Concerning Conversion to Disc Brakes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Billy G · 08-20-2003, 06:34 AM

Ive asked this question in another forum...thought I'd post here also.

In time, I want to convert the 70 GMC to disc brakes. I thought I'd stay with the 6-lug package, 2 1/2 drop spindles, ect...this will occur in the future.

My question concerns, If I buy new wheels to fit the drums I have now, will they fit the disc brakes when I convert? If not, I'll look at keeping the stock wheels for now.

I'd really appreciate any suggestions/comments.

Thanks yall

Billy G

PS *Jason is my 16 yr old son*

__________________

**GMCPaul** · 08-20-2003, 08:46 AM

If you are buying aftermarket wheels no problem they are all now designed to work with disc brakes. The only thing to watch for is if you buy aluminum rims mount one and measure distance from back of rim to caliper, then add the width of caliper and make sure whoever balances the rim gets this measurement and knows not to place the stick on weights between these measurements as if they do the weight will rub on backside of caliper as wheel rotates.
GMCPaul

pa_snowman · 08-20-2003, 09:53 AM

what 6 lug disks are you using? where did you get them from? I have a 67 and want to keep the 6 lug but have disks?

Billy G · 08-20-2003, 08:53 PM

Paul...thank you for replying. The info is greatly appreciated. You also have a PM.

Snowman....The disc brakes are 'in the future' as of now. Im just trying to get the truck 'driveable' for my son.

Thanks yall!!!

Billy G

Billy G · 08-20-2003, 08:55 PM

Well Paul....maybe NOT a PM coming your way. I understand why....or I THINK I do

Billy G

pa_snowman · 08-21-2003, 09:12 PM

billy, i understand wanting to get you truck ready for your son. my son wants to rebuild my truck, he's close to it. he was with me when we wrecked it and it saved us from getting hurt. the truck took the impact by loosing its right suspention and bending the frame. the only thing that happened to us is the small scratch he got from the mirror bolt on his wrist. NO NEW TRUCK COULD TAKE THAT!!
(oh yea thr 23 ft trailer we were pulling was also destroyed, but the 67 mustang on it didn't get a scratch)

good luck on the upgrade

xextr3m3 · 08-23-2003, 03:27 AM

what about something like a early 90's chevy IFS rotor and some older monte carlo calipers,

not really sure about the front, but it cold work in the rear

pa_snowman · 09-02-2003, 11:07 PM

just thought i'd check in to see if anyone had any updates to their disk upgrades....

well......................

boraxman · 09-03-2003, 12:07 AM

Well im starting to gather parts for my '70. Picked up some used rotors today along with dust shields $70 total but one rotor was to thin so back to the yard tomorrow for exchange. I think im going to order the McGaughy spindles as it will be the simplest way for me to go. Im just wrapping up the rear end which includes new posi/gears, 5 lug axles, heavy duty drum brakes. All to be topped off with new Centerline wheels. Lots of work to do yet.

Injected68LS1 · 09-03-2003, 02:27 AM

boraxman, where did you get your 5 lug axles? Are you happy with them? I'm changing over soon too so I'm interested in how that change went. Good luck with the brakes.

boraxman · 09-03-2003, 09:16 AM

Ive been dealing with this guy in Mission Hills w/ 30+ years experince. He got the axles brand new @ $120 each. He charged me $150 labor to completely set up the whole rear end. That was out of the truck. Let me know if you want his name and number, I have his card at home.

Injected68LS1 · 09-03-2003, 10:50 AM

Cool. I'll let you know. Thanks

TooMany2count · 09-04-2003, 01:42 PM

http://hotrodders.com/forums/showthr...threadid=22176 take a look at this page, lots of disc brake info........joe

08-20-2003, 06:34 AM	#1
Billy G Registered User Join Date: May 2003 Location: Dayton, Tx (in Old River) Posts: 286	Concerning Conversion to Disc Brakes Ive asked this question in another forum...thought I'd post here also. In time, I want to convert the 70 GMC to disc brakes. I thought I'd stay with the 6-lug package, 2 1/2 drop spindles, ect...this will occur in the future. My question concerns, If I buy new wheels to fit the drums I have now, will they fit the disc brakes when I convert? If not, I'll look at keeping the stock wheels for now. I'd really appreciate any suggestions/comments. Thanks yall Billy G PS Jason is my 16 yr old son __________________ __________________ My FAMOUS LAST WORDS...."Ima Gonna!!" - 1970 GMC 1500 swb/step 250 I-6 3 spd - "The GEM" - 1976 Chev Scotsdale swb/step 350/350 - "The JEWEL" - 1982 Chev C-10 swb/step 250 I-6 3 spd - - 2001 Chev Silverado LT -

08-20-2003, 08:46 AM	#2
GMCPaul Senior Member Join Date: Mar 2000 Location: Rockville,In. USA Posts: 3,718	If you are buying aftermarket wheels no problem they are all now designed to work with disc brakes. The only thing to watch for is if you buy aluminum rims mount one and measure distance from back of rim to caliper, then add the width of caliper and make sure whoever balances the rim gets this measurement and knows not to place the stick on weights between these measurements as if they do the weight will rub on backside of caliper as wheel rotates. GMCPaul __________________ Secure Online Catalog for-GMCPauls Truck Parts Email- GMCPAULS@GMAIL.COM

08-20-2003, 09:53 AM	#3
pa_snowman Registered User Join Date: Aug 2003 Location: Meyersdale, PA Posts: 144	what 6 lug disks are you using? where did you get them from? I have a 67 and want to keep the 6 lug but have disks? __________________ jim gallagher

