86 C10 LS 6.0 6L90E Swap

[Minuteman99]

I like the way your ride has come together. Nice truck. I have read through your thread, and maybe I just missed it, but what steering column do you have? And how do you have the OD off button and the electric shift button set up? I haven't started a thread yet, but am in the process of swapping an L83/6L80E into my old Jimmy C15.
I appreciate your thread

[kidd79]

Originally Posted by Minuteman99

I like the way your ride has come together. Nice truck. I have read through your thread, and maybe I just missed it, but what steering column do you have? And how do you have the OD off button and the electric shift button set up? I haven't started a thread yet, but am in the process of swapping an L83/6L80E into my old Jimmy C15.
I appreciate your thread

Thanks bro. It's been a long process and there's still more to do. The steering column is original to the 86. There's no OD off button or electric shift buttons. Just put it in drive with the old column shifter and let the trans do the rest is where it's at right now. I've heard of people running paddle shifters with the 6L80 trans

[phillipm]

Did you keep the air box and intake from the Silverado? I'm hoping to find a used one.

[kidd79]

Originally Posted by phillipm

Did you keep the air box and intake from the Silverado? I'm hoping to find a used one.

No sir. Unfortunately I didn't. The donor truck has been parted out from the rest if it's useable parts and dispersed among the masses. Wish I could have helped you out bro

[kidd79]

Update. They got the truck running and somewhat driving.. Ish. The wiring harness would not let the computer talk to the trans computer, and we couldn't communicate/tune the motor computer. So. We all stopped, took a step back and figured we would go to another shop. Took the truck to lethal performance in Knoxville. Those guys rewired the truck with a completely New harness made specifically for this particular setup. Pulled the motor computer and the trans computer, had those sent off to get programmed to communicate with each other. Found out the first computer was for a manual trans and could not be reprogrammed for the 6L90E. Having to get another computer that's more suitable for the setup. Fun fun fun. But hopefully all my trials and tribulations will help someone in the future.

[phillipm]

No worries. Worth a shot!

[kidd79]

Update. Everything is working on the dash board. Both computers talk to each other and now has a working baseline tune in it. Unfortunately we can't go any further. The transmission decided to lose reverse gear, and start slipping in between the forward gears before we could dyno and do the finish tune. Sadly to say, I have spent all of my car funds on this project, and am not able to move forward with this... And if I'm being honest, this project has completely gutted me of my love for square body trucks. I full on hate this stupid truck now and get disgusted every time I see it. Sorry guys..Probably won't be very many more update posts on this particular build. Sorry if i let any of you down.

[daddyjeep]

Originally Posted by kidd79

Update. Everything is working on the dash board. Both computers talk to each other and now has a working baseline tune in it. Unfortunately we can't go any further. The transmission decided to lose reverse gear, and start slipping in between the forward gears before we could dyno and do the finish tune. Sadly to say, I have spent all of my car funds on this project, and am not able to move forward with this... And if I'm being honest, this project has completely gutted me of my love for square body trucks. I full on hate this stupid truck now and get disgusted every time I see it. Sorry guys..Probably won't be very many more update posts on this particular build. Sorry if i let any of you down.

Step back for a bit, maybe some time away will get you back into it. It is going to be awesome when its done. Don't let someone else enjoy all of your hard work until you have at least enjoyed it for a while first.

[kidd79]

Originally Posted by daddyjeep

Step back for a bit, maybe some time away will get you back into it. It is going to be awesome when its done. Don't let someone else enjoy all of your hard work until you have at least enjoyed it for a while first.

It will be awesome when it's finally done. Though I can't see the light at the end of the tunnel. I wish I had the skills needed to fix it. If I did, it would be done already. I hate having to farm stuff out and wait on others to do it for me. Sigh.

[smpoulin01]

Just read the entire post, don't lose faith!!!!! Take it from all of us that have been in that spot, you will always wish you had kept it! And then a few years from now will start another one. The squares get in your blood and never leave!

[Jake Wade]

Didn't you just have the transmission reworked? Warranty?

