6-lug Conversion Rotors Question? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**67 cst swb** · 10-18-2005, 01:08 PM

Does anyone have a 6-lug conversion rotor they could look at? I'm wondering if there is a "CASTING #" anywhere on these rotors. If anyone could help out it would be greatly appreciated.

Tx Firefighter · 10-18-2005, 01:36 PM

I have a set of Early Classic 6 lug rotors at home in my shed. I'll look, but all I remember is the "minimum thickness" cast into them. ECE disguised them well if they are an OEM rotor. They came in unmarked boxes.

**dennislbrooks** · 10-18-2005, 02:40 PM

mine came just like Tx Firefighters --someone is casting them for some OEM somewhere in the world.

ChevLoRay · 10-18-2005, 02:50 PM

I ain't no help, either. They came in a box, and they went on the truck. 5-lug GM rotors are a direct replacement, if I ever decide to go with that pattern option.

**67 cst swb** · 10-18-2005, 03:09 PM

I'm hoping to get a casting # directly off the rotor itself... I deal with 2 mojor brake suppliers. I was told all rotors and drums all have a number cast into them for the cast molding. With that #, the part can be interchanged to my suppliers #. Thanks guys for your quick response.
Tx; I'm eager to hear from you.
Bryan

**Classic Heartbeat** · 10-18-2005, 04:00 PM

That is true for most OEM or aftermarket OEM parts. (Key being OEM) The 6 lug rotors for the disk brake conversions are for custom aplications and are usualy made by the company that manufactures the conversion spindles most of witch do not use casting numbers. WES www.ClassicHeartbeat.com

Tx Firefighter · 10-21-2005, 06:20 AM

The casting number on the rotors is "6069"

FirstGen · 10-21-2005, 10:25 AM

You should try the 1990 2x4 3/4 ton light duty rotors, they are 6 lug and have the same measurements as the early disc setups. That's what I am running but with the 1990 spindle also...

**67 cst swb** · 10-21-2005, 04:07 PM

FisrtGen,
I already tried them everything was correct except the alignment... the rotor surface centerline was too far outboard in relation to the caliper... I was kinda excited until it came to putting it on my truck.... My cost was like $35.00 or so each... Oh Well..

FirstGen · 10-21-2005, 04:28 PM

Quote:

Originally Posted by 67 cst swb

FisrtGen,
I already tried them everything was correct except the alignment... the rotor surface centerline was too far outboard in relation to the caliper... I was kinda excited until it came to putting it on my truck.... My cost was like $35.00 or so each... Oh Well..

bummer. I'm running the 1990 spindle, caliper and rotors so it worked for me. I just wanted to have a 6 lug with off the shelf parts...
Good luck with it.

**67 cst swb** · 10-25-2005, 11:56 AM

FirstGen,
I may have been incorrect on that. I got a reply today from My brake suppplier. Let me do some research, I'll let you know....
I'll keep you posted guys...

**67 cst swb** · 10-31-2005, 10:49 AM

FirstGen,
Well Damn... looks like the second try was the same results as the first. So, I'll be looking into the complete spindle thing like you did... I'm interested in evertything that you needed. Do you remember? Do you just use the 88-92 ball joints on the 71-86 control arms? Then use the 88-92 outer tie rod end? or something different? PM if you'd like... Any help would be greatly appreciated.

Custom 68 · 10-31-2005, 10:55 AM

did you check GMC Pauls, I know he has the kit but I thought he has the rotors for replacement also...

FirstGen · 10-31-2005, 11:21 AM

I used the 88-98 ball joints on the stock 1/2 ton 67-72 upper control arm and then had to use a 3/4 TON 67-72 lower a-arms to make up for the difference in the spindle. Then I used a different outer tie rod which I will have to look up the number for...
-Taylor

stllookn · 10-31-2005, 12:00 PM

FirstGen, Can you post all the info here so the rest of us can benefit from this conversion. Did you stock or drop spindles? That sounds like it might be a lower cost conversion than going with a new conversion kit.

FirstGen · 10-31-2005, 12:17 PM

Quote:

Originally Posted by stllookn

FirstGen, Can you post all the info here so the rest of us can benefit from this conversion. Did you stock or drop spindles? That sounds like it might be a lower cost conversion than going with a new conversion kit.

Sure can. I have already posted this entire conversion about 3 times. At one time it was saved in the FAQ pages but I don't know if they are there anymore.

anyway, I have drop spindles and bags now but origionally I used stock height spindles.

ChevLoRay · 10-31-2005, 12:40 PM

I have a pair of spindles off of my sons' '96 GMC Sportside, left over after installing dropped spindles. If anyone wants them, just pay the shipping. The truck had less than 60K miles when these came off of it....in summer of '02.

There would be a packaging charge, too. But, no charge for the spindles to anyone who wants them.