08-20-2003, 08:53 PM	#4
Billy G Registered User Join Date: May 2003 Location: Dayton, Tx (in Old River) Posts: 286	Paul...thank you for replying. The info is greatly appreciated. You also have a PM. Snowman....The disc brakes are 'in the future' as of now. Im just trying to get the truck 'driveable' for my son. Thanks yall!!! Billy G __________________ My FAMOUS LAST WORDS...."Ima Gonna!!" - 1970 GMC 1500 swb/step 250 I-6 3 spd - "The GEM" - 1976 Chev Scotsdale swb/step 350/350 - "The JEWEL" - 1982 Chev C-10 swb/step 250 I-6 3 spd - - 2001 Chev Silverado LT -

08-20-2003, 08:55 PM	#5
Billy G Registered User Join Date: May 2003 Location: Dayton, Tx (in Old River) Posts: 286	Well Paul....maybe NOT a PM coming your way. I understand why....or I THINK I do Billy G __________________ My FAMOUS LAST WORDS...."Ima Gonna!!" - 1970 GMC 1500 swb/step 250 I-6 3 spd - "The GEM" - 1976 Chev Scotsdale swb/step 350/350 - "The JEWEL" - 1982 Chev C-10 swb/step 250 I-6 3 spd - - 2001 Chev Silverado LT -

08-21-2003, 09:12 PM	#6
pa_snowman Registered User Join Date: Aug 2003 Location: Meyersdale, PA Posts: 144	billy, i understand wanting to get you truck ready for your son. my son wants to rebuild my truck, he's close to it. he was with me when we wrecked it and it saved us from getting hurt. the truck took the impact by loosing its right suspention and bending the frame. the only thing that happened to us is the small scratch he got from the mirror bolt on his wrist. NO NEW TRUCK COULD TAKE THAT!! (oh yea thr 23 ft trailer we were pulling was also destroyed, but the 67 mustang on it didn't get a scratch) good luck on the upgrade __________________ jim gallagher

08-23-2003, 03:27 AM	#7
xextr3m3 Registered User Join Date: Aug 2003 Location: Fremont, CA Posts: 96	what about something like a early 90's chevy IFS rotor and some older monte carlo calipers, not really sure about the front, but it cold work in the rear __________________ 62 c10 short fleet 350/350 dropped 87 toy: SAS 35" MT/R's, 5.29's, detroit rear, exocage

09-02-2003, 11:07 PM	#8
pa_snowman Registered User Join Date: Aug 2003 Location: Meyersdale, PA Posts: 144	just thought i'd check in to see if anyone had any updates to their disk upgrades.... well...................... __________________ jim gallagher

09-03-2003, 12:07 AM	#9
boraxman Keepin an eye out Join Date: Feb 2003 Location: So.Cal Posts: 3,921	Well im starting to gather parts for my '70. Picked up some used rotors today along with dust shields $70 total but one rotor was to thin so back to the yard tomorrow for exchange. I think im going to order the McGaughy spindles as it will be the simplest way for me to go. Im just wrapping up the rear end which includes new posi/gears, 5 lug axles, heavy duty drum brakes. All to be topped off with new Centerline wheels. Lots of work to do yet. __________________ 1970 Chevy C10 SWB 5.3 1996 Toyota Tacoma SR5 4x4 2007 Vespa GTS 250 Scooter ZIP 91351

09-03-2003, 02:27 AM	#10
Injected68LS1 Registered User Join Date: Jul 2003 Location: So. Cal. Posts: 389	boraxman, where did you get your 5 lug axles? Are you happy with them? I'm changing over soon too so I'm interested in how that change went. Good luck with the brakes. __________________ 1968 Chev SWB with 1998 Corvette LS1 305hp and 320 ftlb to the wheels (stock engine!) AEM EMS and wideband O2 sensors Bowtie Overdrive's 700R4, stage 3 Baer 4 wheel discs and 20s http://iciclelanding.com/aperture?album=2049&view=album

09-03-2003, 09:16 AM	#11
boraxman Keepin an eye out Join Date: Feb 2003 Location: So.Cal Posts: 3,921	Ive been dealing with this guy in Mission Hills w/ 30+ years experince. He got the axles brand new @ $120 each. He charged me $150 labor to completely set up the whole rear end. That was out of the truck. Let me know if you want his name and number, I have his card at home. __________________ 1970 Chevy C10 SWB 5.3 1996 Toyota Tacoma SR5 4x4 2007 Vespa GTS 250 Scooter ZIP 91351

09-03-2003, 10:50 AM	#12
Injected68LS1 Registered User Join Date: Jul 2003 Location: So. Cal. Posts: 389	Cool. I'll let you know. Thanks __________________ 1968 Chev SWB with 1998 Corvette LS1 305hp and 320 ftlb to the wheels (stock engine!) AEM EMS and wideband O2 sensors Bowtie Overdrive's 700R4, stage 3 Baer 4 wheel discs and 20s http://iciclelanding.com/aperture?album=2049&view=album

09-04-2003, 01:42 PM	#13
TooMany2count Who's in CHARGE?????????? Join Date: Nov 2002 Location: Cahokia, IL Posts: 455	http://hotrodders.com/forums/showthr...threadid=22176 take a look at this page, lots of disc brake info........joe __________________ Send a card to a soldier in Iraq My Music PlayList Large Marge Donate Blood,Plasma,Platelets & sign your DONORS CARD & SAVE a LIFE



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