The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-03-2007, 09:24 PM   #1
Sport/Truck
Sierra Grande Club
 
Sport/Truck's Avatar
 
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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
__________________
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.
Sport/Truck is offline   Reply With Quote
Old 10-04-2007, 10:06 AM   #2
hyarbour
Registered User
 
Join Date: Jan 2007
Location: Fairview, ks
Posts: 203
Re: Crank pulleys.

I think Summit sells crank pulley shims.
hyarbour is offline   Reply With Quote
Old 10-04-2007, 10:23 AM   #3
k2c1959
OLD FART(I GUESS)
 
k2c1959's Avatar
 
Join Date: Jul 2005
Location: catoosa, okla
Posts: 58
Re: Crank pulleys.

Quote:
Originally Posted by Sport/Truck View Post
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
you probably have the wrong pulley, depending on if you have a short shaft or long shaft on your water pump. I have a 79 350 in my 67 and i bought an aftermarket 3 groove billet crank pulley and everything lined up fine. just made sure it was for a long water pump.
__________________
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....
k2c1959 is offline   Reply With Quote
Old 10-04-2007, 10:38 AM   #4
67ChevyRedneck
Hittin E-Z Street on Mud Tires
 
67ChevyRedneck's Avatar
 
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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.
Attached Images
  
__________________
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.
67ChevyRedneck is offline   Reply With Quote
Old 10-04-2007, 10:43 AM   #5
67ChevyRedneck
Hittin E-Z Street on Mud Tires
 
67ChevyRedneck's Avatar
 
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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...
__________________
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.
67ChevyRedneck is offline   Reply With Quote
Old 10-04-2007, 01:08 PM   #6
mrein3
Registered User
 
mrein3's Avatar
 
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
Re: Crank pulleys.

Quote:
Originally Posted by 67ChevyRedneck View Post
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...
Amen! I had a heck of a time with the pulleys the PO stuck on my truck. I kept snapping alternator mount bolts. I never got it straightened out until da-burb sold me a crank pulley off of an original setup.

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.
__________________
'70 cab, '71 chassis, 383, TH350, NP205.
'71 Malibu convertible
'72 Malibu hard top
Center City, MN
mrein3 is offline   Reply With Quote
Old 10-04-2007, 01:08 PM   #7
Sport/Truck
Sierra Grande Club
 
Sport/Truck's Avatar
 
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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
__________________
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.
Sport/Truck is offline   Reply With Quote
Old 10-04-2007, 01:15 PM   #8
67ChevyRedneck
Hittin E-Z Street on Mud Tires
 
67ChevyRedneck's Avatar
 
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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?
__________________
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.
67ChevyRedneck is offline   Reply With Quote
Old 10-04-2007, 03:31 PM   #9
Sport/Truck
Sierra Grande Club
 
Sport/Truck's Avatar
 
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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
__________________
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.
Sport/Truck is offline   Reply With Quote
Old 10-04-2007, 03:43 PM   #10
Scott68-93-97
Registered User
 
Scott68-93-97's Avatar
 
Join Date: Jul 2006
Location: Fair Oaks, CA
Posts: 475
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 damperName:  6-20-07 003.jpg
Views: 514
Size:  76.5 KB
__________________
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
Scott68-93-97 is offline   Reply With Quote
Old 10-04-2007, 03:45 PM   #11
Scott68-93-97
Registered User
 
Scott68-93-97's Avatar
 
Join Date: Jul 2006
Location: Fair Oaks, CA
Posts: 475
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)
__________________
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.
Scott68-93-97 is offline   Reply With Quote
Old 10-04-2007, 04:17 PM   #12
Sport/Truck
Sierra Grande Club
 
Sport/Truck's Avatar
 
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
Re: Crank pulleys.