FirstGen · 10-31-2005, 01:52 PM

You'll have to make sure that those spindles had the 1.25" rotors not the 1" rotors which most of them had. The 1.25" rotor style are off the early 88-91 3/4 ton light duty 2x4... there are other year and makes but I don't remember off hand.

**67 cst swb** · 10-31-2005, 02:20 PM

FirstGen,
Thanks for all your helpful info... It's people like you that make me come to this web-site time after time... Thank You soooooo much....
I can't wait for your parts list...

70GMCer · 10-31-2005, 04:01 PM

67pete · 10-31-2005, 08:36 PM

ChevLoRay, I'll take those spindles off your hands, if the packing and shipping to 25271 isn't too much.

**67 cst swb** · 11-01-2005, 12:09 PM

ttt

stllookn · 11-01-2005, 12:13 PM

FirstGen, I too looked through every page of the FAQ section and could not find it. Oh well. I am not converting mine yet...still priming the body parts. I will get to disc brakes long after the paint is done.

Tx Firefighter · 11-02-2005, 07:18 AM

Quote:

Originally Posted by 67 cst swb

ttt

Didn't you see my post above with the casting number? It's cast right into my ECE 6 lug rotors. Is that not what you were looking for?

FirstGen · 11-02-2005, 11:48 AM

Quote:

Originally Posted by 67 cst swb

ttt

Well I dug out the part numbers. This is what I bought for this swap:
FROM O'REILLY AUTO PARTS:
2 MOOG ES2020RTL - inner stock 68 style tie rods 23.99 each
2 MOOG ES2836RL - outer conversion type tie rods 35.99 each
2 ADC K6293 - Stock 1990 lower ball joints 29.99 each
2 Stock upper 1990 upper ball joints I used the ones on the spindle I bought
FROM AUTOZONE:
2 BRAKE ROTOR #043398 also 5572 or 572 at 59.99 each
I also bought the wheel bearings but you can just look that up there.

Basically, I bought a 1990 model truck from K-member for like a $100. I used the spindles, calipers, brake lines, bearings, upper and lower ball joints, and factory rotors. You will also need a pair of 3/4 ton LOWER a-arm off a 1968-1972 chevy truck (C20). The only special piece in the combo is the OUTER tie rod as I have listed above from MOOG. The inner one is a stock 1968 chevy truck tie rod. It's possible that I have the two tie rod part numbers backwards but I remember the one off tie rod being more expensive than the stock one.

You will also now need the 14mm lug nuts for the front. I went ahead a re-drilled my rear axles to take the same studs since the factory studs look weak as hell.

-Taylor

10-18-2005, 01:08 PM	#1
67 cst swb Senior Member Join Date: Nov 2001 Location: Rapid City, SD Posts: 2,281	6-lug Conversion Rotors Question? Does anyone have a 6-lug conversion rotor they could look at? I'm wondering if there is a "CASTING #" anywhere on these rotors. If anyone could help out it would be greatly appreciated. __________________ My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White

10-18-2005, 01:36 PM	#2
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: 6-lug Conversion Rotors Question? I have a set of Early Classic 6 lug rotors at home in my shed. I'll look, but all I remember is the "minimum thickness" cast into them. ECE disguised them well if they are an OEM rotor. They came in unmarked boxes. __________________ I'm on the Instagram- @Gearhead_Kevin

10-18-2005, 02:40 PM	#3
dennislbrooks Senior Member Join Date: Feb 2004 Location: Williamsburg, Ohio Posts: 1,787	Re: 6-lug Conversion Rotors Question? mine came just like Tx Firefighters --someone is casting them for some OEM somewhere in the world.

10-18-2005, 02:50 PM	#4
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: 6-lug Conversion Rotors Question? I ain't no help, either. They came in a box, and they went on the truck. 5-lug GM rotors are a direct replacement, if I ever decide to go with that pattern option. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

10-18-2005, 03:09 PM	#5
67 cst swb Senior Member Join Date: Nov 2001 Location: Rapid City, SD Posts: 2,281	Re: 6-lug Conversion Rotors Question? I'm hoping to get a casting # directly off the rotor itself... I deal with 2 mojor brake suppliers. I was told all rotors and drums all have a number cast into them for the cast molding. With that #, the part can be interchanged to my suppliers #. Thanks guys for your quick response. Tx; I'm eager to hear from you. Bryan __________________ My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White

10-18-2005, 04:00 PM	#6
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,766	Re: 6-lug Conversion Rotors Question? That is true for most OEM or aftermarket OEM parts. (Key being OEM) The 6 lug rotors for the disk brake conversions are for custom aplications and are usualy made by the company that manufactures the conversion spindles most of witch do not use casting numbers. WES www.ClassicHeartbeat.com __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

10-21-2005, 06:20 AM	#7
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: 6-lug Conversion Rotors Question? The casting number on the rotors is "6069" __________________ I'm on the Instagram- @Gearhead_Kevin

