doable?

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RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

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FACEBOOK: PANZER450

I think it's essentially the same 722.1xx box. The valve body will be different to match the diesel performance, but it should work OK.

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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)

Diesel is a 4 speed auto and the v8 transmission is a 3 speed. It may not hold up and it may not have the same bolt pattern. if it does work, then there will be a lot of people looking for 4 speeds for their 6.9's or 450SL's.

__________________
With best regards

Al

Ah yes, Al is correct. The 280SE is a 4-speed box, though. I may be wrong on this , but I think all the gearing is present even on the three-speeds. If you plug in the diesel brain you might get 4-speeds.

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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)

Brain? or do mean valve body? as far as I can remember, the only electronics involved with a 722 from and SE/SD is the kickdown and neutral safety, and the OLP system on the diesels. feel free to correct me. If there's some way of getting 4 speeds out of that transmission while keeping the range ratios, then I''m all over that!

__________________
RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

____________________________
FACEBOOK: PANZER450

Yeah, brain=valve body. You had best talk to someone who knows these transmissions better than I do. Maybe the guys at jie.com, fer instance.

I have had the 280SE gearbox apart (as well as the 300SD). I have to think they have all the same number of gears , including the v-8s (maybe the ratios are different), but the signals sent by the brain as to which hydraulic circuits to energize would be different.

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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)

a W116 280SE and a W116 300sd both have 4 speed automatics. The V8, W116's had 3 speeds.

__________________
With best regards

Al