metric 200 chevy bolt pattern

[Dan Fahey]

Originally Posted by ss3011

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 .

Thank you..
My car uses the 4L60E and can make changes via TunerCat.
Really like the 3.08 first gear to get my heavy car launched.

What kinds of modifications are done to these transmissions to reduce drag yet keep reliability?

D