Quote:
Originally Posted by Vince M
The 4L80E is a great tranny but it is electronically shifted and will need a controller to shift it. Aftermarket units are expensive. The 700r4 is your best bet for a four speed auto. Saves you gas, saves your motor, quiets down the ride at freeway speeds. No controller is needed as it shifts just like a three speed auto (TH350, TH400). If you go the 700r4 route invest in a lockup torque converter and a kit to engage it.
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the kit to engage the overdrive? I'm looking into this swap as well. I tow a good bit and don't want to go the wrong route the 1st time. Does the kit work like a tow/haul controller like the late model trucks??