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Can you swap a thm 400 transmission into a 1986 Chevy suburban with a 700r4?
Wiki User
∙ 14y ago
Yes you can. The overall length of the transmission may be slightly different so you will need to check drive shaft lengths and re-drill the cross member holes. Is it a 4x4? That will cause you to make sure the spline length is the same. You will also have to add the electronic controls for the transmission since the 400 used a vacuum modulator and the 700 uses electronics. You will end up with a lower first gear than the 400 and overdrive with lockup converter so it is a pretty nice addition if you do it right. Good luck.
Wiki User
∙ 14y ago
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