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Old 08-25-2003, 05:50 PM

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want to change from 200 to 700 trans.

Help? I am wanting to change my 1982 Jimmy 2 wd from the original trans with a lock up converter to a 700 from an 89 Astro van 2wd. I know the trans will bolt to the 305 and the drive shafts will fit cause both are the same length. now my ? what about the wires going from the 82 Jimmy (engine) for the lock up tork, are they the same that would hook to the 700 and make the tork converter work like it should. I can change the plugin , if that is my only problem. I'd like to keep the Jimmy close to orig. as I can, But like the 700's in my 91 and 89 s-10 Blazers THANKS

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Old 08-25-2003, 06:26 PM
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I didn't understand your question 82 s15 jimmy? 2.8 motor if so tranny from 305 89 astro van? thats a new one how about 4.3 astro van even that one wont fit your 2.8 s-15 jimmy lets see the question was about lock up wires 82 lock up was wired different from 87 up tranny and there are several different wire patterns to match ecm function
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Old 08-26-2003, 07:25 PM
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lock emup

Thats right there are several (several) variations on the wiring. Take the code off of your 200 and look in a chiltons or motors and see what and how we get lockup. Then take the code off of the 700 and see what it was designed to look for. Basically, the "A" is the hot wire and the "D" is the ground wire. It usually always has juice and is looking to be grounded, to get lockup. The "C" and 'D" wires are vehicle specific. Like if the AC is turned on, it might delay lockup so the engine won't lug. All of it can be fudged if you pay attention
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