Quote:
Originally Posted by Dan Fahey
How does the TH200 R4 differ from the 4L60E?
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Basically a 200-4R is a 200THM with an overdrive gearset added in front of the 3spd guts . The 4L60-E is based on a 700-R4 which makes the 4 speeds using only 2 planetary gearsets , then adding an electronically controlled valvebody . The most common 4L60-E , has a Chevy bell , but there also is a smaller bell available to hook up to a 3800 V6 .
The 200-4R had two bellhousings available , a composite BOP/Chevy bell and a BOP only bell . All 200-4R's were old school with a governor controlled hydraulic VB .