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 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 02-09-2016, 09:14 PM   #1
72 K20
Registered User
 
72 K20's Avatar
 
Join Date: Mar 2011
Location: Brandon,Iowa
Posts: 391
72 C20 rear end

I have a 72 C20 , originally a 402 TH400, coil spring truck. it has a Dana rear end.

My question is concerning brakes.

What determined what size brakes were installed on these trucks ?

Was it engine ? trans ? coil or leaf spring ?

I noticed that the brake shoes are listed by spring style and are 2 different sizes ,,, why would spring style dictate brake size ?

Thank you in advance for any and all information !

Have a great day !

Tom
72 K20 is offline   Reply With Quote
Old 02-09-2016, 09:38 PM   #2
davepl
Registered User
 
davepl's Avatar
 
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
Re: 72 C20 rear end

For 1972:

C/K10s are 11x2" rear brakes
C/K20s are 11x2.75"
C30s are 13x2.5"

This is from the GM Heritage Center information:

https://www.gmheritagecenter.com/doc...olet-Truck.pdf
__________________
1970 GMC Sierra Grande Custom Camper - Built, not Bought
1969 Pontiac 2+2 427/390 4-speed Coupe
1969 Pontiac 2+2 427/390 4-speed Convertible
davepl is offline   Reply With Quote
Old 02-09-2016, 10:12 PM   #3
72 K20
Registered User
 
72 K20's Avatar
 
Join Date: Mar 2011
Location: Brandon,Iowa
Posts: 391
Re: 72 C20 rear end

Napa and Rock auto both list
w/ Coil Springs;w/ 11 5/32" X 2 3/4"

w/ Leaf Springs;w/ 12" X 2.5" Brakes

Wow ! More confusion .................
72 K20 is offline   Reply With Quote
Old 02-09-2016, 10:30 PM   #4
kwmech
Senior Member
 
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,499
Re: 72 C20 rear end

Dana axle more than likely to have the 12'' brakes
kwmech 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 06:15 AM.


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