Need help on spindle measurements. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**crossy** · 02-02-2005, 12:22 PM

I have a new set of dropped spindles laying here and because they are not marked I need to know whether they are for the 73-80 or 81-87 Rotors. From the FIRST machined surface the measurement is 4-3/4" out to the end and from the next 'step' out they measure 4-1/4" to the end. The Diameter of the surface wher the inner bearing sits is 1.250 and where the outer bearing sits they are .843 on OD. I believe these are for 81-87 'thin' rotors and will measure the same as any 81-87 stock spindle so if you have your old ones laying measure those for me please.
They did offer the thicker 73-80 style rotors as some sort of option on the 81- trucks but I don't know the RPO code .

I'm getting set for a big spring cleanout here and like to advertise honestly. .
thanx , DAVE

**N2TRUX** · 02-02-2005, 09:58 PM

Dave I can't help you on the spindles. Just so you know the difference in the spindles is not quit that year specific. My 82 Blazer came with the HD (1.25") brakes, and so did my 77....

**crossy** · 02-02-2005, 10:18 PM

yep, I know, as explained, but if two or three people say that have their stock ones laying and measure them i can get an idea. most 1981's have 1980 back suspension parts on them also. thing is if someone with say stock 77:-) were to say that theirs are longer spindles than i know for sure that they are for the skinny rotors. DAVE

**crossy** · 02-08-2005, 01:57 PM

c-mon , this won't hurt

02-02-2005, 12:22 PM	#1
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	Need help on spindle measurements. I have a new set of dropped spindles laying here and because they are not marked I need to know whether they are for the 73-80 or 81-87 Rotors. From the FIRST machined surface the measurement is 4-3/4" out to the end and from the next 'step' out they measure 4-1/4" to the end. The Diameter of the surface wher the inner bearing sits is 1.250 and where the outer bearing sits they are .843 on OD. I believe these are for 81-87 'thin' rotors and will measure the same as any 81-87 stock spindle so if you have your old ones laying measure those for me please. They did offer the thicker 73-80 style rotors as some sort of option on the 81- trucks but I don't know the RPO code . I'm getting set for a big spring cleanout here and like to advertise honestly. . thanx , DAVE __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks. Last edited by crossy; 02-02-2005 at 12:25 PM.

02-02-2005, 09:58 PM	#2
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Dave I can't help you on the spindles. Just so you know the difference in the spindles is not quit that year specific. My 82 Blazer came with the HD (1.25") brakes, and so did my 77.... __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

02-02-2005, 10:18 PM	#3
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	yep, I know, as explained, but if two or three people say that have their stock ones laying and measure them i can get an idea. most 1981's have 1980 back suspension parts on them also. thing is if someone with say stock 77:-) were to say that theirs are longer spindles than i know for sure that they are for the skinny rotors. DAVE __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

02-08-2005, 01:57 PM	#4
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	c-mon , this won't hurt __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

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