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#1 |
C10 addict
Join Date: Apr 2006
Location: Arizona
Posts: 2,432
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63-70 versus 71-72 Drop Spindle Differences
I'm sure this question has been asked a few times before but I couldn't find the answer when I searched so I figured I'd ask it again. When ordering drop spindles, what is the difference between the ones made for 63-70 trucks and the ones for 71-72 trucks? I know they both use 71-72 disc brakes, but I vaguely remember there being a difference in the control arm ball joints? Is that the only difference? Is one preferred over the other? Do both spindles push the wheel out 3/4" per side?
I have a 72 donor truck and if it's worth the hassle I can swap the control arms onto my 67. I bought the 63-70 Western Chassis drop spindles with the upgraded 73-87 tie rod parts, but I could sell them and get the 71-72 if there is an added benefit. Thanks in advance! |
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#2 |
Sisyphus was my mentor!
![]() Join Date: Sep 2002
Location: Carleton Place, Ontario CANADA
Posts: 984
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Re: 63-70 versus 71-72 Drop Spindle Differences
I understood that the only difference is that the tapers for the balljoints are different between the two. I put the 63-70 ones on my truck as well because I had rebuilt the front end of my 67 500 miles before and I would have had to rebuild the frontend of the 71 donour frontend if I had installed it. Also, I work alone in my driveway & there was no way I would be able to put the crossmember in alone...
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passthebuck ![]() #5642 -TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4. -a 2013 Honda Civic as my "sensible" car |
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#3 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: 63-70 versus 71-72 Drop Spindle Differences
The inner AND outer tie rods, tie rod adjusters, drag link, and all ball joints are all different. If your suspension needs rebuilt anyway, flip a coin. The 63-70 spindles are desinged to use the 63-70 ball joints and tie rods you already have.
If you have 73-87 tie rods, they won't work with the 63-70 soindles.
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Last edited by 68Stepbed; 01-04-2011 at 12:16 PM. |
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#4 |
C10 addict
Join Date: Apr 2006
Location: Arizona
Posts: 2,432
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Re: 63-70 versus 71-72 Drop Spindle Differences
These Western Chassis spindles are designed to use the 73-87 outer tie rods and ball joints (sold as a complete set), that's why I am confused why they sell a 63-70 kit and a 71-72 kit.
This is what the vendor has advertised: These popular kits are a great way to lower your truck 2.5" in the front and upgrade to the more readily available ball joints and tie rod ends from the 73-87 truck. Kits are available for 1963-70 and 71-72 trucks only. 1963-70 kits include: • Upper and Lower ball joints • Outer tie rod ends • High Performance adjusting sleeves 1971-72 kits include: • Upper ball joints • Outer tie rod ends |
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#5 |
Sisyphus was my mentor!
![]() Join Date: Sep 2002
Location: Carleton Place, Ontario CANADA
Posts: 984
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Re: 63-70 versus 71-72 Drop Spindle Differences
It appears that your chosen vendor has decided not to carry the full line of Western spindles. 63-70, 71-72 & 73-87 spindles all appear to be similar dimensionally, but all have different balljoints. You can convert your truck to 73-87 balljoints & use the 73-87 spindles. However, look around at some board vendors & you'll find that you can get the conversion spindles that will allow you to use your 67 balljoints (assuming they are in good shape) without buying unnecessary extra parts. I had zero problem getting balljoints for my 67 so I dont know what they mean by "more readily available"...
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passthebuck ![]() #5642 -TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4. -a 2013 Honda Civic as my "sensible" car |
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#6 |
1965 Chevy C10, 2005 4.8L/4l60
![]() Join Date: Aug 2004
Location: DFW Texas
Posts: 8,543
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Re: 63-70 versus 71-72 Drop Spindle Differences
I dont know for sure but I have seen some that are "Modular" and keep the wheel/tire in closer than others like the 73-87.
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Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 ![]() ![]() ![]() support our troops! |
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#7 | |
C10 addict
Join Date: Apr 2006
Location: Arizona
Posts: 2,432
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Re: 63-70 versus 71-72 Drop Spindle Differences
Quote:
Does anyone know if there are differences between the control arms for a 63-70 drum setup and a 71-72 disc setup? I'm wondering if there might be a difference there that requires a change in the spindle. |
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#8 |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,699
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Re: 63-70 versus 71-72 Drop Spindle Differences
Same control arms from 67-72.
Those spindles are 73-87 spindles. They are cheaper because the balljoints and tie rods are cheaper. All drop spindles (with the exception of CPP's modular spindles) are designed after the 73-87 spindle. The tie rod holes and balljoint holes are just reamed different sizes. This is why they can make a different spindle for all the years. 60-62, 63-70, 71-72, and 73-87.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 01-04-2011 at 03:56 PM. |
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#9 | |
C10 addict
Join Date: Apr 2006
Location: Arizona
Posts: 2,432
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Re: 63-70 versus 71-72 Drop Spindle Differences
Quote:
If they are 73-87 spindles, is there any difference from a wheel placement standpoint than the 63-70 or 71-72 drop spindles, or is it purely the bore size of the ball joint and tie rod hole that is different? So the 60-87 spindle is all th same except the hole sizes? Last edited by mahanian; 01-04-2011 at 04:17 PM. |
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#10 |
Registered User
Join Date: Jan 2006
Location: Garland, TX
Posts: 970
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Re: 63-70 versus 71-72 Drop Spindle Differences
sorry to jack your thread but will 73-87 rotors fit on the 67-70 or 71-72 spindles?
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'84 swb chevy '69 swb chevy '68 swb chevy '95 Impala ss-sold '89 chevy crew cab dually 3+3 |
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#11 | |
67-72 parts collector,…
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Location: Mid-MO
Posts: 22,699
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Re: 63-70 versus 71-72 Drop Spindle Differences
Quote:
All the conversion spindles will use the 71-87 rotor and caliper, and bearings. The only exception is the light duty rotors that GM used between 81-87. They were the 1" wide version,... compared to the 1.25" wide version.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#12 | |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
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Re: 63-70 versus 71-72 Drop Spindle Differences
Quote:
As long as they are the HD version. 1.25" wide rotors. Everything has to match the rotor width. Bearings, Caliper, Rotors, and spindles. Why GM EVER made a light duty rotor is beyond me. All it does is add confusion.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#13 |
Registered User
Join Date: Sep 2009
Location: san antonio, texas
Posts: 95
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Re: 63-70 versus 71-72 Drop Spindle Differences
How can one tell the rotors apart? From 1 to 1.25?
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#14 |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,699
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Re: 63-70 versus 71-72 Drop Spindle Differences
Measure the width with a tape measure,...
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#15 |
Registered User
Join Date: May 2008
Location: Eastern Iowa
Posts: 423
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Re: 63-70 versus 71-72 Drop Spindle Differences
quote=lolife99;4388710]Measure the width with a tape measure,...[/quote]
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Matt Garage build http://www.garagejournal.com/forum/s...ead.php?t=6784 My slow but sure truck build http://67-72chevytrucks.com/vboard/s...d.php?t=394924 ![]() My philosophy on tires is the same as cigarettes. "smoke them if you got them" HAPPILY DIVORCED! |
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