Need help with stock pulley setup - The 1947 - Present Chevrolet & GMC Truck Message Board Network

wesleytucker454 · 06-10-2022, 10:31 AM

So I’ve got a 1972 K20 with a 350 and power steering, but non A/C nor smog. Can someone tell me what pulleys I need to make everything line up and route correctly for a stock application (short water pump)? My current water pump pulley has 1 groove that doesn’t line up with anything on my crank.
Someone had put a later style engine in this truck and it had a whole mess of crazy bent up pulleys on it.
Thanks in advance.

**HO455** · 06-10-2022, 04:33 PM

I'm afraid I don't have the answer you need but, I will suggest you ask a moderator move your thread to the pick-up section where you will have far more people see it than you would here in the lonely Suburban section.

And maybe another photo of your alternator brackets.

Good luck.

**kwmech** · 06-10-2022, 05:20 PM

Contact--lolife99--he should be able to help you with the correct water pump pulley

wesleytucker454 · 06-10-2022, 06:07 PM

Quote:

Originally Posted by kwmech

Contact--lolife99--he should be able to help you with the correct water pump pulley

Thank you for the suggestion. I’ll reach out to him.

**lolife99** · 06-10-2022, 06:35 PM

Quote:

Originally Posted by wesleytucker454

Thank you for the suggestion. I’ll reach out to him.

Got your pm’s.
I think you have the wrong water pump pulley.
Which crank groove does your alternator line up with.

Here’s the setup on my truck.
It all came from a 1971 with a 350.

wesleytucker454 · 06-10-2022, 06:42 PM

Quote:

Originally Posted by lolife99

Got your pm’s.
I think you have the wrong water pump pulley.
Which crank groove does your alternator line up with.

Here’s the setup on my truck.
It all came from a 1971 with a 350.

My alternator pulley lines up perfectly with groove number 1 (closest to the crank).

wesleytucker454 · 06-10-2022, 06:06 PM

Quote:

Originally Posted by HO455

I'm afraid I don't have the answer you need but, I will suggest you ask a moderator move your thread to the pick-up section where you will have far more people see it than you would here in the lonely Suburban section.

And maybe another photo of your alternator brackets.

Good luck.

Haha thank you, I didn’t even realize I was in the suburban forum. I have too many projects and can’t keep any of them straight.

Thank you!

**lolife99** · 06-10-2022, 06:38 PM

I think your water pump pulley is from a “long water pump” set up.
(73-87 pulley)
The alternator should run on the groove closest to the crank.
The add-on crank pulley is p/s specific.

You need a deeper water pump pulley.

**lolife99** · 06-10-2022, 06:47 PM

I have a single groove water pump pulley, but it’s chrome.
I’m sure you could paint it black.
It should be about a 7” diameter pulley, 3” deep.
They sell them aftermarket.
Or I’d be glad to sell you my chrome one.
I’ve sold all my single water pump pulleys in bare steel.

**lolife99** · 06-10-2022, 07:24 PM

I do have this 2-groove waterpump pulley.
https://67-72chevytrucks.com/vboard/...d.php?t=835174

**richard2717** · 06-16-2022, 06:48 AM

here is a picture of my 72 K5 with small block no AC or smog. short pump with power steering as well as picture of part number stamped on the top water pump pulley

.

06-10-2022, 10:31 AM	#1
wesleytucker454 Registered User Join Date: Aug 2020 Location: Jacksonville, Arkansas Posts: 60	Need help with stock pulley setup So I’ve got a 1972 K20 with a 350 and power steering, but non A/C nor smog. Can someone tell me what pulleys I need to make everything line up and route correctly for a stock application (short water pump)? My current water pump pulley has 1 groove that doesn’t line up with anything on my crank. Someone had put a later style engine in this truck and it had a whole mess of crazy bent up pulleys on it. Thanks in advance. Attached Images __________________ -1972 Chevrolet K10 LWB Pickup -1972 Chevrolet K20 Pickup -1972 Chevrolet K10 Suburban ... and counting

06-10-2022, 04:33 PM	#2
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,370	Re: Need help with stock pulley setup I'm afraid I don't have the answer you need but, I will suggest you ask a moderator move your thread to the pick-up section where you will have far more people see it than you would here in the lonely Suburban section. And maybe another photo of your alternator brackets. Good luck. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

06-10-2022, 05:20 PM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,637	Re: Need help with stock pulley setup Contact--lolife99--he should be able to help you with the correct water pump pulley

06-10-2022, 06:38 PM	#8
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: Need help with stock pulley setup I think your water pump pulley is from a “long water pump” set up. (73-87 pulley) The alternator should run on the groove closest to the crank. The add-on crank pulley is p/s specific. You need a deeper water pump pulley. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

06-10-2022, 06:47 PM	#9
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: Need help with stock pulley setup I have a single groove water pump pulley, but it’s chrome. I’m sure you could paint it black. It should be about a 7” diameter pulley, 3” deep. They sell them aftermarket. Or I’d be glad to sell you my chrome one. I’ve sold all my single water pump pulleys in bare steel. Attached Images __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

06-10-2022, 07:24 PM	#10
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: Need help with stock pulley setup I do have this 2-groove waterpump pulley. https://67-72chevytrucks.com/vboard/...d.php?t=835174 __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

06-16-2022, 06:48 AM	#11
richard2717 Equal opportunity joke ofender Join Date: Oct 2011 Location: Eastern Shore of MD Posts: 10,130	Re: Need help with stock pulley setup here is a picture of my 72 K5 with small block no AC or smog. short pump with power steering as well as picture of part number stamped on the top water pump pulley . Attached Images __________________ Members I have met. Dually Jams, OlBlue60, ScottH, Tommyboy24, Dujobo, Warbucket, 2003 Silverado, Notsolo, my90k5, 6t727t2, Special-K ,Jack_71C10, tabarcus,72blazer_mud_bogger,pwdcougar,RSavage,EricSean,1Rippen6,invicta455,tennaragtop71,arks, Kendal,Bennett68C10, Perpendicular, Chainsawman, McGeesCustomMinis,ShortbedClayton,longblue72,6768chevylover,Tim71,Travisarmenta,Ol' Drippy,fleetmitch,georgieb51,Dave,bcnya2,Dadsburb https://paypal.me/6772GMtruckparts Most women like the strong, silent type… Fortunately for me, my wife prefers the out-of-shape, mouthy type.



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