3/4 ton brake assemblys - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*wolfthing2000* · 02-23-2005, 06:15 PM

I have a 69 3/4 ton with corporate eaton style rear axle. I believe the brakes are 2x12 ( I haven't gotten in there yet to measure. I have a rear axle out of a 72 that has what looks like bigger brakes. The stud size is also bigger on the hubs for the wheel lug nuts. Will the bigger brake/ hub assemblys bolt on my 69 axle????
ThaNKS,
Dave

**JIMs70GMC** · 02-23-2005, 06:31 PM

I believe so. You plan on swapping the backing plate and the hub? The studs should be 1/2" on the 69 and 9/16" on the 72.

Dean · 02-23-2005, 10:04 PM

I've done this swap before and you will have to swap everything....backing plate, wheel cylinder, hardware, drum, shoes & etc.

Tx Firefighter · 02-24-2005, 07:31 AM

Please think about this a second before you dive in.

If the bigger brakes are the 15 inch size, you will pay very, very dearly for brake parts.

Wheel cylinders run 70 bucks and shoes 130 bucks. Thats near 300 bucks for just a basic brake rebuild.

I'm in the middle of this hell on my 72 dually right now.

*wolfthing2000* · 02-24-2005, 12:08 PM

I do believe these are 12s but wider than the 69s. Yes I would transplant everything.
Dave

02-23-2005, 06:15 PM	#1
wolfthing2000 Account Suspended Join Date: Oct 2004 Posts: 1,276	3/4 ton brake assemblys I have a 69 3/4 ton with corporate eaton style rear axle. I believe the brakes are 2x12 ( I haven't gotten in there yet to measure. I have a rear axle out of a 72 that has what looks like bigger brakes. The stud size is also bigger on the hubs for the wheel lug nuts. Will the bigger brake/ hub assemblys bolt on my 69 axle???? ThaNKS, Dave

02-23-2005, 06:31 PM	#2
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	I believe so. You plan on swapping the backing plate and the hub? The studs should be 1/2" on the 69 and 9/16" on the 72. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

02-24-2005, 07:31 AM	#4
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Please think about this a second before you dive in. If the bigger brakes are the 15 inch size, you will pay very, very dearly for brake parts. Wheel cylinders run 70 bucks and shoes 130 bucks. Thats near 300 bucks for just a basic brake rebuild. I'm in the middle of this hell on my 72 dually right now. __________________ I'm on the Instagram- @Gearhead_Kevin

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02-23-2005, 10:04 PM	#3
Dean Senior Member Join Date: Jan 2000 Location: Cincinnati, Ohio Posts: 1,492	I've done this swap before and you will have to swap everything....backing plate, wheel cylinder, hardware, drum, shoes & etc.

02-24-2005, 12:08 PM	#5
wolfthing2000 Account Suspended Join Date: Oct 2004 Posts: 1,276	I do believe these are 12s but wider than the 69s. Yes I would transplant everything. Dave



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