I have several w114/115 auto trans , is there some positive way (numbers?) to identify which ones are for diesel cars and which ones are for petrol cars, or is it just the torque converter that is different.

I am going to get rid of them so I wanted to list them correctly.

Thanks for your help.

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'72 240D
'76 300D
'88 300sel
'40 Chev pickup , the shop hack.
'73 Monte Carlo Landau, for "Super Chevy Sunday"

The trannies have a device kindof like a governor which decides at what rpm it shifts up to the next gear. If it is from a diesel engine it will be set up to shift at (maybe) 4,250 rpm. If it is from a gasser it will be set up to shift at (maybe) 6,150 rpm.

They will interchange (generally) and you will be fine if you put a diesel tranny in a gasser. It will just shift lower than you really want.

Now if you put a gasser tranny into a diesel engined car it will want to overrev the motor on a full throttle shift.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Thanks Tom , so I have to learn how to identify the govenor bit, or is it just an internal setting and I will be guessing which one is which type.

__________________
'72 240D
'76 300D
'88 300sel
'40 Chev pickup , the shop hack.
'73 Monte Carlo Landau, for "Super Chevy Sunday"