Capable of adjusting settings on computer-controlled Rochester, DualJet, QuadraJet, and VaraJet carburetors, this tool set provides the specific drivers required for carbureted GM engines. It includes a 2 mm double-D for lean authority and mixture control, a 2.5 mm hex for TPS adjustments, and a 7 mm double-D for main metering jets. This 3-ounce (85 g) kit also contains a 10 mm double-D to calibrate the mixture control solenoid rich screw.

Capable of adjusting settings on computer-controlled Rochester, DualJet, QuadraJet, and VaraJet carburetors, this tool set provides the specific drivers required for carbureted GM engines. It includes a 2 mm double-D for lean authority and mixture control, a 2.5 mm hex for TPS adjustments, and a 7 mm double-D for main metering jets. This 3-ounce (85 g) kit also contains a 10 mm double-D to calibrate the mixture control solenoid rich screw.