braking problem '83 K10 w 14bff - The 1947 - Present Chevrolet & GMC Truck Message Board Network

nikwho · 01-03-2011, 05:20 PM

I have an '83 K10 with 3/4 axles swapped onto it. Its got a corporate 10 bolt in the front and a 14 bolt full floater in the rear w/ drum brakes. I was told that the axles were from a "comparable year" 3/4 truck. Truck was as is when I bought it. I am assuming that it has the stock K10 proportioning valve. My problem is that my rear brakes will lock up very easily with what feels like very little if no braking to the front. has, a couple of times, stalled the engine while braking in gear. Even with just the slightest push of the brake pedal. Makes for some interesting driving characteristics! Its a nightmare(ok, sometimes kind of fun) in the snow! Any thoughts? I was thinking that maybe its a proparitioning valve issue. Thanks for the help guys
Nik

BIG V · 01-04-2011, 12:09 AM

buy the mastercylinder for a 1983 3/4 ton with jb8 brakes

big_b · 01-04-2011, 01:42 AM

sounds like you have front brake issues, like they are not working or barely working. you may have air in the lines but it may also be the calipers are siezed. around here calipers for these trucks are only like $20.00 each. worth replacing if suspect. i had a truck once and the inside of the flexible hoses had actually collapsed not letting any brake fluid to pass through to let pressure through to the calipers.
also if you suspect the proportioning valve they say to give it a hard spike, like jump on the brake pedal as hard as you can to reset it. ive never had any luck with that because most times there is something else wrong.

rblcori7 · 01-04-2011, 07:02 AM

from what im reading your rear drums are locking up correct....

If so go down to autozone and buy new wheel cylinders... my truck was doing the same thing and i did a complete brake job shoes, cylinders, springs and all... i have not had the problem since

01-03-2011, 05:20 PM	#1
nikwho Registered User Join Date: Apr 2010 Location: Flagstaff, AZ Posts: 974	braking problem '83 K10 w 14bff I have an '83 K10 with 3/4 axles swapped onto it. Its got a corporate 10 bolt in the front and a 14 bolt full floater in the rear w/ drum brakes. I was told that the axles were from a "comparable year" 3/4 truck. Truck was as is when I bought it. I am assuming that it has the stock K10 proportioning valve. My problem is that my rear brakes will lock up very easily with what feels like very little if no braking to the front. has, a couple of times, stalled the engine while braking in gear. Even with just the slightest push of the brake pedal. Makes for some interesting driving characteristics! Its a nightmare(ok, sometimes kind of fun) in the snow! Any thoughts? I was thinking that maybe its a proparitioning valve issue. Thanks for the help guys Nik __________________ '59 Apache - 383" SBC/TH-350 '68 GMC - BBC/TH400

01-04-2011, 12:09 AM	#2
BIG V Registered User Join Date: Jul 2009 Location: Northern California Posts: 411	Re: braking problem '83 K10 w 14bff buy the mastercylinder for a 1983 3/4 ton with jb8 brakes __________________ 1991 Chevy suburban 3/4 ton 4x 4:56 and pulls great 1979 Chevy 1/2 ton long bed diesel 1974 Chevy crew cab short bed 3/4 ton 4x4 project 1991 Chevy suburban 2wd 1984 Chevy suburban 3/4 ton 4x 6.5 detroit with turbo 1961 Chevy pickup 1/2 ton 2wd 1975 gmc crew cab short bed 2wd

01-04-2011, 01:42 AM	#3
big_b Registered User Join Date: Oct 2010 Location: Capital City B.C Posts: 59	Re: braking problem '83 K10 w 14bff sounds like you have front brake issues, like they are not working or barely working. you may have air in the lines but it may also be the calipers are siezed. around here calipers for these trucks are only like $20.00 each. worth replacing if suspect. i had a truck once and the inside of the flexible hoses had actually collapsed not letting any brake fluid to pass through to let pressure through to the calipers. also if you suspect the proportioning valve they say to give it a hard spike, like jump on the brake pedal as hard as you can to reset it. ive never had any luck with that because most times there is something else wrong.

01-04-2011, 07:02 AM	#4
rblcori7 Registered User Join Date: Jun 2010 Location: Tyndall AFB FL Posts: 214	Re: braking problem '83 K10 w 14bff from what im reading your rear drums are locking up correct.... If so go down to autozone and buy new wheel cylinders... my truck was doing the same thing and i did a complete brake job shoes, cylinders, springs and all... i have not had the problem since __________________ 84 Short bed 350: Hooker headers, flow master 40 series, edelbrock Intake manifold, Holly street avenger carb, 4 inch skyjacker suspension lift, 33x12.5 Toyo Open Country Mud Terrains, 3.73 gears 2011 Silverado LTZ



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