[MTCK]

Ah bummer sorry to hear this. It's never easy doing something uncommon and I have a hard time staying motivated if I can't occasionally drive a project so I get it. Good luck with the sale.

[kidd79]

Originally Posted by MTCK

Ah bummer sorry to hear this. It's never easy doing something uncommon and I have a hard time staying motivated if I can't occasionally drive a project so I get it. Good luck with the sale.

Thanks bro. The first person to throw 30k at me gets it. I'll even deliver within 600 miles. Lol

[Puzzled]

Hello all, i have a 86 gmc truck, developed a ac problem blower won't blow except on low low if switched to high position will blow high if you thump the relay, and will blow if you come off high to medium will not blow high again till relay is thump and it dont take big thump just barely touch it and it will blow, have replaced blower motor, relay, resistor, cleaned and relocate ground, in the spring put new ac panel assembly on with switch don't know what else or where to start next anyone any ideas. Thanks

[kidd79]

Originally Posted by Puzzled

Hello all, i have a 86 gmc truck, developed a ac problem blower won't blow except on low low if switched to high position will blow high if you thump the relay, and will blow if you come off high to medium will not blow high again till relay is thump and it dont take big thump just barely touch it and it will blow, have replaced blower motor, relay, resistor, cleaned and relocate ground, in the spring put new ac panel assembly on with switch don't know what else or where to start next anyone any ideas. Thanks

Sounds like you probably have a bad connection in the plug to your relay for the blower.

[destructiondylan]

I've been through the whole thread and I couldn't find if you said what mount you used between the trans and the hooker crossmember? Doing this same swap and need to know what isolator you used. Did it come with the crossmember? Thanks

[kidd79]

Originally Posted by destructiondylan

I've been through the whole thread and I couldn't find if you said what mount you used between the trans and the hooker crossmember? Doing this same swap and need to know what isolator you used. Did it come with the crossmember? Thanks

No sir. It didn't come with the hooker cross member. It's a standard energy suspension trans mount for any th400, 4l60e, 6l80e. I don't have the part# off the top of my head. Two bolts that mount to the trans, one stud that mounts to the cross member. Hope that helps you bro. "A" lol. ;-)

[destructiondylan]

Originally Posted by kidd79

No sir. It didn't come with the hooker cross member. It's a standard energy suspension trans mount for any th400, 4l60e, 6l80e. I don't have the part# off the top of my head. Two bolts that mount to the trans, one stud that mounts to the cross member. Hope that helps you bro. "A" lol. ;-)

Helps a lot. That's exactly the insulator I was looking at and was hoping it's the one you used. I'll get it ordered!

[kidd79]

Originally Posted by destructiondylan

Helps a lot. That's exactly the insulator I was looking at and was hoping it's the one you used. I'll get it ordered!

Awesome! Happy to help out buddy!!

[kidd79]

Been cleaning up things under the hood a bit. Watched a couple youtube videos on how to bend tubing. I think it turned out ok for my first time.

[kidd79]

Called the guys over at Little Shop MFG and got a set of their stock size wilwood front disc dual piston caliper brakes. considering they are "stock" replacements installation was quick and easy. Had to get a conversion hose to adapt the trucks hard line to the wilwood caliper, but that was straight forward too. They have them in stock. And yes, I have the dust shields installed. Was mocking things up to see how they fit while waiting for new dust shields to show up in the mail.
Also went on and ordered the caltracs. Man.. Those things definitely helped out a ton!!!

[kidd79]

Got tired of not having any reverse lights since the cadillac tail lights don't have them installed, so I got creative. They don't put out a ton of light, but at least people can see them when I'm backing up.

[MTCK]

Looks great. Does it hook up better now?

[kidd79]

Originally Posted by MTCK

Looks great. Does it hook up better now?

Yessir. It's way better now, and it's not as noticeable at higher speeds when it down shifts and spins the tires under full throttle. If I were to run some softer tires the tire spinning at hwy speed would probably go away.

[aggie91]

Nice work on the hydroboost hard lines. One of the best installs of that system I have seen.