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Auto-to-stick conversion: ECU compatibility and rear axle ratios 200 1992

posted by  someone claiming to be Dharvey on  Wed Dec 31 08:33 CST 2003 [RELATED]

Dear Brickmeisters:

I've found a donor car. But the dealer who has it raised an interesting question.

He says that ECUs for stick 240s are different from those with auto trans, because the ignition advance curves are different. Does anyone know about this? I've never seen this mentioned on the board, but maybe there's something to it.

Also: auto 240s (at least my 1992) have a 3.73/1 rear axle ratio. Does anyone know what the ratio is for stick 240s? I recently had to replace my rear axle and would hate to do it again if the difference isn't enough to mess up the operation. Also the replacement is a real low mileage unit and the axle on this donor car may not be as solid.

Thanks for any help you can provide.

Doug Harvey






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