Just wanted to see if anyone was running one. My motor should be around 600fwhp and then the nitrous 100-175. It says it hold 750fwhp. Ive only delt with Finishline transmisson on another 4l60e and it came out great but was way more than Probuilts street elite but came with billet shafts and some other stuff. Opionions would be great thanks.

I'm not sure what level of ProBuilt (Elite or whatever) transmission I have, but it's warranted for 500ft/lbs tq. They never mentioned the hp.

I had it built about 14yrs ago. It lasted 98K miles until the planetary exploded. I had it fully rebuilt again and upgraded to the newer planetary (5 gear or something?). I have about 40K miles on that rebuild now.

It's a ProBuilt 4L60 plus the following:

ACT 2400 RPM Stall Converter w/Lock-Up (Dana custom ordered it)
Corvette Servo and Housing
3-4th Gear Up-Shift Valve Mod (Ability for WOT in 4th)
GM HD Sunshell
Hi-Energy Borg-Warner Clutches and Bands
TransGo Recalibration Kit
Chevrolet S10 Pickup Shift Governor
Tru-Cool Transmission Oil Cooler, 18,000 GVW
Heavy Duty Flexplate (I shattered 2 street racing before going HD)

I'm not running near the power you are but planned on it, hence over building the tranny. Hopefully someone can chime in who is putting that much power thru one day to day.

Thanks for the response. About how much hp are you putting through it?