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#1 |
Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 1971 K20- project just get driveable!!
Also, What line/type of paint did you use?
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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#2 |
Vintage 4x4s
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
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Re: 1971 K20- project just get driveable!!
what i found that would match. Equipment enamel, made by valspar. Cat yellow color is almost a perfect match right out of the quart cans. Nothing special at all.
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ![]() 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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#3 |
Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 1971 K20- project just get driveable!!
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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#4 | |
Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: 1971 K20- project just get driveable!!
Quote:
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Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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#5 |
GEARHEAD
Join Date: Aug 2003
Location: MN
Posts: 6,122
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Re: 1971 K20- project just get driveable!!
Just rub it down with a scuff pad. Looks real good. But it's not a driver yet is it?
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If no one knows what you're doing, they can't tell you you're doing it wrong HG's Dream Car Build - Shelby Cobra Kit Build your own adjustable track bar 71 ![]() 72 ![]() HG's Plow Truck '78 ![]() Bigass Farm Truck HG's thread of miscellaneous stuff |
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#6 |
Vintage 4x4s
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
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Re: 1971 K20- project just get driveable!!
Not yet, need to do the brakes yet. wanted to get box painted before the minnesota winter is here. Im also getting the bumpers, tailgate, and a driver door ready to shoot while weather allows. i really need an indoor place to paint. i can do the brakes in the warm shop anyday. also, i am still debating if i should swap in a temporary front axle or just rebuild the one thats in there. If i swap, it would also have to be rebuilt at some point but at least it would be up and running while i rebuild the original. Maybe its easier to just pull the original and rebuild and let the truck sit while i do...
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ![]() 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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#7 |
Vintage 4x4s
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
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Re: 1971 K20- project just get driveable!!
Results!
![]() Now I need to figure out which rear bumper to run. I like the second one from the left, but it may not be period correct. The one on the right has a shallow area for the plate, so it always got bent. Thinking the one on the left or second to left, any thoughts? ![]()
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ![]() 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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#8 |
Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 1971 K20- project just get driveable!!
Seems so wrong to go and scuff up that nice paint! Though i will admit that it does make it look more "right".
__________________
90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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#9 |
Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: 1971 K20- project just get driveable!!
I think the grey one might be a late 70's ford bumper, it looks much the ford bumper i bought and never put on my truck.. Not that i think anybody would care...
If ya ran a class 3 hitch you wouldn't have to worry about that shallow area?
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Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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#10 |
GEARHEAD
Join Date: Aug 2003
Location: MN
Posts: 6,122
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Re: 1971 K20- project just get driveable!!
If you are going for the classic "look" then use the left 1. Otherwise it really doesn't matter. Most people would never know the difference and it's a work truck that isn't getting parked and judged on the concourse anytime soon.
GET THOSE BRAKES DONE!
__________________
If no one knows what you're doing, they can't tell you you're doing it wrong HG's Dream Car Build - Shelby Cobra Kit Build your own adjustable track bar 71 ![]() 72 ![]() HG's Plow Truck '78 ![]() Bigass Farm Truck HG's thread of miscellaneous stuff |
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#11 |
Vintage 4x4s
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
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Re: 1971 K20- project just get driveable!!
Been busy getting my property ready for winter. Also helping my buddy a little with a 67 GMC K1500 I sold him. We are trying to get the big block V6 in it running, here's a pic of it.
![]() Now back to the Ochre 71- I did get the pinion seal replaced in the D44, seal area on yoke journal did not have any wear! Nice to catch a break. Also I did get the front bumper down to bare metal, straightened it, and primed. The rear is pretty much like new! Both from Teeitup, thanks again Randy. ![]() Getting brake parts ready for rear axle rebuild and brake job. ![]() ![]()
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ![]() 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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#12 |
Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: 1971 K20- project just get driveable!!
I remember that stage..
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Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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#13 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: 1971 K20- project just get driveable!!
Nice work, and nice Deere. Does it burn oil?
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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. |
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#14 |
Still Learning
Join Date: Jul 2009
Location: Central Oklahoma
Posts: 10,108
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Re: 1971 K20- project just get driveable!!
Very nice progress. I like what you did on the bed. Hard work, I can relate.
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#15 |
Vintage 4x4s
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
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Re: 1971 K20- project just get driveable!!
Thanks guys for the compliments, helps keep these drawn out projects going!
Ryan, its a 25 year old oil burner that doesn't burn the oil in the crankcase ![]() ![]()
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ![]() 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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#16 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: 1971 K20- project just get driveable!!
I thought it probably was. Those are some dang nice little tractors. People are still pretty proud of them too!
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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. |
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#17 |
Vintage 4x4s
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
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Re: 1971 K20- project just get driveable!!
Got the old front axle out on Wednesday. Putting the skyjacker setup and good D44HD in today. Then on to the rear axle bearings, and disc setup. All bundled up, its about 20F out now!
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ![]() 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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#18 |
Vintage 4x4s
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
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Re: 1971 K20- project just get driveable!!
First off, I got the front axle in, so that's good. Nice to have lockouts and intact axle shafts!
