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1994 K3500 extended cab dually

Again just AWESOME...
I am waiting on an exhaust blanket then going to use a thermal barrier on the intake cobrahead also, perhaps build an air-box until I do the snorkel then it has to be a canister filter to prevent water ingress.

My build is one step forward a few steps back, my expensive transmission build got crapped on by a failed TCC solenoid causing torque converter lockup and stall at idle "some clutch burning" changed that out. The TCC is designed to be locked in all gears however; the vehicle must be moving to engage it in 1st gear.
Now have to buy another 48RE valve body and hopefully salvage the one in the trans now, it will only shift when cold by releasing the throttle "sticking valves I suspect, hate to think it is warped" once warmed the trans shifts fine.

Wow! You have so much time invested in that transmission! I hope the damage is minimal and you are able to get it working correctly without too much trouble.

Do actually use lockup in 1st gear, or did you just build it so you could if you wanted? With the Tahoe, I wanted lockup in first, but that was really just a bandaid for the torque converter that was in it. I'm hoping I'll be much happier with this Hughes converter I have in here.
 
Oh, yesterday I also got the blend door actuator replaced. @Duvall it wasn't bad to swap out with the radio and glove box removed. If those were installed, it would be a real bear to get to I imagine. Now my HVAC system is working properly so I can charge the AC soon.
 
Yes, you can make the lights parking and signal. Which mirrrors are you using? If they are the new K2XX mirrors you need to take them apart to seperate the outside amber from the in glass signal. From there you need to diode the LEDs so they can be fed from both the parking and signal circuit (this is what I did http://i307.photobucket.com/albums/nn305/88gmctruck/Random Pile O Crap/ParkingSignalLEDWiring.jpg)

David was very helpful
 
Wow! You have so much time invested in that transmission! I hope the damage is minimal and you are able to get it working correctly without too much trouble.

Do actually use lockup in 1st gear, or did you just build it so you could if you wanted? With the Tahoe, I wanted lockup in first, but that was really just a bandaid for the torque converter that was in it. I'm hoping I'll be much happier with this Hughes converter I have in here.
I am driving it "no slippage" run high pressure max amount of clutches which increases pressure even more and when it shifts you feel it...
The 48RE can be programmed to lockup in all gears up/or down works great w/exhaust brake.
Put it in low lock it and pull a house down.
 
I got some bright LEDs for the turn signals today.

51D89852-F378-4219-B705-0E20EF3AAC58.jpeg

They made a good difference in the amount of light coming through the lenses. The LEDs are in the passenger side and brand new Phillips 2357NA bulbs are in the driver side in the video below.


The turn signals did hyperflash once installed so I installed the electronic flasher I bought with the bulbs.

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This is a video of the signal flashing after the installation of the electronic flasher.


These are the part numbers I bought.

F46AF1C2-E114-4247-ACFE-29988AC849EE.jpeg
 
Tonight I just about finished something I’ve been working on a couple days: the airbox for the cold air intake.

I started earlier this week making a cardboard template from old boxes that fit pretty well.

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Last night I transferred that to a single sheet of thick card stock that added flanges for mounting and made my final tweaks. Once I was satisfied with that iteration I transferred the design to some .050” thick aluminum sheet and cut it out. I had ordered some weatherstripping from McMaster-Carr so I put some of that on the bottom edge to see how it would seal against the inner fender. It worked really nice. Much better than caulking it to the inner fender like I had with the Tahoe. This can be easily removed if ever needed. That’s where I finished up last night.

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Tonight I finished the install. I drilled and screwed the air box to the core support and the fender. Then I had to relocate the headlight relays. When I installed those before, I mounted then where they’d have plenty of room with the air cleaner running parallel to the core support, but now that I’m running it perpendicular, it hit the relays, so I had to move them. Ideally I’d move them somewhere else, but the length of the current wiring doesn’t give me many options, so I mounted them to the inside of the air box. The relays and plugs are water tight, so they’ll be fine here.

469AB988-924B-4778-93AC-F8DC80248BBD.jpeg

Once that was done it was time to install the air filter and plumbing. Then I formed the flap that extended the air box to the radiator hold down. Finally I added another strip of weatherstripping to the top edge of the box to seal against the hood. Now it is basically complete.

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All I have left to do is find something to plug the inside of the fender to keep the hot engine air from getting into the air box. Once I have this installed for a while and decide I’m happy with it, I plan to add a layer of Tunnel Shield to it on the engine side to insulate it from engine heat. Overall I’m happy with how it turned out - it looks good and it’s sealing most hot air out of the intake tract.
 
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