Need help getting a u-joint for my steering - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gottwake · 05-20-2010, 10:51 PM

This is my pump. It has a flat spot and the spline count is 30 with two half splines on either side of the flat area. Its 3/4". I orderd a 3/4 DD X 3/4 - 30. But it's too small.

**Yukon Jack** · 05-20-2010, 11:21 PM

It is probably 3/4 with 36 spline - check my reply in this thread out.

gottwake · 05-21-2010, 01:34 AM

So my pump is not abnormal with the flat spot? Who to call to get someone who knows these parts to help me? Thanks.

Burt4x4 · 05-21-2010, 08:42 AM

When you count the splines you need to include the flat spot. I used Borgeson http://www.borgeson.com/
It's been several years so I can't remember but I think YJ is correct 36 spline.
After 72 pretty sure GM changed the gearbox...might be 74 again I can't remember

msgross · 05-21-2010, 08:45 AM

I suggest that you check this thread out... CPPJeff will get you whatever you need..

http://67-72chevytrucks.com/vboard/s...hlight=shafted

orange72blazer · 05-21-2010, 10:41 AM

The spline size on the steering box is 13/16 36 spline or at least mine was. Here is a link to a chart with sizes http://www.flamingriver.com/p_view_i..._Tech_Tips.gif

05-20-2010, 10:51 PM	#1
gottwake Registered User Join Date: Oct 2007 Location: Santa Clarita, CA Posts: 581	Need help getting a u-joint for my steering This is my pump. It has a flat spot and the spline count is 30 with two half splines on either side of the flat area. Its 3/4". I orderd a 3/4 DD X 3/4 - 30. But it's too small. Attached Images __________________ Blazer Project Last edited by gottwake; 05-20-2010 at 10:52 PM.

05-20-2010, 11:21 PM	#2
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	Re: Need help getting a u-joint for my steering It is probably 3/4 with 36 spline - check my reply in this thread out. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

05-21-2010, 01:34 AM	#3
gottwake Registered User Join Date: Oct 2007 Location: Santa Clarita, CA Posts: 581	Re: Need help getting a u-joint for my steering So my pump is not abnormal with the flat spot? Who to call to get someone who knows these parts to help me? Thanks. __________________ Blazer Project

05-21-2010, 08:42 AM	#4
Burt4x4 Registered User Join Date: Feb 2000 Location: Modesto, CA Posts: 1,842	Re: Need help getting a u-joint for my steering When you count the splines you need to include the flat spot. I used Borgeson http://www.borgeson.com/ It's been several years so I can't remember but I think YJ is correct 36 spline. After 72 pretty sure GM changed the gearbox...might be 74 again I can't remember __________________ 1972 K5 MPFI454/Sm465/Np205/D60/14FFd/Re-Centerd H1s w/Swamper Iroks

05-21-2010, 08:45 AM	#5
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Need help getting a u-joint for my steering I suggest that you check this thread out... CPPJeff will get you whatever you need.. http://67-72chevytrucks.com/vboard/s...hlight=shafted __________________ 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"

05-21-2010, 10:41 AM	#6
orange72blazer Registered User Join Date: Dec 2003 Location: West Michigan Posts: 447	Re: Need help getting a u-joint for my steering The spline size on the steering box is 13/16 36 spline or at least mine was. Here is a link to a chart with sizes http://www.flamingriver.com/p_view_i..._Tech_Tips.gif __________________ 1972 Chevy Blazer 1997 GMC Sierra 2009 Chevy Tahoe Last edited by orange72blazer; 05-21-2010 at 10:51 AM. Reason: added link



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