1968 Disc Brake Conversion Rim Clearance - The 1947 - Present Chevrolet & GMC Truck Message Board Network

383gmc · 01-19-2016, 09:33 PM

I want to do a disc brake conversion on my 1968 C10. I want to keep my wheels, but I'm not sure if they'll clear. Can someone tell me if these will clear? They are 15x8 with ~3.75 backspacing. Thanks

firedemon · 01-19-2016, 10:16 PM

unless you got some crazy oversize rotors should work fine those rims are for newer trucks with disk brakes

**Elliot949** · 01-20-2016, 07:24 AM

I agree these should work fine as long as you are staying with the stock diameter rotors...

383gmc · 01-20-2016, 10:49 AM

Great, thanks!

67ChevyRedneck · 01-20-2016, 11:36 AM

Those should be good with that backspacing and stock parts. With mine I had 4.5" BS and had to grind a tiny bit off the edges of the calipers for clearance. Just put them on and spin 'em as a double check.

68Gold/white · 01-20-2016, 11:51 AM

You should be fine. Those rally wheels will clear. If you had those 5" wide stock wheels that came on 67-70 pickups, they might be a problem...

Stock rotors and spindles keep everything on the safe side.

A lot of folks don't have knowledge of the 6 lug disc conversion, a smart move in my opinion. I have a 67 and 68, but want to convert both to 5 lug, mostly because I have the stock parts...

lutronjim · 01-20-2016, 06:38 PM

Saw your response to '1968 Disc Brake Conversion Rim Clearance' thread about rims being late model truck's. Can you tell me what models?

I am putting front disk on a 70 C10 via a 77 'K' member and will put 6 lug rotors on front. I need rims that will clear.

Thanks

**Elliot949** · 01-20-2016, 08:23 PM

Quote:

Originally Posted by lutronjim

Saw your response to '1968 Disc Brake Conversion Rim Clearance' thread about rims being late model truck's. Can you tell me what models?

I am putting front disk on a 70 C10 via a 77 'K' member and will put 6 lug rotors on front. I need rims that will clear.

Thanks

That's a tough one... 6 lug disc brake wheels are hard to come by...

lutronjim · 01-23-2016, 07:39 PM

I'm a little confused. 383gmc's picture is a 6 lug rim. firedemon said they were from late model trucks with disk.

So late model rims would or wouldn't fit?

midniteblues · 01-23-2016, 08:56 PM

i think he was pullin yer leg.
any 6 lug chevy wheel after 71-72 will fit.
there is a very slight differnce in the shape of the older(70 and back) drum brake 6 luggers that wont clear on disc brakes.
most common are the 4x4 rally wheels. but there are steelies out there but if ya ask me they are not as common as rally wheels.

lutronjim · 01-26-2016, 07:26 PM

Thanks
From what I read most later models GM's will have the tire too close to the inside and not good.

01-19-2016, 09:33 PM	#1
383gmc Registered User Join Date: Sep 2003 Location: Sandy, UT Posts: 11	1968 Disc Brake Conversion Rim Clearance I want to do a disc brake conversion on my 1968 C10. I want to keep my wheels, but I'm not sure if they'll clear. Can someone tell me if these will clear? They are 15x8 with ~3.75 backspacing. Thanks Attached Images

01-19-2016, 10:16 PM	#2
firedemon Registered User Join Date: Jun 2015 Location: @ Posts: 890	Re: 1968 Disc Brake Conversion Rim Clearance unless you got some crazy oversize rotors should work fine those rims are for newer trucks with disk brakes

01-20-2016, 07:24 AM	#3
Elliot949 Registered User Join Date: Sep 2010 Location: Winfield, Ks. Posts: 4,162	Re: 1968 Disc Brake Conversion Rim Clearance I agree these should work fine as long as you are staying with the stock diameter rotors... __________________ Dan Johnston... Owner of My Dad's- '67 Chevy C-20 Custom Camper Short Fleetside Pickup PAPA J And our newest addition a- '71 Chevy CST/10 Short Fleetside Pickup Haulin' SOLD Papa J's Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=612847 Haulin's Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=671130SOLD B Bears Build Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=744210

01-20-2016, 10:49 AM	#4
383gmc Registered User Join Date: Sep 2003 Location: Sandy, UT Posts: 11	Re: 1968 Disc Brake Conversion Rim Clearance Great, thanks!

01-20-2016, 11:36 AM	#5
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: 1968 Disc Brake Conversion Rim Clearance Those should be good with that backspacing and stock parts. With mine I had 4.5" BS and had to grind a tiny bit off the edges of the calipers for clearance. Just put them on and spin 'em as a double check. __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

01-20-2016, 11:51 AM	#6
68Gold/white Registered User Join Date: Sep 2011 Location: Ark City, Kansas Posts: 3,405	Re: 1968 Disc Brake Conversion Rim Clearance You should be fine. Those rally wheels will clear. If you had those 5" wide stock wheels that came on 67-70 pickups, they might be a problem... Stock rotors and spindles keep everything on the safe side. A lot of folks don't have knowledge of the 6 lug disc conversion, a smart move in my opinion. I have a 67 and 68, but want to convert both to 5 lug, mostly because I have the stock parts...

01-20-2016, 06:38 PM	#7
lutronjim Registered User Join Date: Dec 2013 Location: Dunwoody,Ga Posts: 443	Re: 1968 Disc Brake Conversion Rim Clearance Saw your response to '1968 Disc Brake Conversion Rim Clearance' thread about rims being late model truck's. Can you tell me what models? I am putting front disk on a 70 C10 via a 77 'K' member and will put 6 lug rotors on front. I need rims that will clear. Thanks

01-23-2016, 07:39 PM	#9
lutronjim Registered User Join Date: Dec 2013 Location: Dunwoody,Ga Posts: 443	Re: 1968 Disc Brake Conversion Rim Clearance I'm a little confused. 383gmc's picture is a 6 lug rim. firedemon said they were from late model trucks with disk. So late model rims would or wouldn't fit?

01-23-2016, 08:56 PM	#10
midniteblues Registered User Join Date: Jul 2011 Location: strausstown pa Posts: 3,394	Re: 1968 Disc Brake Conversion Rim Clearance i think he was pullin yer leg. any 6 lug chevy wheel after 71-72 will fit. there is a very slight differnce in the shape of the older(70 and back) drum brake 6 luggers that wont clear on disc brakes. most common are the 4x4 rally wheels. but there are steelies out there but if ya ask me they are not as common as rally wheels. __________________ 81 camaro 355 4/spd 342 posi my first love. 67 swb step 454/4spd ott 373 posi 4/7 drop. 2000 s10 zr2 little blue truck that never gets stuck. '74 heald super bronc vt8. tecumseh powered moon rover.

01-26-2016, 07:26 PM	#11
lutronjim Registered User Join Date: Dec 2013 Location: Dunwoody,Ga Posts: 443	Re: 1968 Disc Brake Conversion Rim Clearance Thanks From what I read most later models GM's will have the tire too close to the inside and not good.



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