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#1 |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Crank pulleys.
What are you running for crank pulleys? The one on my truck was added after the PO put power steering on. it’s not inline with the water pump & alt.
I went to the wrecking yard looking for something but didn’t find anything. Anyone have suggestions? It needs to be a 3 grove to work. ![]() s/t
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#2 |
Registered User
![]() Join Date: Jan 2007
Location: Fairview, ks
Posts: 203
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Re: Crank pulleys.
I think Summit sells crank pulley shims.
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#3 | |
OLD FART(I GUESS)
Join Date: Jul 2005
Location: catoosa, okla
Posts: 58
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Re: Crank pulleys.
Quote:
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1967 Shorty Stepside 1967 Shorty Fleet 1967 3/4 Fleet LB 1972 LB Fleet ....RAP IS TO MUSIC WHAT ETCH A SKETCH IS TO ART.... |
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#4 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Crank pulleys.
^Yep. I ran into this problem when adding my vintage air set-up.
Basically, the groove closest to the balancer should be AGAINST the balancer if you have a short water pump set up (which is what you would want if you have factory power steering). If your pulley groove closest to the balancer is about an 1" away from the balancer, it's for a long water pump. This is a pic of a long water pump set up. The second is hard to see, but my new SWP set up, the pulley groove is against the balancer.
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 10-04-2007 at 10:40 AM. |
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#5 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Crank pulleys.
Also, the third groove is kind of an add on. Trucks that came with the two groove pulley had the power steering pulling is an add on that goes over and inside the two groove pully (at least the ones I've seen have).
You're probably having a hard time finding the pulley at a yard because all 73+ trucks used a long water pump. You'd need to find an original swp set up.... or go to Jegs or ebay...
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 10-04-2007 at 10:46 AM. |
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#6 | |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: Crank pulleys.
Quote:
Scan the parts board. People jump fast on AC brackets when somebody posts that they are parting an AC truck. After that dust settles ask if you can buy the crank pulleys. You may as well get the waterpump pulley too. That way you know you got a matched set.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#7 |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Crank pulleys.
It’s a short water pump & the pulley is against the Harmonic balancer. The first grove needs to be 5/8inch from the face of the harmonic balancer to match the water pump pulley.
Can someone double check this measurement for me? If I shim this out I’m concerned that it will throw off my power steering alignment. I’ll get a picture up tonight. Thanks. s/t
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#8 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Crank pulleys.
Is it possible you have the wrong water pump pulley? Does it look like the one in my second pic?
Does your truck have A/C? Is the upper pulley single groove or double? Is your power steering off a 73+ truck or 68-72?
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 10-04-2007 at 01:15 PM. |
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#9 |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Crank pulleys.
It’s a single pulley water pump pulley and it seems original. I’m sure the only thing that was changed was the bottom pulley, to accommodate the power steering. I don’t know what the power steering is off of, but the brackets that were used for the power steering pump were incorrect. I have the correct ones now. I plan on replacing the pump before I get this on the road. I can specify for a correct pump then. What should I ask for? (The engine is out at the moment)
s/t
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#10 |
Registered User
Join Date: Jul 2006
Location: Fair Oaks, CA
Posts: 475
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Re: Crank pulleys.
Not the best pic but I used all the 76 and newer brackets and accesorys and everything lined up even being bolted to the older style harmonic damper
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1968 Short Fleet 350/700r4 http://67-72chevytrucks.com/vboard/s...d.php?t=249435 1997 Bagged XtdCab Vortec350/4L60e http://67-72chevytrucks.com/vboard/s...44#post2286144 1993 XtdCab Longbed 4x4 6.5Turbo/NV4500 "Daily Driver" 1985 Toyota XtdCab 4x4 22re/W-56/Dual T-cases, Doug Thorley Header, Homebrew front and rear spring packs, Tons of Mods to suspension and drivetrain, 35" boggers, coming soon ARB's and 5.29's, Possible 4.3/700r4 swap |
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#11 |
Registered User
Join Date: Jul 2006
Location: Fair Oaks, CA
Posts: 475
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Re: Crank pulleys.
