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86 d21 transmission in a 720?

A guy named Rick

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i-pull-u-pull is having a deal with transmissions and there's a D21 I hope still has a transmission in it. It's an 86, 2wd, regular cab, and my 720 is a 2wd regular as well. Both z24 engines (with the exception of the d21 being throttle body injection which doesn't matter). I can get one for $90 and take my time rebuilding it so the only down time for my truck will be just swapping it over. Are the two the same? I know there's the 31" and 26.5". If both are regular cabs in theory they should be 26.5", idk if the mount holes are the same though.

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That assumes they are the same length between engine mounts and differential. Both are a two part drive shaft. With luck, the D21 front is the one that matches the transmission length and it may fit your rear shaft. The D21 is a different generation, it's wider and heavier.

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