[er455]

Anyone using a 4L80E transmission with boost ?

[RAIV-Z]

Rossler Turbo 400 "TH210-XHD" here.

[Chief of the 60's]

A 4L80 is basically a TH400 with an overdrive. Tons of people running them N/A, Boost, Nitrous, etc. Talk to one of the one of the better known O.D. builders like Art Carr or Performabuilt.

[n2ogpsj462]

Are you just asking if they work with boost? Thousands use them as its a good choice for OD in a street car. I went 700r4 only because it was 18yrs ago annd the 4l80 wasn't a viable option then but will be using one next. Actually already built under my bench waiting for me to finish the motor

[Half-Inch Stud]

3-4 Upshift is firm and low-latency. I don't have Boost, just porting.

[er455]

Well I have a 400 now that is we’ll built , but I want to keep it a automatic shift under boost I currently have a check valve on on modulator and it’s working ok on the street but with a 4l80e the shifts are programmable and do not require a vacuum modulator but requires a lot of mods like adaptor plate, shorter driveshaft , speedo adaptor , trans computer , new convertor , etc ,

[ERIC AULL]

Originally Posted by er455

Anyone using a 4L80E transmission with boost ?

Yes, I have a 4L80e behind my blower motor in my GTO...love it....cost is high but it is a great trans. and works well. What exactly do you want to know? My trans. was built by CK Performance on Long Island. 1967 GTO....ericaull@yahoo.com

[er455]

Are you letting the controller shift your car automated? I like the fact you can basically tune the trans like shift hardness , shift points ,