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11-22-2007, 07:11 AM
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#1 |
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Registered User
Join Date: Apr 2007
Location: Kalamazoo, Michigan, USA
Posts: 538
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k20 brake lines
I am looking at getting new brake lines for my k20 project, most places don't list complete sets for a k20. Are the lines for a k10 that much different? couldn't I just use a k10 set and adapt and differences there might be? I know my other option is to buy a coil of tubing and fittings and bend my own but buy the time I buy a bender and flaring tool I could just buy a pre bent set.
Jeff
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1970 K20, 350--- SOLD 05 silverado extended cab short box- duramax Jeep wrangler unlimited |
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11-22-2007, 09:43 AM
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#2 |
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Post Whore
 
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,686
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Re: k20 brake lines
I can't imagine that the brake lines would be any different between a K10 and K20. No physical difference between their frames so they ought to be identical. Course, that's just my opinion.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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11-22-2007, 10:19 AM
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#3 |
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glamoros piece o' lowlife
Join Date: Mar 2007
Location: Redford, MI
Posts: 1,164
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Re: k20 brake lines
Hey Jeff, a double-flaring tool you can rent from damn near any parts store, it will cost you lie $25 which you get back when you return it, of course. Bending tool is cheap too, I use a small one that bends up to 5/16 lines and it was like $5-6 or so, works great. I've done the rear brake line of my Lincoln like that, and also the complete brake system of my truck, tis real easy. Another thing - prebent lines cannot be installed with engine still in the truck, they go in the C-channel of the frame between the two parts of the engine crossmember, judging bu how hard it was to slide in a short piece of line there I can imagine installing a complete rear brake line being a major PITA.
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The more I drink, the more I drink, the more I drink... diesel, reg cab, long bed, 4 across the rear, single stack, wooden stakes, and lotsa lights - the Hay Express |
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11-22-2007, 11:37 AM
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#4 |
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Registered User
Join Date: Apr 2007
Location: Kalamazoo, Michigan, USA
Posts: 538
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Re: k20 brake lines
Yukon- that's kind of what I was thinking, how much of a difference could there be.
Ivan- I'll check into bending my own a little more, as for the engine being in the way, my truck is a bare frame right now. Hopefully I'll get the axles back under it this weekend. I want to get the brake lines in before I drop the engine back in.
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1970 K20, 350--- SOLD 05 silverado extended cab short box- duramax Jeep wrangler unlimited |
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11-27-2007, 10:57 PM
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#5 |
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Registered User
Join Date: Oct 2007
Location: Wendell, Idaho
Posts: 608
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Re: k20 brake lines
Don't know if this helps, but c10 break lines are smaller in diameter than k20 lines. Don't know if its because of 1/2 vs 3/4 ton or 4x4 vs 2x4. I tried to take a set from a 69 c10 and put it on my 67 k20 and no go, to small.
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1969 4x4 Nothing beats a good rock drill and some dynamite |
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11-28-2007, 12:30 AM
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#6 |
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Senior Member
Join Date: Dec 2003
Location: Kingsport TN
Posts: 4,641
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Re: k20 brake lines
I know the booster and master cylinder were different but always thought the lines were the same. If I remember write the lines from the master cylinder are opposite on the k20 the front breaks feed off the back reservoir and rear off the front or vice versa cant remember with out looking that is probably why there was a difference with the lines when you tried it. The lines from the proportion valve to the axles should be the same.
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Earl 68 2500 4x4 GMC Burb |
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11-28-2007, 11:45 AM
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#7 |
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Registered User
Join Date: Aug 2005
Location: Mechanicsburg, PA
Posts: 86
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Re: k20 brake lines
I just replaced the main line from front to rear on my 67 GMC 4x4 with complete drive train in it. I had to cut the old line in 3 pieces to get it out. I used a cheap bender and laid the old lines next to it in the driveway then bent up a new one from a 25' coil. Then slipped the new one in starting at the front just under the bumper and see-sawed it back and forther front to rear until I had it inside the C channel of the frame. After it was installed I then flaired the ends and finished the hook up. The whole process took about 2 hours. The replaced line was about 11' long. It turned out better than I thought it would.
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67 GMC 4x4, 305 V-6, 4-spd 86 S-10, 2.8 2WD LWB 01 Suburban (family hauler) 13 Honda CRV (wife's wheels) 03 Malibu (daughter’s car) |
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11-28-2007, 07:12 PM
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#8 |
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Registered User
Join Date: Oct 2007
Location: Wendell, Idaho
Posts: 608
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Re: k20 brake lines
The line I was trying to replace went across the back axle. On the C10 the lines were smaller daimeter than the ones on the K20 so they wouldn't work.
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1969 4x4 Nothing beats a good rock drill and some dynamite |
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11-29-2007, 11:56 AM
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#9 |
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Senior Member
Join Date: Aug 2005
Location: OKC, OK
Posts: 2,364
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Re: k20 brake lines
We are an Classic Tube dealer and they have a complete brake line kit for '70 K20 LWB. $189 for the full set.
Mike
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Mike Redpath |
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11-29-2007, 03:49 PM
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#10 |
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Registered User
Join Date: Mar 2006
Location: USA
Posts: 21,019
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Re: k20 brake lines
For the price of a pre bent kit I bent my own.I did wait till the truck was all back together though and that made it harder.I can't image spending over $150 on brake lines.I don't know how much I have total in brake lines but probably $135 total in mine including all the fittings and even the soft lines from the frame down to the calipers in front and the "t" on the back axle..This was a complete system from master cylinder down to the front calipers back to the rear axle and on both rear drums.I'm satisfied with it.2wd kits are different,and 67-70 brake lines are different than 71-72s too.
Last edited by 1969k10stepside; 11-29-2007 at 03:50 PM. |
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11-29-2007, 07:51 PM
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#11 | |
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Keepin it runnin!
Join Date: Oct 2007
Location: Deep River, CT
Posts: 1,036
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Re: k20 brake lines
Quote:
Stainless Steel available? Frank
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1970 K-5 4X4 Blazer  1970 K-20 4X4 Long Bed "Liberty Means Responsibility, that is why most men dread it" |
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11-29-2007, 07:56 PM
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#12 |
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Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: k20 brake lines
NAPA has the polyarmour lines that are coated and pliable. I bought some to use as a fuel line.... They are dark green and resist rust like steel...
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The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" Last edited by msgross; 11-29-2007 at 07:56 PM. |
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11-30-2007, 11:00 AM
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#13 | |
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Senior Member
Join Date: Aug 2005
Location: OKC, OK
Posts: 2,364
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Re: k20 brake lines
Quote:
Mike
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Mike Redpath |
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