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#1 |
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Drop spindle Question
Looks like I may have ordered the wrong drop spindles. What is the difference in 1967 and 1971 drop spindles? Will these later drop spindles fit on my 67? My truck has front disc brakes from 71-86. Am I going to have to take a trip to Summit to exchange these?
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#2 |
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Re: Drop spindle Question
Ball joints and tierod ends. If your truck already has disc (I'm assuming 5 lug?) it either has the 71-72 style or the 73-87 style. If you have the 73-87 drop spindle and it DOESN'T work with what you have then you probably need the ball joints for a 71-72 and the right tierod end for the 71-72.
That being said, people do some crazy things to these trucks... sometimes it's hard to figure out what has been done. Have you checked this link? http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Good luck, Rg
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Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203 Last edited by raggedjim; 05-24-2017 at 09:10 PM. Reason: correct mistakes |
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#3 | |
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Re: Drop spindle Question
Quote:
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#4 |
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Re: Drop spindle Question
71-72 stock spindles should have "3969462" & "3969461" cast on the back.
73-87 stock spindles with 1-1/4" disc have "6274263" and "6274264" cast on the back. 81-87 stock spindles with 1" disc have "14018389" and"14018390" cast on the back. Not saying these are all the casting numbers, but it's a good start. Good luck, Rg
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Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203 |
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#5 | |
67-72 parts collector,…
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Re: Drop spindle Question
Quote:
It isn't 71-86. It's 71-72 or 73-87 with 1" rotors or 73-87 with 1.25" rotors. The balljoints and tie rods are different from 71-72 and 73-87. Technically only the lower balljoints are the same between 71-72 and 73-87
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#6 |
67-72 parts collector,…
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Re: Drop spindle Question
Everything needs to match the year spindle you are going to put on your truck.
Balljoints Tie rods Centerlink
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#7 |
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Re: Drop spindle Question
If it ever dries out here I will pull the truck into the back garage and tear into it and see what I have now. Thanks for all the info.
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#8 |
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Re: Drop spindle Question
I recently went through something similar... PO installed 71-72 components onto my 67 with drop spindles to match those 71-72 ball joints and tie rod ends. After ordering and installing the WRONG upper/lower ball joints for a 67, I discovered they will not work with the spindle which was requiring 71-72 parts.
MOOG parts for the two different model ranges. .........upper lower outer inner upper shaft kit lower shaft kit 67-70 K6024 K6023 .ES350L ES370R K6098 K6147 71-72 K6124 K6117T ES415RL ES403L K6098 K6147 The table above lists out the ball joint, tie rod and a-arm shaft MOOG part numbers for 67-70 and 71-72. Note that the shaft kits are identical. Hth, -klb
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67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold Last edited by weq92f; 05-25-2017 at 10:04 AM. |
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#9 | |
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Re: Drop spindle Question
Quote:
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power Last edited by ga-stepside; 05-25-2017 at 10:26 AM. |
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#10 |
Hittin E-Z Street on Mud Tires
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Re: Drop spindle Question
Just about every spindle I've ever seen (even aftermarket) have a P/N on them.
Hopefully it matches the list above, or it's something aftermarket and you can google it. Not a big deal, you'll get it figured out. Then when you do, order your drop spindles to match what you have, they'll be 67-70, 71-72, or 73-87 (I'm not throwing out the possibility you have 67-70 aftermarket disc spindles at stock height... stranger things have happened). I'll throw in another wrench... are you sure you don't have drop spindles already and the springs were just never lowered? ![]()
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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! |
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#11 |
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Re: Drop spindle Question
!
another option: Take you spindle to the parts house and have them pull ball joints and outer tie rod end for the 2 different options ( 71-72 and 73-87 ). You'll be able to determine quickly which is correct by sliding them into your machined surfaces on the spindle. All the ball joints will fit your a-arm and all the tie rod ends will fit your adjuster sleeve, just need to get the correct parts. Mine is all buttoned back together without issue. That is, once I got the right parts installed!!! I have a new set of upper/lower ball joints to fit a Drum brake 67. Can't use them and can't send them back. -klb
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67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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#12 | |
67-72 parts collector,…
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Re: Drop spindle Question
Quote:
I've seen it happen several times on the board,... Post a picture of your spindles and we can tell if they are drop or stock height spindles. A picture of the a-arms would help too.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#13 |
Hittin E-Z Street on Mud Tires
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Re: Drop spindle Question
This is a 2.5" drop spindle, the actual spindle is in the middle-ish part of the whole deal.
On a stock spindle, the actual spindle is pretty much at the "bottom" of the spindle, close to the lower control arm. Terrible picture, but you can see in my parts pile that the "spindle" is very close to the bottom on the stock stuff.
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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! |
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#14 | |
67-72 parts collector,…
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Re: Drop spindle Question
Quote:
All 71-72 and 73-87 use 11/16" adjusting sleeves. So the tie rods will swap between these two year groups. BUT,... 63-70 trucks use a 5/8" adjusting sleeve and the tie rods are threaded opposite of the later years. (63-70 outer tie rods are LH thread,... 71-72 and 73-87 outer tie rods are RH thread)
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#15 |
Hittin E-Z Street on Mud Tires
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Re: Drop spindle Question
^Isn't it funny how you can bolt a 4L60 right up to a 327 but you can't swap tie rods between a 70 and a 71?
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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! |
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#16 | |
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Re: Drop spindle Question
Quote:
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#17 |
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Re: Drop spindle Question
Looking at the back of the spindle it is not a lowered one, plus the truck sits pretty high, the fender is about 3" off the tire.
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#18 |
Hittin E-Z Street on Mud Tires
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Re: Drop spindle Question
Cool. That's one step figured out.
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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! |
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#19 |
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Re: Drop spindle Question
Okay here is the spindle I have now. There is a casting number 481 LH 2v on the outside and I think 3990491 on the inside.
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power Last edited by ga-stepside; 05-25-2017 at 01:36 PM. |
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#20 |
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Re: Drop spindle Question
I got both spindles off and compared them to the 71-72 drop spindles I got from Summit and they look the same as far as the holes for the ball joints and tie rod. So I guess I lucked out. Of course nothing goes without issues and one of the upper ball joint boots is totally ripped, nothing I did but I need a new one, fortunately they are bolted on.
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power |
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#21 |
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Re: Drop spindle Question
Just make sure there's no "slop" or free space around the shaft for each of the 3 things you plug into the spindle. Very important the fit is perfect.
-klb
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67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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#22 |
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Re: Drop spindle Question
Yeah, I know that. Logically since there are no after market markings on these spindles logic indicates they are GM parts. And since the rotors are 71-72 I think the PO swapped everything when he made the disc brake conversion. I went the Oreillys this morning to get a upper ball joint and of course they have to get it from the warehouse this afternoon.
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#23 |
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Re: Drop spindle Question
I called Moog tech support (800-325-8886) today to get dimensions on the upper ball joints. The difference in the 67 and 71 is the small end of the taper on a 67 (6024) is .588 and the 71 (6124) is .551. The big ends are the same .702. So what I have are 67 ball joints and spindles for who know where. Since I already need one upper ball joint because of the torn boot and the others don't look all that great I have decided to head to Summit and exchange these spindles for the correct ones and get new upper ball joints..
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1967 C10 Step side 1970 AMX 390 1977 Datsun 280Z highly modified with '95 LT1 power Last edited by ga-stepside; 05-28-2017 at 04:46 AM. |
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