I am converting my 14bff to discs with diy4x brackets and 3/4 ton calipers and rotors from summit. Any one have a suggested source for hoses/banjo bolt connections? Do I just buy 3/4 ton front hoses? I don't see how those would mate up to my axle lines though. I have watched a bunch of disc conversion videos, some of which were real good but none covered this part.
CK5
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Disc conversion hoses
- Thread starter aceroth
- Start date
I've got the ORD rear axle hose kit and I love it.
Also, if you don’t have the calipers already, change to some 1/2 ton ones. The piston is smaller and better for the conversion.
Also, keep everything in case you want to switch back to drum.
Also, keep everything in case you want to switch back to drum.
I'm running 3/4 calipers on mine. Is there a specific year on the 1/2 tons? The ones I just searched on O'Reilly for both 1/2 and 3/4 had a 2.95" piston.
I think I just went off an '83 for all my stuff to keep it the same as my model year. Ive got 3/4 ton front and 1/2 ton rear but my rear was still way over braking. I had to add a disc/disc prop valve and a manually adjustable one and I almost turn the rear all the way off to get it to not spin circles on wet or icy roads. I am running a big bore P30 4 wheel disc master cylinder though.
Got a part number or year for the P30? Bore size? Vacuum or hydro?
My blazer is an '83 6.2L diesel with hydroboost so I did an '83 Chevy P30 with diesel engine and hydroboost and front and rear disc brakes. This one bolts right on. And it has the aluminum reservoir. https://www.napaonline.com/en/p/NMA...+Master+Cylinder&keywordInput=master+cylinder It has a 34 mm bore and the factory one for my blazer had a 30 mm bore.
There's more to it than just 1/2 ton vs. 3/4 ton.
The earlier (70's-ish) calipers are the same between 1/2 and 3/4 ton with the smaller piston. Sometime in the 80's they started offering a bigger caliper with some GVW packages on 3/4 tons, if you use a mid 80's K20 for application you'll see both options. As mentioned, the bigger pistons is sometimes less desirable because it can make the rear brakes lock up easier (depending on what front brakes the truck has, the weight bias front/back, how soft the springs are, etc.).
