Moroso Adjustable Vacuum Advance Kit - 1975-+81 GM HEI Distributors Transmission Yoke Fits: GM TH400

Fits: GM TH400

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you stage and launch the car normally

Required For Installation Of 30 Psi Fuel Pressure Gauges On 98-02 Dodge Cummins Diesel Applications In Order To Protect Sending Units From Excessive Pressure Spikes During Start Up

all while retaining the full

Moroso Adjustable Vacuum Advance Kit - 1975-+81 GM HEI Distributors Transmission Yoke Fits: GM TH400Allows you to change the amount of ignition vacuum advance for maximum part throttle performance while preventing the harmful effects of spark knock (detonation) Dial in as much spark advance as conditions permit add more advance under light load conditions to improve throttle response and fuel economy, or limit spark advance in high compression engines and high load conditions to eliminate knock Built in stop prevents the adjustment screw from