Transmission options- supercharger

[MDimitri]

Have a look at this site and it will provide you with further information on the 4L65E(450HP), 4L80E(1000HP) and 4L85E(1200HP) (maximum high perf or race settings).

http://www.e700r4.com/

Quote from site "#LS1-700. Crankshaft spacer to install an early type 4L60E transmission or 4L80E on a LS1 type motor. Six longer flywheel bolts included. The LS1 flywheel is reused. The flywheel goes on first then the spacer. The torque converter bolt holes in your flywheel must be elongated to fit your non-LS1 torque converter bolt circle. Cost $85.00

#10C. Crossmember for the 4L60E to 4L80E transmission conversion, 2000 up Tahoe and some others. This custom made crossmember moves the transmission mount to the correct position for the 4WD Tahoe 4L60E to 4L80E conversion. Works with the #3XX deep cast aluminum pan that holds 3 3/4 extra quarts of fluid. Cost $310.00. On some trucks the crossmember will slide to the rear. This price includes a $140.00 core charge, return your old crossmember in good undamaged condition for a refund.

#10C2. Crossmember for the 4L60E to 4L80E transmission conversion, 2000 up Tahoe and some others. This custom made crossmember moves the transmission mount to the correct position for the 4WD Tahoe 4L60E to 4L80E conversion. Must be used with a late model type pan. Cost $285.00. On some trucks the crossmember will slide to the rear. This price includes a $140.00 core charge, return your old crossmember in good undamaged condition for a refund.

#10T. You get the 4L80E to Tahoe 4L60E transfer case adapter, custom made 4L80E to 4L60E transfer case output shaft, 4L60E to 4L80E wiring adapters, LS1 motor to 4L80E crankshaft spacer and a #10C custom built 4L80E crossmember that moves the transmission mount to the correct position. You saw it here first. Even the best built 4L60E transmission in a heavy 4WD supercharged Tahoe wont last long, a built 4L80E transmission is twice as strong as a built 4L60E transmission. Cost $1074.00 Nicely priced also with all things considered!!

[mboard]

Dimitri,
Thanks for your assistance. I took the information to my dealer and he likes the idea. However his only concern is programming the computer with the 4L80E installed with Whipple. The company you referred to in posting did not have information on programming this set up. I will let you know what the tech says when he has more time to look into this. Any ideas?

[MDimitri]

Try going to this site: http://www.tunercat.com/tnr_desc/do_tc.html, see if they can recommend a ecm or eprom upgrade. Another avenue for your technician to have a look at is at http://www.hptuners.com/ or try doing a BIN search request at this site: http://www.horist.com/hptuner/ What your going to need is a Supercharged Vortec cal for a whipple with 4L80E tranny. A really good technical site you should have a look at is http://www.ls1tech.com/forums/ when you go here you will need to register in order to take advantage of ther forum. Good luck.

No I'm not a H2 Tech....but I did stay at a Holiday Inn Express last night!!

[obzidian]

the TCI trans controller is well designed at dealing with the 60e/65e/80e setups. You adjust EVERY parameter to make your setup perform right. TCC lock-up, line pressure, shift points, shift time delay, etc. it can get the job done and doesn't need to pigback the stock pcm, just runs the trans and that is it.

http://www.tciauto.com/electronics/index.htm

Ls1tech is a nice site, im usually there, i have a f-body and a cts-v, before trading her in for the H2.

Those trans will hold fine. I like this company, i have seen there trans hold up to a whole lot of abuse through the silverado i mentioned...

http://www.finishlinetrans.com/index.htm

this is there site, i would call and ask for chuck, really nice guy and should help you out with what you need. They can do the vacum mod if you wish, helps out with the feel of the trans...

good luck!!