![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
All about them K’s
![]() Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,374
|
I Need some frame advice
I'm tearing my K/20 down as we speak to begin the restoration. I've got it down to the bare frame except for the 465/205 and drive shafts. In the picture you can see the area circled in red. This area is twisted. The front cab mount is pulled down some. Like an idiot I didn't think to measure the distance of the mount to the ground to compare to the other side. It's at the shop I work at so I won't be there again till tomorrow. On this same side the frame rail cracked up by the steering box and was repaired but it wasn't welded straight so the frame horn isn't straight. In the red section the top and bottom of the rail is visually not paralell. My questions are 1) should I cut the frame loose up front by the crack before I start to straighten the twist or should I leave it and fix it after the twist. 2) any suggestions on how to get the twist out? A new frame isn't an option, long k frames are hard to come by any more and this one has 0 rust. I have not "x"d the front of the frame yet to see exactly where things are at yet. Any suggestions appreciated.
Tyler ![]()
__________________
Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's ‘87 IROC-Z all original 50K mile survivor TPI 305 IROC Blue ‘10 Camaro 2SS/RS Aqua Blue Metallic #93 -version 2.0 ![]() Last edited by 57taskforce; 02-27-2017 at 11:31 PM. |
![]() |
![]() |
![]() |
#2 | |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,487
|
Re: I Need some frame advice
Quote:
I would take it to a frame shop and have it done on a frame machine. I'm sure there will be more problems than you can see with the naked eye.... Just my 2 ¢ worth. LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
|
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Dec 2014
Location: Buck creek, sc
Posts: 90
|
Re: I Need some frame advice
x2
|
![]() |
![]() |
![]() |
#4 |
Registered User
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 1,137
|
Re: I Need some frame advice
The factory chassis service manual has all of the frame measurements for checking a frame. It explains how to check for twists in the frame, etc. It also has a section on how to weld the frame if needed. My frame was also damaged at the gear box & had been welded at some previous point. Whoever welded it did a good job as far as penetration goes but did not line up the frame ear. I cut the weld out, re-aligned the ear & welded again. It was 3/4" high before, ended up about 1/16" out. The ears were also spread. I also added the factory frame brace for the gear box (I believe only 72? not sure) & used sections of frame left over from shortening frame to further brace the ear (last pic) Don't have a good pic of the finished ear.
As far as the twist goes, the frame is very flexible after you take everything off. I think I would remove everything, put a brace in at one end right where the twist starts, then bolt or weld a long piece of metal (3" channel by 6' long) at the other end of the twist & use it for leverage to twist the frame back. (or brace both ends & straighten from the middle) Because the crack at the box is not near the twist I don't think it matters which you do first. Someone here made the service manuals available as PDF's can't remember who, you might want to search for them. |
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 1,137
|
Re: I Need some frame advice
I was eating dinner while posting, LocDoc & Lowbucktrucks posted while I was typing, what they said is the best option.
|
![]() |
![]() |
![]() |
#6 | |
All about them K’s
![]() Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,374
|
Re: I Need some frame advice
Quote:
__________________
Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's ‘87 IROC-Z all original 50K mile survivor TPI 305 IROC Blue ‘10 Camaro 2SS/RS Aqua Blue Metallic #93 -version 2.0 ![]() |
|
![]() |
![]() |
![]() |
#7 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
|
Re: I Need some frame advice
Honestly, a good frame guy can probably have it fixed in half a day and your bill may not be too bad. If you have sufficient ways of securing the frame to put proper pulls and pushes on it, I'd consider doing it your self. But it requires plenty of anchor points etc. I used to straighten light duty clear up to heavy duty frames. It sure is an art. I didn't think so when I first started doing it.
![]()
__________________
Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
![]() |
![]() |
![]() |
Bookmarks |
|
|