Who determined it was overkill?
The guy with the attitude?
"like trying to move a freight train with a B&S engine" Is an opinion.
"friction of this thing would eat up a lot of what an old inline puts out" Is an opinion.
"this would be better posed as Bill O'Reilly's Most Rediculous Item of the Day." Is a slam.
Uninformed and uncalled for.

Your '52 3600 is a 3/4 ton, my, '67 is a 3/4 ton and Chevy has been using the ZF 650 in their 3/4 ton 2500 since 2000. They use it in the 2500, 3500, 4500 and the 5500.
Chevy used the SM465 in 3/4 ton, 1 ton, 1.5 ton and 2 ton trucks for years. Does that mean I have a freight train SM465 trans in my 3/4 ton.

It would take two of any other transmission to get the gear spacing and number of gears of the one ZF 650. Here is an idea. Put a Gear Venders overdrive unit(they call it a gear splitter) on the back of a SM465. It would be longer than a ZF650. Heavier than a ZF650. Harder to install than a ZF650 and cost a hell of a lot more than a ZF650.

I may be thick headed, but I'm not so thick skinned that I don't know when bull [censored]'s walkin'.


'67 GMC 3/4 292 4spd