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lt1s10 · 05-02-2005, 11:14 PM

In most of the 4L80E versions shifting is computer controlled. If he doesn't have a computer controlled engine that can also control the trans then it's probably more work then it's worth to swap in the 4L80E. They also sell stand alone ecu's for just the trans but they are pricy. The 4L80E is common in the heavy duty GM trucks and also in the motorhome and utility chasis kits that GM sells. There are non computer controlled versions of the 4L80E but they are not very common at least where I am.

How much money is he thinking about spending? If he's trying to do it on the cheap his best bang for the buck would be to build the 700R4 he has already since it seems he's having a hard time getting a hold of either a TH350 or TH400. During a rebuild the 700R4 can be made strong enough to handle the 454 unless he's already built the heck out of that 454 or he's running forced induction.

05-02-2005, 11:14 PM	#18 (permalink)
lt1s10 Crazy	In most of the 4L80E versions shifting is computer controlled. If he doesn't have a computer controlled engine that can also control the trans then it's probably more work then it's worth to swap in the 4L80E. They also sell stand alone ecu's for just the trans but they are pricy. The 4L80E is common in the heavy duty GM trucks and also in the motorhome and utility chasis kits that GM sells. There are non computer controlled versions of the 4L80E but they are not very common at least where I am. How much money is he thinking about spending? If he's trying to do it on the cheap his best bang for the buck would be to build the 700R4 he has already since it seems he's having a hard time getting a hold of either a TH350 or TH400. During a rebuild the 700R4 can be made strong enough to handle the 454 unless he's already built the heck out of that 454 or he's running forced induction. Last edited by lt1s10; 05-02-2005 at 11:24 PM..