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Ive always used T400s in all my drag cars. Better to just start with a beefier unit designed for heavy duty use. Good, simple, strong transmission. Bolt right into a G-body with a 200R4 crossmember. Even stock shift linkage bolts right up. Easy swap.

GM used T400s behind big blocks, T350s behind small blocks & six cylinder engines. T400 strongest auto trans made. 36 ft 454 RV that weighed around 18,000lbs had a T400 in it. I wonder how long a T350 would last in that application.

Have a th350 been built has a Hughes manual valve body trans brake when i hit the button can hear the solenoid activating and see the plunger drop but only getting a slight engage. No reverse. When I put it in first it just blows through the foot brake so it's not holding on the trans brake but the solenoid seems to be functioning what would you recommend i look for thank

Very helpful, Thank you

Good history lesson 🙏🏻

Convoys sure can get interesting! It's nice when you can set your own convoy speed.

Man i didn’t realize that about you buddy but it explains how you’re structured and discipline has carried into your business. I’m sure you hear it alot but Jake thank your for your service 1st of all and thank you for all of the information you give idiots like myself on here. My 80E and 400 capabilities wouldn’t be near where they are if it wasn’t for you sharing all you do. And please show some more jump videos and tell us some more stories. Thanks

I have a couple of friends that saw action in the first Gulf war. One of them was a Diesel Mechanic/Top Side Gunner on an A1 Abrams tank. He was at the battle where the Iraq tanks faked a surrender, and turn their tank turrets around when the A1's came into range. The A1's obliterated the Iraq tanks. My younger sisters husband was a nose gunner Marine Core officer in a Cobra Helo at the first Gulf war. He got 32 confirmed kills of Saddam's elite guard when they lit the "mother of all fires" in that ditch that was supposed to win the war. LOL. P.S. I rebuilt a 4L80E with your Stage II kit that will probably live longer than I will.

Very interesting, would love more!

Nice shirt!

No way man, unless that plane is crashing! I bet it was a blast. Also got my level 6 and D3 transbrake. Nice kit, can't wait to test it in a few weeks. Videos coming soon

That's badass🔥🔥

really cool.

Dang brother was this you?? Curious what kinda jump this was

Killer video!!

Adrenaline junkie!

Hell yea

I installed mine and then it was rough while spinning it. Turns out the pump bushing was pushed too far into the pump rotor so I had to press it down a little and then i tightened the bolts for the pump as it was on the converter so I knew it was good and spun free

I’m starting to get reverse delay on my th400 and I feel like it’s loosing power in the beginning of first and third is it just toast? Or is there a way to save it

There are cheap alternative hard parts from coan for the th350 handle lots of power.

Thanks alot

Thanks Jake. Always good info

I learn something from every one of your videos. Thanks!!

I currently run a holley terminator X without transmission control and I am in the process of switching to 4L80. Would I be better off going with a US shift guick 4 over a holley terminator, X that can control my transmission as the one I have currently does not. I ask this question because you mentioned in the video that the holley Terminator X shift strategy leaves some to be desired. Is the shift strategy better in the US shift quick 4? For context my set up makes around 1000 hp in a 3200 pound truck.

I would really like to see a auto trans tuning(Holley) discussion. Cameron Powers has been a huge help the past few years, but it would still be great to hear tuning tech. Thanks for sharing knowledge

I recently rebuilt my early model 4L80E with your stage II kit for a crew cab 4X4 truck. The mistake I made with my 1-2 shift was when I did the TransGo AFL valve bore modification, before I did a full rebuild on my trans, that comes with a spool valve that has an inner and outer spring. I removed the inner spring for a firmer 1-2 shift...that was a mistake on a heavy duty application with a stock torque converter. When I did a complete rebuild on my trans I installed that inner spring back in. That did the trick, and now it shifts right for a truck application. I took that TransGo 3-layer plate and trashed it. I did the internal dual feed, and installed a stock plate that I drilled out all the shift holes to the smallest .031 diameter. I also did all the mods that your stage II kit comes with such as the output roller bearing. My 4L80e will probably live longer than I will.

I wish I knew 10% of what Jake knows about transmissions.

fun times

Needed information 👍🏾👍🏾👍🏾

Will it do anything against the usual Filt of the 80s?

I ran a turbo 350 with a Hughes kit trans break two extra reverse clutches a .060 thick also two two extra direct clutches the stock input drum and input shaft A HD spray in my methanol powered small block 427 NO power adder . The car with me weighed 2720 it made 660 hp it ran 1.25 to 1.30 short times 9.28 in the 1/4 mile for six years never a problem . Launched it at 3500 to 4000 off the trans break . I took it out to inspect it it was like I just put it together. It was tied in to a 8.5 GM diff with a 33 Moser spline spool and axels .

This is exactly what I needed, Jake is the man!

Doing this right now hope it works

This is exactly what I want. Glad you keep innovating for us to benefit from! Thanks Jake!

Yeet

I'm going to get this ordered before Rocky Mountain Race Week

Thanks for the video , so what would you recommend a 350 turbo or a 400 for a 383 full roller stroker motor ??

A video of a stage 3 being assembled please What comes in in an how you guys put it all together

I put a new band in my trans and it seems that it's applying all of the way at the top where you're supposed to start measuring. Is that a common thing that can happen? If I put it together as-is the output shaft doesn't spin, which I know isn't going to be a good thing.

Thanks so much. Those measurements help tremendously

My converter sits flush against the flexplate when gearbox is on. I need to machine the pads or flexplate or a spacer between the block and gearbox to get the proper clearance?

Excellent video with extremely useful info. I appreciated the explanation of the needed measurements to validate you have the approximately 1/8" space needed behind the converter. Also, validating the piloting of the converter and alignment to the flex mounting holes is a very good tip.

Nice video, thanks for the information

I ordered sonnax rebuild kit for my 4l80e where do i find the instrustions?

Just read this check in the instructions but glad you also upliaded this for visuals, thanks!

where is Jakes Performance?

Thank you soo much man, i really needed this help!!

another briliant informative video by jake, that i have not seen anyone else cover thanks for the valuable knowledge jake.

thats awsome work jake

I am doing a non-lock converter in my build. I've installed the Sonnax valve after drilling the hole in the pump. I didn't realize the Sonnax valve done the same thing. Do I need to plug the hole in the pump and use the Sonnax valve or leave the hole in the pump and go back to the stock regulator valve? Or can I leave the Sonnax and the hole in together???