The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-02-2012, 01:30 PM   #1
75chev4x4
Registered User
 
75chev4x4's Avatar
 
Join Date: May 2012
Location: Estacada, Oregon
Posts: 254
14 bolt ff drum size

Hey guys I'm ordering the brakes for my 75 k20 on the 14 bolt ff rear do I need the 11" or the 13" shoes? Anyway to tell without taking the drums off?
75chev4x4 is offline   Reply With Quote
Old 11-02-2012, 02:47 PM   #2
1985-GMC
Chevy Enthusiast
 
1985-GMC's Avatar
 
Join Date: Jul 2009
Location: Canyon Lake Texas
Posts: 2,024
Re: 14 bolt ff drum size

The 13" drums almost touch the inside of the wheels, the 11" you will have a lot of room.
Classicindustries.com was the cheapest I found for the 11" drums, it looks like they are $129.99 each for the 13" for your truck; I don't know what they are anywhere else.

edit: Oh never mind it looks like you just need shoes.
__________________
Tony
1985 GMC K2500 restoration Project: Rust, White & Blue
1989 Chevy R3500 CC Cummins & 4X4 swap some day...
1989 Burb (D60, 14BFF, 12V, NV4500, NP205, 37" tires in progress)
1985-GMC is offline   Reply With Quote
Old 11-02-2012, 03:04 PM   #3
75chev4x4
Registered User
 
75chev4x4's Avatar
 
Join Date: May 2012
Location: Estacada, Oregon
Posts: 254
Re: 14 bolt ff drum size

Haha that's ok. I think I have the 13" cause they look huge.
75chev4x4 is offline   Reply With Quote
Old 11-02-2012, 03:37 PM   #4
Billy81
Registered User
 
Billy81's Avatar
 
Join Date: Jun 2004
Location: Medford,Oregon
Posts: 390
Re: 14 bolt ff drum size

If your drum looks like this one than you have 13" brakes.
__________________
Billy81 is offline   Reply With Quote
Old 11-06-2012, 08:34 PM   #5
mrhino
Account Suspended
 
Join Date: Aug 2007
Location: USA
Posts: 1,223
Re: 14 bolt ff drum size

I ditched my heavy drums for some discs. shaved off about 80lbs and saved a little money over replacing the drums, hardware, wheel cylinder and shoes.



mrhino is offline   Reply With Quote
Old 11-06-2012, 08:44 PM   #6
78longbox4speed
Registered User
 
Join Date: Nov 2012
Location: spokane washington
Posts: 6
Re: 14 bolt ff drum size

howd you do the disc swap?
__________________
78' c20 longbox 350/4-speed-current truck
1976 k20 400/t350 ~sold
1980 k20 350/4-speed ~sold~ missed dearly!
78longbox4speed is offline   Reply With Quote
Old 11-06-2012, 08:47 PM   #7
Skunksmash
Registered User
 
Skunksmash's Avatar
 
Join Date: Sep 2012
Location: TX
Posts: 1,014
Re: 14 bolt ff drum size

80lbs holy cow
Skunksmash is offline   Reply With Quote
Old 11-07-2012, 08:21 AM   #8
BigBlocksRule
Registered User
 
Join Date: Jun 2008
Location: Lubbock, TX
Posts: 2,047
Re: 14 bolt ff drum size

Quote:
Originally Posted by 78longbox4speed View Post
howd you do the disc swap?
Yeah, inquiring minds want to know!!!
BigBlocksRule is offline   Reply With Quote
Old 11-07-2012, 11:43 AM   #9
Firebirdjones
Registered User
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
Re: 14 bolt ff drum size

What are you doing for an ebrake MrHino? That doesn't look like a caliper that is capable.

OP, if you have a full floater, then it should be the larger 13" brakes. I believe it's the semi float that has the smaller 11".
Firebirdjones is offline   Reply With Quote
Old 11-07-2012, 12:07 PM   #10
1985-GMC
Chevy Enthusiast
 
1985-GMC's Avatar
 
Join Date: Jul 2009
Location: Canyon Lake Texas
Posts: 2,024
Re: 14 bolt ff drum size

No both 11" and 13" came on the full floaters, and they both came on the semi floaters too. It depended on what braking option the truck had.
__________________
Tony
1985 GMC K2500 restoration Project: Rust, White & Blue
1989 Chevy R3500 CC Cummins & 4X4 swap some day...
1989 Burb (D60, 14BFF, 12V, NV4500, NP205, 37" tires in progress)
1985-GMC is offline   Reply With Quote
Old 11-07-2012, 12:08 PM   #11
mrhino
Account Suspended
 
Join Date: Aug 2007
Location: USA
Posts: 1,223
Re: 14 bolt ff drum size

Quote:
Originally Posted by Skunksmash View Post
80lbs holy cow
Sorry I think it was more like 50, now that I think about. 80 was what it weighed per side or something like that. I did the swap about a year ago and my memory is slipping with age.

Quote:
Originally Posted by 78longbox4speed View Post
howd you do the disc swap?

Quote:
Originally Posted by BigBlocksRule View Post
Yeah, inquiring minds want to know!!!
Post 50 of my crusader build thread is where i started the disc swap http://67-72chevytrucks.com/vboard/s...d.php?t=493324

Quote:
Originally Posted by Firebirdjones View Post
What are you doing for an ebrake MrHino? That doesn't look like a caliper that is capable.
no ebrake, dont use em here in the rust belt. cause more problems than there worth.
mrhino is offline   Reply With Quote
Old 11-07-2012, 01:34 PM   #12
Firebirdjones
Registered User
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
Re: 14 bolt ff drum size

Quote:
Originally Posted by mrhino View Post
no ebrake, dont use em here in the rust belt. cause more problems than there worth.
Yikes! Not an option for me. I use my truck to tow, can't be using that whimpy parking pawl in the trans to hold the rig still, not a good idea.

Used to live in the rust belt myself (SW Ohio). What issues are you having? I never had a problem. I've always kept the ebrake cables lubed during regular service intervals.
Firebirdjones is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:23 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com