B&M Shift Improver Kit - GM TH350 Transmissions MERCHANT AUTOMOTIVE A sleek recovery solution that

A sleek recovery solution that looks like stock

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B&M Shift Improver Kit - GM TH350 Transmissions MERCHANT AUTOMOTIVE A sleek recovery solution thatThe B&M Shift Improver kits feature two options to recalibrating your 1968 1981 GM TH350 automatic transmissions. First is the HEAVY DUTY set up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET STRIP set up. Be warned, this will deliver firm positive shifts you will feel, along with easily chirping