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Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by bigreid, Apr 2, 2002.
Can you put a 4L80E or a TH400 transmission on a 1989 1/2 ton suburban?
Yep...the TH400 would be easy to adapt, while the 4L80-E would require a stand-alone ECU, as the 4L80-E is electric...The bellhousing bolt pattern is the same on both...I'm not to sure on t-cases and adapters though...
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