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    1990-92 Z28 / Iroc-Z engine tranny swap into 90 Sierra 1500 XTC

    i have been searching on this and most info i have found is just on swapping the intakes. i will give you some info. i have a 90 gmc sierra xtc 1500 with a 4.3 v6 tbi in it. it is on the 5th tranny and the motor is getting tired 275xxx miles on og engine and the og tranny gave out at 235xxx. now...
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