deathvenom
Registered User
i have a 90 sc auto. stock but all new parts minus the block. i got it running and then i lost a ring #2 piston. now hears my idea: buy low mileage 4.2L from lkq $275 "u-pull it" put my new heads, intake, brackets, m90, and sensors "stock ecc and efi". i know there will be harmonic balancer issues. and i have a hypertech chip. what am i missing? will the heads and intake fit? i plan on keeping the 4.2 block internals all stock and keeping the 4.2 fly wheel. will it mount to my trans?