10-21-2005, 10:25 AM	#8
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	Re: 6-lug Conversion Rotors Question? You should try the 1990 2x4 3/4 ton light duty rotors, they are 6 lug and have the same measurements as the early disc setups. That's what I am running but with the 1990 spindle also... __________________ 1968 C10 build in process TT LSA/6L90e/9"

10-21-2005, 04:07 PM	#9
67 cst swb Senior Member Join Date: Nov 2001 Location: Rapid City, SD Posts: 2,281	Re: 6-lug Conversion Rotors Question? FisrtGen, I already tried them everything was correct except the alignment... the rotor surface centerline was too far outboard in relation to the caliper... I was kinda excited until it came to putting it on my truck.... My cost was like $35.00 or so each... Oh Well.. __________________ My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White

10-25-2005, 11:56 AM	#11
67 cst swb Senior Member Join Date: Nov 2001 Location: Rapid City, SD Posts: 2,281	Re: 6-lug Conversion Rotors Question? FirstGen, I may have been incorrect on that. I got a reply today from My brake suppplier. Let me do some research, I'll let you know.... I'll keep you posted guys... __________________ My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White

10-31-2005, 10:49 AM	#12
67 cst swb Senior Member Join Date: Nov 2001 Location: Rapid City, SD Posts: 2,281	Re: 6-lug Conversion Rotors Question? FirstGen, Well Damn... looks like the second try was the same results as the first. So, I'll be looking into the complete spindle thing like you did... I'm interested in evertything that you needed. Do you remember? Do you just use the 88-92 ball joints on the 71-86 control arms? Then use the 88-92 outer tie rod end? or something different? PM if you'd like... Any help would be greatly appreciated. __________________ My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White Last edited by 67 cst swb; 10-31-2005 at 10:50 AM.

10-31-2005, 10:55 AM	#13
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,937	Re: 6-lug Conversion Rotors Question? did you check GMC Pauls, I know he has the kit but I thought he has the rotors for replacement also... __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

10-31-2005, 11:21 AM	#14
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	Re: 6-lug Conversion Rotors Question? I used the 88-98 ball joints on the stock 1/2 ton 67-72 upper control arm and then had to use a 3/4 TON 67-72 lower a-arms to make up for the difference in the spindle. Then I used a different outer tie rod which I will have to look up the number for... -Taylor __________________ 1968 C10 build in process TT LSA/6L90e/9"

10-31-2005, 12:00 PM	#15
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Re: 6-lug Conversion Rotors Question? FirstGen, Can you post all the info here so the rest of us can benefit from this conversion. Did you stock or drop spindles? That sounds like it might be a lower cost conversion than going with a new conversion kit. __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

10-31-2005, 12:40 PM	#17
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: 6-lug Conversion Rotors Question? I have a pair of spindles off of my sons' '96 GMC Sportside, left over after installing dropped spindles. If anyone wants them, just pay the shipping. The truck had less than 60K miles when these came off of it....in summer of '02. There would be a packaging charge, too. But, no charge for the spindles to anyone who wants them. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.



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10-31-2005, 01:52 PM	#18
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	Re: 6-lug Conversion Rotors Question? You'll have to make sure that those spindles had the 1.25" rotors not the 1" rotors which most of them had. The 1.25" rotor style are off the early 88-91 3/4 ton light duty 2x4... there are other year and makes but I don't remember off hand. __________________ 1968 C10 build in process TT LSA/6L90e/9"

10-31-2005, 02:20 PM	#19
67 cst swb Senior Member Join Date: Nov 2001 Location: Rapid City, SD Posts: 2,281	Re: 6-lug Conversion Rotors Question? FirstGen, Thanks for all your helpful info... It's people like you that make me come to this web-site time after time... Thank You soooooo much.... I can't wait for your parts list... __________________ My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White

10-31-2005, 04:01 PM	#20
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Re: 6-lug Conversion Rotors Question? __________________ 1997 GMC Sierra Ext 1965 Mustang

10-31-2005, 08:36 PM	#21
67pete Registered User Join Date: Jun 2005 Location: ripley,wv Posts: 1	Re: 6-lug Conversion Rotors Question? ChevLoRay, I'll take those spindles off your hands, if the packing and shipping to 25271 isn't too much.

11-01-2005, 12:09 PM	#22
67 cst swb Senior Member Join Date: Nov 2001 Location: Rapid City, SD Posts: 2,281	Re: 6-lug Conversion Rotors Question? ttt __________________ My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White

11-01-2005, 12:13 PM	#23
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Re: 6-lug Conversion Rotors Question? FirstGen, I too looked through every page of the FAQ section and could not find it. Oh well. I am not converting mine yet...still priming the body parts. I will get to disc brakes long after the paint is done. __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

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