Corvette Rallyes and Disc Brakes?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tcb-1 · 01-16-2008, 08:02 AM

Does anyone have this combination of wheels and brakes? I have 15", 6 lug, 10" wide 'Vette Rallyes and I am going to pick up a front disc brake kit from GMCPauls. I am wondering if I am going to have any clearance problems.

anyone know???

Has anyone used the GMCPaul's kit???

Thanks!

northerngmc · 01-16-2008, 10:47 AM

From what I have read on here it depends on the inside of your wheels.

There was a post last spring with a diagram showing the difference on the inside of the wheel.

70GMCer · 01-16-2008, 10:54 AM

Ask 70c10. He used the kit from GMCPauls....

69c10step · 01-16-2008, 11:16 AM

This is from GMCPauls site

70c10 · 01-16-2008, 11:48 AM

Quote:

Originally Posted by tcb-1

Does anyone have this combination of wheels and brakes? I have 15", 6 lug, 10" wide 'Vette Rallyes and I am going to pick up a front disc brake kit from GMCPauls. I am wondering if I am going to have any clearance problems.

anyone know???

Has anyone used the GMCPaul's kit???

Thanks!

I run 275/60/15 on 8" Centerline rims with no problems. If you run a 8" rim I would go a size or two smaller on the tires from what I use or go with a 7" rim. These spindles push your track width out!. A 10" rim on the front is going to look really bad sticking outside the wheel well in my opinion. Double check your rims, maybe they are only 8"?

alfeefish · 01-16-2008, 11:52 AM

I ground my calipers on the out side. It gave me the clearance I needed.

ChevyDude · 01-16-2008, 11:56 AM

Corvette Rally's disc brakes...yup!!!

northerngmc · 01-16-2008, 12:28 PM

Quote:

Originally Posted by 69c10step

This is from GMCPauls site

That is the diagram I was thinking of.......

ChevLoRay · 01-16-2008, 01:08 PM

I have ECE 6-lug disc conversion on my truck, and I am running Wheel Vintique vette-style rallye wheels. On the front, I have 15x8's with a 4-inch backspace. The rears are 15x10's with a 5-inch backspace. Th9ey clear without any problems.

On the other hand, I have a '96 GMC with dropped spindles from DJM. I cannot run the stock wheels on the front, nor can I run a wheel with a 4-inch backspace, if I am running 15-inch diameter wheels. Larger diameter wheels won't be a problem. Just don't have extra funds at the moment and my tires are newly-installed on the custom wheels I already had.

tcb-1 · 01-16-2008, 01:51 PM

I have 15" x 10" wides all the way around with 275/60's. Didn't want the front to track wider though.......I have just enough to tuck the tires on bumps with an additional 2.5" drop. Hope it all works out.

70C10, were you happy with GMCPau'l's kit??

ChevLoRay, happy with the ECE??

Here the setup I have at this point.

tcb-1 · 01-17-2008, 07:56 AM

I'm a bit paranoid now! So a disc brake conversion is going to cause the rims to set further out???????

Remember, I have 10" wide rims with a 4" backspace.

byrd · 01-17-2008, 11:00 AM

Quote:

Originally Posted by tcb-1

I'm a bit paranoid now! So a disc brake conversion is going to cause the rims to set further out???????

Remember, I have 10" wide rims with a 4" backspace.

Yep sure will by about 3/4" on each side, GM madee up for this on the 71-2 by making the rear end 3/4" wider on each side to make the wheels track the same. You could add a spacer in the rear to even them out.

ChevLoRay · 01-17-2008, 01:08 PM

I am quite satisfied with my ECE components. I added some NAPA stuff to the mix and have a completely rebuilt front suspension.

Yes, the change from drums to discs on these trucks will add to width of the front track. When I did mine, I was running 15x8's with too much backspace. I swapped them for a pair of 15x7's that I was running on another '69, and solved the problem of tires that came into contact with the fenders and wheel openings.

By the way, are you SURE that the wheels you are running are 10-inches wide? The just don't look like they should if they are, like they have a heckuva offset to the inside. I'm running 10-inch wide wheels on the rear of my truck, with 8-inch wide wheels on the front. Rear has a 5-inch backspace. Front has a 4-inch backspace. I have had zero problems with this setup. As an aside, I have to run 15x7's on the front of my '96, with a 3.5-inch backspace, to clear the lower control arms with the inside of my wheels.

70c10 · 01-17-2008, 03:00 PM

Quote:

Originally Posted by tcb-1

I have 15" x 10" wides all the way around with 275/60's. Didn't want the front to track wider though.......I have just enough to tuck the tires on bumps with an additional 2.5" drop. Hope it all works out.

70C10, were you happy with GMCPau'l's kit??

ChevLoRay, happy with the ECE??

Here the setup I have at this point.

Yes, very happy with my kit!

tcb-1 · 01-17-2008, 03:45 PM

Holy crap, I am an idiot! All of you are right! I have 15 x 8 rims. I have no clue why I thought they were 10's! I chalk this screw up to know sleep due to a 9 month old son!!!!!!!!

Okay clear the page. I have 15 x 8's with 4.5 backspacing and 275/60/15's.

70C10, byrd said that there would be a 3/4" increase in spacing. Did you see that with the GMCPaul kit?

ChevLoRay,
Thanks for the info. Dig your truck. I see a 'Nam decal on there. If you were there, Thank You for your service!

