texasTA

I am in the process of finishing up my solid roller LT4 383 that I am going to spray a 300-350 NX shot on. My engine builder believes the car should be making about 500rwhp and then 800-850rwhp with the nitrous spray at the track.

SO I am kinda stuck as far as my tranny choices. Currently my car has a 4L60-E that was rebuilt and is suppose to hold 450rwhp. I already have a ProYank 3600 stall to go with a 4L60-E rebuild. I got a place here in Texas (RockOn) who has been building some stout 4L60-Es for the LS1 guys that seem to be holding some power.

They are GUARANTEEing me that they can build one to hold that type of power, but I was just wanting to see if you guys have heard of a 4L60-E tranny holding that kinda power. If not, then I guess I am going 6-speed.

94Zpower

I am not sure if it will handle that much power but the best possible person to ask would be Frank at CPT, check the link in my sig for his website and contact info.

myslowcamaro

ditto on cpt. already asked him that question and he said it should handle it. thats talking new planetaries, going to 4l65e, and a cooler if you dont already have one. about $1500. call him anyway, but i just spent a hour on the phone with him couple days ago and asked a barrage of questions like that.