6-lug question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GMC JUNKIE TOO · 03-12-2003, 07:58 PM

Well its time for front disc brakes and a while back it was said that you could put brake rotors from an 88 up 6-lug 3/4 ton rotor on a 71-72 spindle no problems. I need to know for shure before I start, I have a 69 1/2 ton. I thought i could just buy drop spindles for stock balljoints and buy rotors and calipers for alot cheaper.

Allso the other day I had one of my crazy ideas and thought about puting a 99 up rear end in my truck but I dont know if its doable what do you guys (and gals) think.

Thanks Ben

tommie · 03-12-2003, 09:46 PM

I can tell you what I am doing right now.

I have been converting my 70' over to frt disc.

these are the parts that i used all others are stock:

1) 6 lug rotors from GMC Paul (both rotors, inner and outer wheel brgs, calipers,hoses,pads,) $219 (or something close)

2) 73-87' 1/2 ton spindles heavy duty (for use with 1.25" thick rotors) not the 1" thick rotors (free, always someone dropping a chevy around here)

3) upper and lower ball joints for 73-87
4) outer tie rod end for 73-87
5) outer tie rod for 70 truck (for use as inner)

6) tie rod adapter sleeves( bought from case-bt, think they come from classic performance products) very nice product.

i also plan on buying brake lines from inline tube since mine are over 30 years old,

and i also need to buy a master cylinder and proportioning valve for the disc setup.

thats what i have been doing lately.

the other choices are buying a complete kit with spindles from a vendor,

swapping over a front crossmember from a 71-87 1/2 ton

or someone else said something about using the newer 6 lug rotors, but i don't remember the whole swap and what was involved

later
tommie

matt67350 · 03-13-2003, 02:31 AM

Tommie, what brake line are you going to use if you are using the big brakes up front?

tommie · 03-13-2003, 01:34 PM

the rubber brake hoses came with the kit from GMC Paul, I am going to buy new brake lines(metal) from inline tube.

tommie

outlaw · 03-24-2003, 04:46 AM

one thing I have learned is that nothing is impossible, someone will come up with a way to make it work

03-12-2003, 07:58 PM	#1
GMC JUNKIE TOO THE QUICKER FIXERUPER Join Date: Jul 2002 Location: Ok Posts: 615	6-lug question Well its time for front disc brakes and a while back it was said that you could put brake rotors from an 88 up 6-lug 3/4 ton rotor on a 71-72 spindle no problems. I need to know for shure before I start, I have a 69 1/2 ton. I thought i could just buy drop spindles for stock balljoints and buy rotors and calipers for alot cheaper. Allso the other day I had one of my crazy ideas and thought about puting a 99 up rear end in my truck but I dont know if its doable what do you guys (and gals) think. Thanks Ben

03-13-2003, 02:31 AM	#3
matt67350 Registered User Join Date: May 2001 Location: Benbrook, TX Posts: 1,060	Tommie, what brake line are you going to use if you are using the big brakes up front? __________________ 69 swb stepside, rebuild and upgrade in progress

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03-12-2003, 09:46 PM	#2
tommie 97' Tahoe 2dr/2wd Join Date: Jul 2002 Location: Huffman,TX Posts: 1,168	I can tell you what I am doing right now. I have been converting my 70' over to frt disc. these are the parts that i used all others are stock: 1) 6 lug rotors from GMC Paul (both rotors, inner and outer wheel brgs, calipers,hoses,pads,) $219 (or something close) 2) 73-87' 1/2 ton spindles heavy duty (for use with 1.25" thick rotors) not the 1" thick rotors (free, always someone dropping a chevy around here) 3) upper and lower ball joints for 73-87 4) outer tie rod end for 73-87 5) outer tie rod for 70 truck (for use as inner) 6) tie rod adapter sleeves( bought from case-bt, think they come from classic performance products) very nice product. i also plan on buying brake lines from inline tube since mine are over 30 years old, and i also need to buy a master cylinder and proportioning valve for the disc setup. thats what i have been doing lately. the other choices are buying a complete kit with spindles from a vendor, swapping over a front crossmember from a 71-87 1/2 ton or someone else said something about using the newer 6 lug rotors, but i don't remember the whole swap and what was involved later tommie

03-13-2003, 01:34 PM	#4
tommie 97' Tahoe 2dr/2wd Join Date: Jul 2002 Location: Huffman,TX Posts: 1,168	the rubber brake hoses came with the kit from GMC Paul, I am going to buy new brake lines(metal) from inline tube. tommie

03-24-2003, 04:46 AM	#5
outlaw Registered User Join Date: Dec 2002 Location: Leesville, Louisiana Posts: 80	one thing I have learned is that nothing is impossible, someone will come up with a way to make it work



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