Now I think I will write "I have 15" x 8" rims a thousand time on the chalkboard.....

70c10 · 01-17-2008, 05:17 PM

Quote:

Originally Posted by tcb-1

70C10, byrd said that there would be a 3/4" increase in spacing. Did you see that with the GMCPaul kit?

..

Yes. I don't know the exact amount but they are pushed out further.

01-16-2008, 08:02 AM	#1
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Corvette Rallyes and Disc Brakes?? Does anyone have this combination of wheels and brakes? I have 15", 6 lug, 10" wide 'Vette Rallyes and I am going to pick up a front disc brake kit from GMCPauls. I am wondering if I am going to have any clearance problems. anyone know??? Has anyone used the GMCPaul's kit??? Thanks! __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

01-16-2008, 10:47 AM	#2
northerngmc Registered User Join Date: Jan 2004 Location: Whitehorse YK Canada Posts: 2,651	Re: Corvette Rallyes and Disc Brakes?? From what I have read on here it depends on the inside of your wheels. There was a post last spring with a diagram showing the difference on the inside of the wheel. __________________ Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is!

01-16-2008, 10:54 AM	#3
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Re: Corvette Rallyes and Disc Brakes?? Ask 70c10. He used the kit from GMCPauls.... __________________ 1997 GMC Sierra Ext 1965 Mustang

01-16-2008, 11:16 AM	#4
69c10step Registered User Join Date: Mar 2007 Location: Carroll County, MD Posts: 165	Re: Corvette Rallyes and Disc Brakes?? This is from GMCPauls site Attached Images __________________ '69 short step with dreams of being a hot rod You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.

01-16-2008, 11:52 AM	#6
alfeefish Registered User Join Date: Feb 2005 Location: Harrison TN Posts: 183	Re: Corvette Rallyes and Disc Brakes?? I ground my calipers on the out side. It gave me the clearance I needed.

01-16-2008, 11:56 AM	#7
ChevyDude Senior Member Join Date: Jun 2003 Location: Westminster, CO Posts: 3,071	Re: Corvette Rallyes and Disc Brakes?? Corvette Rally's disc brakes...yup!!! Attached Images __________________ Alex 1971 Lil' Red 350 SBC 700R4

01-16-2008, 01:08 PM	#9
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: Corvette Rallyes and Disc Brakes?? I have ECE 6-lug disc conversion on my truck, and I am running Wheel Vintique vette-style rallye wheels. On the front, I have 15x8's with a 4-inch backspace. The rears are 15x10's with a 5-inch backspace. Th9ey clear without any problems. On the other hand, I have a '96 GMC with dropped spindles from DJM. I cannot run the stock wheels on the front, nor can I run a wheel with a 4-inch backspace, if I am running 15-inch diameter wheels. Larger diameter wheels won't be a problem. Just don't have extra funds at the moment and my tires are newly-installed on the custom wheels I already had. __________________ 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.

01-16-2008, 01:51 PM	#10
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: Corvette Rallyes and Disc Brakes?? I have 15" x 10" wides all the way around with 275/60's. Didn't want the front to track wider though.......I have just enough to tuck the tires on bumps with an additional 2.5" drop. Hope it all works out. 70C10, were you happy with GMCPau'l's kit?? ChevLoRay, happy with the ECE?? Here the setup I have at this point. __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

01-17-2008, 07:56 AM	#11
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: Corvette Rallyes and Disc Brakes?? I'm a bit paranoid now! So a disc brake conversion is going to cause the rims to set further out??????? Remember, I have 10" wide rims with a 4" backspace. __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

01-17-2008, 01:08 PM	#13
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: Corvette Rallyes and Disc Brakes?? I am quite satisfied with my ECE components. I added some NAPA stuff to the mix and have a completely rebuilt front suspension. Yes, the change from drums to discs on these trucks will add to width of the front track. When I did mine, I was running 15x8's with too much backspace. I swapped them for a pair of 15x7's that I was running on another '69, and solved the problem of tires that came into contact with the fenders and wheel openings. By the way, are you SURE that the wheels you are running are 10-inches wide? The just don't look like they should if they are, like they have a heckuva offset to the inside. I'm running 10-inch wide wheels on the rear of my truck, with 8-inch wide wheels on the front. Rear has a 5-inch backspace. Front has a 4-inch backspace. I have had zero problems with this setup. As an aside, I have to run 15x7's on the front of my '96, with a 3.5-inch backspace, to clear the lower control arms with the inside of my wheels. Attached Images __________________ 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. Last edited by ChevLoRay; 01-17-2008 at 01:14 PM.

01-17-2008, 03:45 PM	#15
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: Corvette Rallyes and Disc Brakes?? Holy crap, I am an idiot! All of you are right! I have 15 x 8 rims. I have no clue why I thought they were 10's! I chalk this screw up to know sleep due to a 9 month old son!!!!!!!! Okay clear the page. I have 15 x 8's with 4.5 backspacing and 275/60/15's. 70C10, byrd said that there would be a 3/4" increase in spacing. Did you see that with the GMCPaul kit? ChevLoRay, Thanks for the info. Dig your truck. I see a 'Nam decal on there. If you were there, Thank You for your service! Now I think I will write "I have 15" x 8" rims a thousand time on the chalkboard..... __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

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