4t60 to 4f65
I am wondering about the possibility of converting my THM440-t4 aka
4t60 to a 4t65. What was the 4t65 used in? Ive read that it was
used in the 90ish supercharged Bonnieville anything else? Im
thinking the only difference between the two is maybe a double drive
chain instead of the 4t60 single drive unit. Is this mainly the only
thing? Does the 4t65 have a more bulbous side cover to accomdate the
larger chain drive?