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A mate built one with an LS1 engine and powerglide (shorty) put it in backwards over the Ford 9" diff centre (IRS converted) and ran it into a boat VEE drive with 2 very short jackshafts. Worked a treat and to my knowledge it never failed. This was for racing purposes. It was no longer than his normal chaisis (he had a few, raced for over 20 years).He didnt use a std style torque converter, this was years ago so my memory is a little vague (??) but I think it had a lock up fluid drive (as opposed to a torque converter). He also talked about the heat reduction and his torque levels were more than adequate without the converter. It was manual shift to, no auto.
You're talking apples and oranges there my man. What he did was like the circle track guys do.Eliminate the TC and you eliminate most of the heat issue.You also lose all the tq multiplication and have to run direct drive. You're either in gear or not. In a circle burner or boat that works fine but it will suck balls on the dirt/pavement/sand. THe low gear in a standard PG is no lower than 1.82:1 You CAN go aftermarket and get a bit lower but not much.