GM's TH700-R4 four-speed automatic-overdrive transmission and its derivatives have nearly become the universal favorite of hot rodders. Properly built, a good 700 is capable of withstanding at least 450 lb-ft of torque. But that hasn't always been the case. With the help of the experts at B&M and TCI, we traced the 700's initially checkered past and bring you up to date on some of the countless improvements incorporated over the years as GM continually refined the basic design to keep up with the increasing output of the engines it was installed behind.
Read more: http://www.hotrod.com/techarticles/113_0704_700_r4_transmission/viewall.html#ixzz2fvtnTDUl
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