Brake size 11" or 13 ?
- Thread starter Wolverine
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Radiohead
Reducing tire diameter 1000 revolutions at once
- Joined
- Mar 17, 2022
- Posts
- 1,814
- Reaction score
- 5,912
- Location
- Low Earth Orbit
- First Name
- Eric
- Truck Year
- MCMLXXIX
- Truck Model
- C-20 Silverado Camper Special
- Engine Size
- 454 crazy cubes, or 7.4 luscious litres
Drum diameter
nvrenuf
Full Access Member
- Joined
- Jul 30, 2010
- Posts
- 1,716
- Reaction score
- 1,922
- Location
- Mobile, Al.
- First Name
- John
- Truck Year
- 1991
- Truck Model
- K5
- Engine Size
- 454
If 13” is a choice I’d bet you or the parts guy is looking at a full floater. I could be wrong but I don’t believe 13” was available on the semi floater.
Grit dog
Full Access Member
- Joined
- May 18, 2020
- Posts
- 5,942
- Reaction score
- 9,831
- Location
- Washington
- First Name
- Todd
- Truck Year
- 1986
- Truck Model
- K20
- Engine Size
- 454
Same here. Semi floater with big back brakes. Stops well!
Probably the same since same color and all…lol.
Nice looking truck!
Probably the same since same color and all…lol.
Nice looking truck!
fast 99
Full Access Member
- Joined
- Dec 31, 2021
- Posts
- 1,618
- Reaction score
- 2,187
- Location
- Spokane, Washington
- First Name
- Brian
- Truck Year
- 81,85
- Truck Model
- K20
- Engine Size
- 350
FYI both of my K20 4x4's were 13" and not floaters. I converted one to floater for safety reasons and wider shoe.
Ontheboulder
Full Access Member
- Joined
- Feb 27, 2022
- Posts
- 310
- Reaction score
- 365
- Location
- colville,wa
- First Name
- greg
- Truck Year
- 1987
- Truck Model
- gmc sierra classic v2500
- Engine Size
- 350
my 87 has the 11" brakes,full float 14 bolt
oldretiredafguy
Full Access Member
- Joined
- Apr 20, 2020
- Posts
- 1,412
- Reaction score
- 3,205
- Location
- N. Texas
- First Name
- Mike
- Truck Year
- 1988, 1988, 1991, 1983
- Truck Model
- GMC V-Jimmy, GMC Suburban 4WD, GMC Suburban 4WD, GMC-2500 CrewCab
- Engine Size
- 350, 350, 350, 350
FWIW: This chart will decipher what your brake system is by the RPO code on your build decal.
You must be registered for see images attach
Last edited:
oldretiredafguy
Full Access Member
- Joined
- Apr 20, 2020
- Posts
- 1,412
- Reaction score
- 3,205
- Location
- N. Texas
- First Name
- Mike
- Truck Year
- 1988, 1988, 1991, 1983
- Truck Model
- GMC V-Jimmy, GMC Suburban 4WD, GMC Suburban 4WD, GMC-2500 CrewCab
- Engine Size
- 350, 350, 350, 350
Just looked at my 1986 3/4 ton build sheet. It has the C6P option, but no listing for brakes. I'm going to assume that the C6P package included the HD brake package.
Similar threads
