billw, i'm curious, why did you use the 4.3tbi on the 3.4?
also, i'm assuming you installed a 3400, and if so, lemme steer you to a site that will be of much help: v6z24.com. i used to own a cavalier, and the 3x00 swap is very popular in those cars. they can give you a lot of help on the motor
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