It sounds like the crank pulley was designed for use with the long style pump
If you dont mind paying for shipping I'll give you my original pulleys (what I have left)
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1968 Short Fleet 350/700r4 http://67-72chevytrucks.com/vboard/s...d.php?t=249435 1997 Bagged XtdCab Vortec350/4L60e http://67-72chevytrucks.com/vboard/s...44#post2286144 1993 XtdCab Longbed 4x4 6.5Turbo/NV4500 "Daily Driver" 1985 Toyota XtdCab 4x4 22re/W-56/Dual T-cases, Doug Thorley Header, Homebrew front and rear spring packs, Tons of Mods to suspension and drivetrain, 35" boggers, coming soon ARB's and 5.29's, Possible 4.3/700r4 swap Last edited by Scott68-93-97; 10-04-2007 at 03:46 PM. |
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#12 | |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Crank pulleys.
Quote:
Thanks for the offer Scott, I don’t mind paying and may just take you up on the offer. But can you measure from your Harmonic Balancer to the middle of your first belt? BTW- I thought the inner most pulley is for the alternator? Maybe this has something to do with your alternator being on the Passenger side? s/t
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#13 |
Registered User
Join Date: Jun 2007
Location: oregon
Posts: 1,069
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Re: Crank pulleys.
I am in the same boat. I posted about stock pulley set up. I am probably going to the yard soon to scrounge stuff up. Could end up going Summit.
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#14 |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Crank pulleys.
Here is my setup, anyone else have a good picture of what they are using?
s/t
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#15 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Crank pulleys.
S/T, that seems to be the correct pulley. It sounds like you may have the wrong wp pulley and some mismatched brackets. I'll post some pics as soon as I can start posting pics again.
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#16 | |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Crank pulleys.
Quote:
s/t You'll need to delete you pictures to get them down to the new limit.
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#17 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Crank pulleys.
Here are some pics of my old setup. I had the 2-groove crank pulley instead of three, but you can see how they line up. The swp crank pulleys were actually a 2 peice design if you have power steering. All brackets and pulleys are stock GM peices. Do you have any more pics of your setup?
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#18 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Crank pulleys.
One more.
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#19 |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Crank pulleys.
thanks, Matt that is exactly what I need. I have some pictures of my old pulley system, but it was nothing near correct. I have all the
original brackets now. s/t
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#20 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Crank pulleys.
Glad I could help. If you need any more help or any parts, let me know. I've done been through this battle, so I'm willing to help in any way possible.
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#21 | |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Crank pulleys.
Quote:
This would help me determine if the water pump pulley is correct. s/t
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. ![]() |
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#22 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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Re: Crank pulleys.
Just curious but what kind of belts are those?
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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 |
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#23 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Crank pulleys.
I don't remember the name, but they look just like mine and I got them from Advance
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 10-05-2007 at 11:47 AM. |
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#24 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Crank pulleys.
S/T here's my setup now. It should help to see what you need. I have a 2-groove wp pulley for a short water pump and a 3-groove crank pulley. My old setup in the pictures above were taken before the restoration. I had(I believe) a 2-groove wp pulley and a 2-groove crank pulley. The crank pulley had two peices. The crank pulley that turned the Water pump and alt. was directly aginst the balancer. The second piece of the crank pulley was basically an add on extension to work the power steering. Your crank pulley has three grooves. The one directly against the balancer should drive the wp and alt. The middle groove will be for A/C if you have it. The outside should drive the p/s.
I wouldn't be able to tell if you have the correct wp pulley just by seeing it. I'll try to check my old pulley in a little while to get dimensions for you. I'll try to see how long and deep the wp pulley should be. The oulley is at my dad's place, so I'll have to check it in a few minutes. Meanwhile, here some of my current setup. They are Dayco TOP COG. They are the only kind of V-belt I will buy. Don't buy cheap stuff. You get what you pay for. My brother learned this lesson with his truck. He went to Auto Zone and told them he needed new belts. They automatically gave him the cheap ones. They haven't stopped squealing after a year.
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#25 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Crank pulleys.
You can also check out Alan Grove. They have all dimensions listed on their site so you can determine what you need.
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