I also had to grind the rivets off the one upper shock mount since they were loose. I replaced with 2 UNF 3/8" bolts. Then I lost a couple battles this weekend. The first is the driveshaft is too short to connect by about an inch when the axle is hanging down. I verified the springs were symmetric and they are. I am going to put a '72 front driveshaft on. They are about 2 inches longer for some reason! Here is a pic, the top yoke is off the ochre 71 and the one in the middle is off the 72 rusty parts truck. Not sure what the bottom was from. Notice how the front yoke portion is a longer on the 72. The main body is also longer than the 71. I wanted to just swap front portions but the 72 front is too tight on the 71 main body. ![]() The axle looks like its where it should be, about halfway between front and rear of fender opening ![]() Second battle I lost was with the shocks. The fronts have 9 inches of travel and only about 3.75" of that is usable between resting height and fully compressed. I'd like more like 5-6 inches of compressible travel. Similar situation on rear. I ordered these per Summit's website with a search filter of 2.5" lift. Guess I should have just ordered stock height. That would give me about 6" of compressible and 3" of extension which seems ideal. Also thinking I should trim the U bolts down some. Speaking of them, I need to find a torque value for them: ![]()
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ![]() 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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#19 | |
Senior Member
Join Date: Apr 2004
Location: sw colorado
Posts: 2,720
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Re: 1971 K20- project just get driveable!!
Quote:
as for the ubolts, i always make em as tight as i can with an end wrench. then check at 500 miles. and again the next time after that you remember. they will loosen. |
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#20 | |||
Vintage 4x4s
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
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Re: 1971 K20- project just get driveable!!
thx all for torque specs
Quote:
Quote:
Truck on lift, wheels off ground: front- 19.75 bolt to bolt rear- 21.25 bolt to bolt Truck on ground, weight on axles: front- 17.63 rear- 19.13 shocks extended: front-22.75 rear- 26 shocks compressed: front-13.88 rear-15.75 shock travel then ~9 in front and ~10 in rear. axle drop from weighted to hanging is only ~2 in front and rear. so I am thinking ~4 inches of down shock travel and 5 to 6 upwards would be good. Is that what you are shooting for? I guess the design goal would be to have just enough downward to prevent shocks fully extending when axle bounces down and then all the rest would be for compressive travel. Golden question is just how much further (if any) can the axle go than the axle off ground (dangling) dimension? Quote:
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ![]() 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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#21 |
Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: 1971 K20- project just get driveable!!
Per the U-bolts i can get the torque later tonight when i get home from work if nobody chimes in.. But if you have time try searching in this thread for a PDF copy of the service manual.
http://67-72chevytrucks.com/vboard/s...d.php?t=558016 And per the shocks that's the same trouble i have been sorting out, just be sure not to ding them up so they are returnable. If you have not already, after you remove the shocks and with wheels on the ground get a measurement on level ground from eye bolt to eye bolt, that's the static sag, then jack up the truck off the wheels and get that measurement that's fully extended dimension. The formula is posted on my thread to find the remaining usable compression: http://67-72chevytrucks.com/vboard/s...38#post6389138 I really don't know why the drive lines would be different unless they have a manual verses auto tranny or a different transfer case.. So the splines are just to tight to swap the slip yokes? I wonder if its just the diameter of the slip shaft or if its the splines? If its the diameter maybe you could just sand it down a little..
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Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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#22 |
GEARHEAD
Join Date: Aug 2003
Location: MN
Posts: 6,122
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Re: 1971 K20- project just get driveable!!
Torque spec of the axle to spring U-bolts is 120 ft-lbs.
__________________
If no one knows what you're doing, they can't tell you you're doing it wrong HG's Dream Car Build - Shelby Cobra Kit Build your own adjustable track bar 71 ![]() 72 ![]() HG's Plow Truck '78 ![]() Bigass Farm Truck HG's thread of miscellaneous stuff |
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#23 |
Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: 1971 K20- project just get driveable!!
I also found it to be a good idea to use a little oil on my U bolts the nuts didn't wanna rotate smoothly and squeaked without it. just remember lubricated threads actually will get a smidgen tighter than lubricated threads at the same torque setting..
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Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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#24 |
Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: 1971 K20- project just get driveable!!
My book said 120 on the U bolts also, the other book said 150 but that book also covers 73 and later so i think they goofed and omitted the 70-72 truck.
In my research i figure that there is no need for the shock to extend but maybe about 1" past the fully extended measurement on the truck because the springs cannot physically move any further, so for example if you buy a shock that extends to 26" but your extended dimension on the truck is 21" then your going to find that the body of the shock is so long that you loose a lot of compression travel. the shorter the shock extended length the shorter the body, the more compression travel you will get. I think 5-6 compression would be great for my truck but i have a 4" lift. I called a couple places today (yesterday) before i went to work, both of them said for my truck and a 4" lift that my 4.25" front and 4.5 rear should be ok.. I'm still a little skeptical but the only real way to know exactly how much compression your system has is to compress the springs till they bottom, but how? even if you picked up one wheel with a forklift the spring is designed to support the vehicle so that won't work. >>Golden question is just how much further (if any) can the axle go than the axle off ground (dangling) dimension? << This is something i didn't consider, i just assumed the spring would hold its shape but I suppose its possible there could be some kind force that might make it flex outward?of change but i cant imagine it being that much. I would guess about 1" would be ok.
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Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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#25 | |
Senior Member
Join Date: Apr 2004
Location: sw colorado
Posts: 2,720
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Re: 1971 K20- project just get driveable!!
Quote:
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