The Mad 72 k20
 

I have been reading this forum for years. Lots of great info on this site. Finally decided to start my build thread. So here we go. I bought this 72 k20 from a friend. My friend owned it for several years he decided to take it all apart and have the engine rebuild and the truck painted. Well the guy that was supposed to paint it painted about 1/4 of it and skipped town. The truck sat for about 8 or 9 years. I tried my hardest to get the truck. Finally 1 and 1/2 years ago he sold it to me.

Re: The Mad 72 k20
 

Would love to add some photos can anyone help me understand how to.

Re: The Mad 72 k20
 

If you upload them to photobucket it will be easier to copy/paste them

If they are online already, just click the tan box at the bottom of this page with the little mountain on it, and insert the URL/Web address there!

Re: The Mad 72 k20
 

This is what it looked like when I first brought it home.

Re: The Mad 72 k20
 

Nice color!

Re: The Mad 72 k20
 

Well I pulled it the rest of the way apart. The paint was peeling off in quite a few spots. I pulled the 402 big block sold it. I had a 5.3 out of a 2000 silverado that I was going to use In a jeep project. (had to sell jeep to pay for this project )

Re: The Mad 72 k20
 

This is my 5.3 when I brought it home.

Re: The Mad 72 k20
 

Sandblasted cab

Re: The Mad 72 k20
 

Sandblasted cab

Re: The Mad 72 k20
 

Nice start

Re: The Mad 72 k20
 

I pulled the 5.3 apart looked looked really good. No cylinder ridge took crank to the machine shop it was perfect just a polish. I replaced the rings and bearings cam bearings. I also got a takeout 2000 ls1 camshaft off of eBay. Also replaced oil pump lifters and timing chain.

Re: The Mad 72 k20
 

The motor going together

Re: The Mad 72 k20
 

Motor

Re: The Mad 72 k20
 

decided to redo my own harness what a pain in the butt.

Re: The Mad 72 k20
 

Howdy neighbor! I'm on board for your build - been through one 72 K20 myself. Best, Pete

Re: The Mad 72 k20
 

Time for a little paint. Just inside the cab and firewall inside of doors.

Re: The Mad 72 k20
 

Few more paint pictures

Re: The Mad 72 k20
 

I modified my stock crossmember to make it fit with the deep oil pan. I also got some fbody ls exuast manifolds off of eBay.

Re: The Mad 72 k20
 

Pictures of cab going on and cab on motor is a little tight but I didn't want to mess with drive lines.

Re: The Mad 72 k20
 

your thread is great I read the whole thing a couple of times. What part of MT?

Re: The Mad 72 k20
 

Thanks! I'm just down the street in Kalispell. Happy to help with parts or whatever else I can.

Re: The Mad 72 k20
 

That's awesome I work in kalispell.

Re: The Mad 72 k20
 

Got inner fenders ac box and brake booster on Started with my wiring .

Re: The Mad 72 k20
 

Sorry the pics are sideways.

Re: The Mad 72 k20
 

Found some more pictures of the truck From when I first brought it home.

Re: The Mad 72 k20
 

Looking good!

Re: The Mad 72 k20
 

I have been really busy working on wiring and doing some dash work.

Re: The Mad 72 k20
 

Coming together nicely! Just a heads-up. GM painted the top of the dash to match the dash pad and with a flat finish to reduce glare. My orange K20 with a parchment interior had a black dash pad and the dash top was painted a flat black.

Re: The Mad 72 k20
 

Being a big 519 fan, dark yellow or an orange that has always been a question for me as well. Either way it looks good!
But being a serious numbers guy there is something that comes to mind.
The door data plate decodes for a C20 4x2 truck and it has clearly replaced/no-factory rivets.
Being as the chassis is a 4x4 I must ask do any of the numbers match your title and will that be a problem?

Re: The Mad 72 k20
 

The #s do match the title not sure exactly when it was converted.

Re: The Mad 72 k20
 

Subscribed. I have a 1970 K20 that I just purchased and a huge K20 fan.

Looking forward to seeing your progress.

Take care and have fun,
Tom

Re: The Mad 72 k20
 

Great so you are on top of that. Its a hard question to ask but I hate to see people with a project they can't title. Or even worse have it impounded during a VIN verification.

Re: The Mad 72 k20
 

I want to post a link to YouTube can someone help me out please.

Re: The Mad 72 k20
 

Got the inside of fenders painted. Took me all weekend to hang the doors and fenders. I bought a repo passanger side not doesn't fit very well.

Re: The Mad 72 k20
 

Wondering what all the other ls swappers are doing with the steam vent line. I have a stock 72 radiator.

Re: The Mad 72 k20
 

Little update. I ended up using the radiator out of the donor truck. Fits pretty well. Also bought a couple of electric fans off of eBay.

Re: The Mad 72 k20
 

well I've been really busy at work and with family time. I got first coat of primer on with guide coat. Also got it all blocked out should be putting second coat of high build primer on tonight.

Re: The Mad 72 k20
 

Sweet!

Re: The Mad 72 k20
 

Made the stupid mistake of masking with cheap plastic drop cloth. Overspray flaked off and was floating everywhere when I was shooting 2nd coat of high yield.

Re: The Mad 72 k20
 

Looking Sweet, good progress!