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Old 10-26-2011, 03:55 PM
bosshog383 bosshog383 is offline
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Join Date: Aug 2008
Location: Dover,AR
Posts: 28
Question Is 420SEL tranny the same internally as 300SD tranny?

The transmission in my 89 420SEL diesel swap is getting tired. I've got about 380K on the tranny,which was in my 84 SD. The original tranny that was in the 420 has only about 130K on it. I'm thinking I can maybe swap out trannys if the need arises, keeping the diesel torque converter of course. Are there any differences between gas and diesel trannys? Valve body?
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84 300SD was driver,now donor for 89
89 420SEL diesel swap
84 300TD parts car,soon to scrap

Last edited by bosshog383; 10-26-2011 at 06:43 PM.
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