![]() |
|
![]() |
#1 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
1971 k20 badmax
I bought a 71 c20 in 2014. Loved the truck but I was always wishing I had a 4x4. It was too nice of a truck to mess with so I sold it to my stepdad with plans to get it back later on and have money for my build.
I had previously had a thread on here but I failed to keep it updated so I am going to redo it here. I bought a pretty rough 1971 K20 with plans to do a decent frame off with a nice, reliable power plant. Ideas flew around and I ended up with a Duramax. Here's the build my friends.
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build Last edited by Rednwhitec20; 07-08-2017 at 02:44 AM. Reason: Rename |
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
I fixed my frame rust and slapped some paint on her. Rebuilt the axle and put her together. Then she went to the corner for a drive line removal.
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#4 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
Out she came along with stock springs. I traded for a 6" skyjacker. She then went to get her first round of bodywork, which I wasn't impressed with.
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
Then I bought my engine, trans, and transfer case along with the brains. I cleaned and slapped a fast paint job on the engine, then I sent my harness and computers off to make it all work. Harness was simplified by Ken Wolkens, and it looks pretty good. My ECM and TCM received tuning from Pela Motorsports. And some more bodywork.
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#6 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
|
Re: 1971 k20 badmax
Your truck has progressed a long ways! Congrats!
__________________
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. |
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
Some more body work and then we sat the engine and tranny in. Thank you sir!
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
Then she was headed off to a friends shop until it drives. I bought a HP Dana 60 that still needs to be installed. I also found a nice tailgate. I then decided I needed a beefier cross member. So I had a friend make this animal.
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#9 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
I snagged up my favorite, Welds! Wrapped in 37's. I also got a somewhat economical vehicle. Then bought a used t-case and had it rebuilt and slapped it in. Wiring has begun, and they put in my super beefy crossmember.
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#10 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
And this is where I am currently in the build. I went ahead and bought a 14 bolt 11.5" one ton rear so I had more meat out back and I got discs on all 4 corners.
![]()
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build Last edited by Rednwhitec20; 07-11-2017 at 11:56 PM. |
![]() |
![]() |
![]() |
#11 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
|
Re: 1971 k20 badmax
Very nice! You will not regret doing the AC now!
![]()
__________________
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. |
![]() |
![]() |
![]() |
#12 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
Oh I know! Now that I have a car that finally has AC, I am hooked!
![]() Driveshaft is in the truck but I forgot to take a picture. 1480 u-joint at the case and a 1410 u-joint at the rear. Pretty beefy. The inter cooler plumbing is in as well. Steering column is about to be put in. Getting a new rag joint. Then once the AC gets wired I will have some piping for my turbskie. ![]()
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#13 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
|
Re: 1971 k20 badmax
Skip the rag joint and go with a Jeep XJ shaft to eliminate the rag joint IMO.
__________________
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. |
![]() |
![]() |
![]() |
#14 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
Well, he's starting to get moving on it and I have no extra money.
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#15 |
Registered User
Join Date: Apr 2012
Location: Chatt Tn
Posts: 970
|
Re: 1971 k20 badmax
you can get the xj shaft for $10-15. best mod ever
__________________
88 military v30 crewcab shortbed 5.9 cummins, nv4500, 205 86 k30, 89 diesel burb, 76 gmc pathfinder 71 longbed 5.3 4l80 http://67-72chevytrucks.com/vboard/s...d.php?t=522535 |
![]() |
![]() |
![]() |
#17 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
Well I ordered my AC today through vintage air! Im pretty excited about it. Can someone buy my Dana 44 so I can get this 60 built
![]()
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#18 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
|
Re: 1971 k20 badmax
If he wants to sell another let me know. I need one for my 76. I stole it off and gave it to a friend. Now it is steerless.
![]()
__________________
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. |
![]() |
![]() |
![]() |
#19 | |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
Quote:
Does anyone have a cheaper was to draw fuel from a 1/2" line other than a sump?
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
|
![]() |
![]() |
![]() |
#20 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
Intercooler piping mocked up with stainless. Blue tape is where she'll be welded, but both of his Tig machines are down for now. Until Lincoln can get him a new machine it'll probably be connected by boots and clamps.
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#21 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
|
Re: 1971 k20 badmax
I'd see if you can find some one to weld them first. How far from Pittsburgh Kansas are you? There's a board member that lives there that could probably weld these for you. What kind of tank are you using? A draw straw is a lot cheaper and can be obtained a lot of places. I use 1/2" ones in all my builds most times.
__________________
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. |
![]() |
![]() |
![]() |
#22 | |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
Quote:
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
|
![]() |
![]() |
![]() |
#23 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
I've been busy lately with moving down to college and such. I managed to sell my 3/4 ton axles, so now it's time to rebuild the Dana 60 front. Now I can have 4wd too. Intercooler pipes are welded but I failed to take a picture.
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#24 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
I've been busy lately with moving down to college and such. I managed to sell my 3/4 ton axles, so now it's time to rebuild the Dana 60 front. Now I can have 4wd too. Intercooler pipes are welded but I failed to take a picture.
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
#25 |
Registered User
Join Date: Jun 2014
Location: Princeton Kansas
Posts: 235
|
Re: 1971 k20 badmax
Well my truck missed the goal of the carshow. But I took the C20, and still had a good time. 2,123 cars were registered in the show, there were some pretty cool cars and trucks there. Anyways, my axle rebuild is slowly coming along since I am only able to work on it on weekends. My Fass lift pump is mounted and he's doing some plumbing for the fuel. A/C is in the works too.
__________________
1971 C20 Daily, Built 350/700R4 1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s K20 Build |
![]() |
![]() |
![]() |
Bookmarks |
Tags |
4x4, diesel, duramax, k20, swap |
|
|