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s10 1989 4.3 tbi vortec heads new

  1. S10 / S15
    Hi everyone new to the s10 scene love the truck but have a problem . I have an 89 s10 4.3 tbi vin z lb4 engine it has a stripped spark plug hole on cylinder 5 seems it was attempted to be threaded again so wanting to replace the heads. I have a pair of late 90s vortec heads but don't know what...