Quote:

There was some claim that there was a TSB that instructed replacing damaged 3.91:1 8-3/4"s in 4-speed b-bodies (383 in Road Runner, Super Bee, Charger) w/4.10:1 DANA 60s. I don't know if the paperwork ever surfaced. Off to Hamtramck-Historical to look & see.



I have seen it posted , I think Doug H. has it .

To answer another question , everything with an automatic and 3.23 gears was built standard with an open rear , didn't matter what engine it was behind.