Quote:
Originally Posted by Scott68-93-97 View Post
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)

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.
Sport/Truck is offline   Reply With Quote
Old 10-04-2007, 04:41 PM   #13
prg machine
Registered User
 
prg machine's Avatar
 
Join Date: Jun 2007
Location: oregon
Posts: 1,069
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.
prg machine is offline   Reply With Quote
Old 10-04-2007, 08:16 PM   #14
Sport/Truck
Sierra Grande Club
 
Sport/Truck's Avatar
 
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
Re: Crank pulleys.

Here is my setup, anyone else have a good picture of what they are using?
s/t
Attached Images
    
__________________
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.
Sport/Truck is offline   Reply With Quote
Old 10-04-2007, 10:48 PM   #15
68Stepbed
Registered User
 
68Stepbed's Avatar
 
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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.
__________________
Matt

68 C10 stepside, LS1/700R4, TCI Engineering suspension system
68Stepbed is offline   Reply With Quote
Old 10-04-2007, 11:20 PM   #16
Sport/Truck
Sierra Grande Club
 
Sport/Truck's Avatar
 
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
Re: Crank pulleys.

Quote:
Originally Posted by 68Stepbed View Post
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.
If the water pump pulley was back any further it will rub on the water pump.
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.
Sport/Truck is offline   Reply With Quote
Old 10-04-2007, 11:48 PM   #17
68Stepbed
Registered User
 
68Stepbed's Avatar
 
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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?
Attached Images
     
__________________
Matt

68 C10 stepside, LS1/700R4, TCI Engineering suspension system
68Stepbed is offline   Reply With Quote
Old 10-04-2007, 11:49 PM   #18
68Stepbed
Registered User
 
68Stepbed's Avatar
 
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
Re: Crank pulleys.

One more.
Attached Images
 
__________________
Matt

68 C10 stepside, LS1/700R4, TCI Engineering suspension system
68Stepbed is offline   Reply With Quote
Old 10-05-2007, 06:54 AM   #19
Sport/Truck
Sierra Grande Club
 
Sport/Truck's Avatar
 
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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.
Sport/Truck is offline   Reply With Quote
Old 10-05-2007, 10:24 AM   #20
68Stepbed
Registered User
 
68Stepbed's Avatar
 
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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.
__________________
Matt

68 C10 stepside, LS1/700R4, TCI Engineering suspension system
68Stepbed is offline   Reply With Quote
Old 10-05-2007, 11:05 AM   #21
Sport/Truck
Sierra Grande Club
 
Sport/Truck's Avatar
 
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
Re: Crank pulleys.

Quote:
Originally Posted by 68Stepbed View Post
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.
Is your first belt (center) 5/8 from the face of the Harmonic Ballancer?
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.
Sport/Truck is offline   Reply With Quote
Old 10-05-2007, 11:45 AM   #22
skokie
Registered User
 
skokie's Avatar
 
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,354
Re: Crank pulleys.

Just curious but what kind of belts are those?
__________________
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
skokie is offline   Reply With Quote
Old 10-05-2007, 11:47 AM   #23
67ChevyRedneck
Hittin E-Z Street on Mud Tires
 
67ChevyRedneck's Avatar
 
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
Re: Crank pulleys.

Quote:
Originally Posted by skokie View Post
Just curious but what kind of belts are those?
I don't remember the name, but they look just like mine and I got them from Advance
__________________
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.
67ChevyRedneck is offline   Reply With Quote
Old 10-05-2007, 01:25 PM   #24
68Stepbed
Registered User
 
68Stepbed's Avatar
 
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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.




Quote:
Originally Posted by skokie View Post
Just curious but what kind of belts are those?
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.
Attached Images
    
__________________
Matt

68 C10 stepside, LS1/700R4, TCI Engineering suspension system
68Stepbed is offline   Reply With Quote
Old 10-05-2007, 01:33 PM   #25
68Stepbed
Registered User
 
68Stepbed's Avatar
 
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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.
__________________
Matt

68 C10 stepside, LS1/700R4, TCI Engineering suspension system
68Stepbed is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:02 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com