Toyota Tundra 3UR-FE 8HP90 Project

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Joined: 01 May 2023, 09:59

Toyota Tundra 3UR-FE 8HP90 Project

Post by BlueReaperX »

I have a Twin Turbo Tundra (+1000WHP on E85) that I daily drive. I'm using a Haltech Elite 2500 with a PD16 to run the engine.

I'm currently running an upgraded stock transmission with a high stall converter, but I can't trans brake and it takes 100s of ms to shift. This is limiting my 60' times significantly not to mention it generates a lot of heat when the converter is unlocked which makes me believe it's not very efficient in delivering power from the engine to the wheels.

I was looking to swap in a Turbo 400 or a powerglide but those ancient transmissions are a pain to daily drive so I decided to go the 8HP route.

I got an 8HP90 out of wrecked 2018 Hellcat. Transmission dimensions are close to the stock transmission. Being a truck, I have a lot of room to work with, so no problem there. I'm currently working with Domi-works to develop an adapter. Transmission mount and driveshaft can be done locally.

The Turbolamik TCU I got from with their basic kit, wiring harness and a DCT shifter. I think I have everything I need ordered and in progress.

Once the transmission is mated to the engine and working properly, I will then get the Stage 3 Pure Drivetrain Solution 8HP90 with the high stall converter. It's rated at 2000HP which is overkill for my 1500HP target but will give me ease of mind.

I contacted Turbolamik on Instagram and they told me they think the TCU should work on a Dodge 8HP90. Has anyone here tried it on one or any other 8HP90/95s?

I hope I don't run into many issues with the swap. I'll keep the thread updated as I go through with the project.
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