounds like a good time to install an electric fan. __________________ Matt 68 C10 stepside, LS1/700R4, TCI Engineering suspension system

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