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73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => Topic started by: jpegb on June 10, 2007, 12:10:53 pm

Title: will 73 k10 frame be a dead match to 79 k20?
Post by: jpegb on June 10, 2007, 12:10:53 pm: i have located a 73 k10 frame and i need to know definately if it will match perfect to my 79 k20. any help would be appreciated. thanks john
Title: Re: will 73 k10 frame be a dead match to 79 k20?
Post by: Captkaos on June 10, 2007, 10:41:00 pm: Yes. For swap purposes, frames are pretty much identical from 1973-1980 and 1981-1987.
Title: Re: will 73 k10 frame be a dead match to 79 k20?
Post by: xtremjeepn on June 11, 2007, 02:03:08 am: FWIW the only difference I have seen is that K30 frames are 8" thick while K10/K20 frames are 6" thick.
Title: Re: will 73 k10 frame be a dead match to 79 k20?
Post by: jpegb on June 11, 2007, 09:14:04 am: i know the difference on the 6 inch 3/4 ton and 8 inch 1 tons. i was just wodering if i will find a problem during a changover with 73 k10 and my 79 k20
Title: Re: will 73 k10 frame be a dead match to 79 k20?
Post by: Captkaos on June 11, 2007, 11:43:27 am: What all are you changing over? All the bracketry and suspension or just axles/drivetrain/body?
If you are just swapping bodies and/or axles, there will be no issues.
Title: Re: will 73 k10 frame be a dead match to 79 k20?
Post by: jpegb on June 12, 2007, 11:49:43 pm: i have a 79 k20 4x4.needs frame work. im putting a body from 79 1 ton 2wd on it, considering frame change because my forward front leaf hangers are shot and i cant find them, and or attach them riveted correctly. i cant use my 2wd 1 ton frame and i have access to a 73 4x4 frame
Title: Re: will 73 k10 frame be a dead match to 79 k20?
Post by: Blazin on June 13, 2007, 09:25:46 pm: Why not just swap over the spring hangers from the K 10 frame, bolt them onto the K 20 frame. Use grade 8 hardware. They don't have to be riveted. In my opinion bolts are better. Semi frames are bolted together and they take allot more torque / abuse than any 3/4, or 1 ton can dish out. I have bolted every cross member and bracket into several Chevy frames and a couple Fords too. They held up just fine.
Title: Re: will 73 k10 frame be a dead match to 79 k20?
Post by: Captkaos on June 14, 2007, 02:01:27 pm: I agree, a good Grade 8 bolt will hold just as well as the rivets. I would just take them off and swap them...
Title: Re: will 73 k10 frame be a dead match to 79 k20?
Post by: jpegb on June 21, 2007, 09:20:45 am: i cant swap spring forward leaf spring hangers because 1 of my frames is a 1 ton 2 wheel drive which has coil springs in the front.my originals are totally wasted. the 73 k10 frame i have access to is 5 hours from my home ($300)and not worth driving just for hanger parts.anybody know where to get the hangers? i know i can get new ones still but the 1 that holds the radiator support is discontinued.