COMP Cams Magnetic Deck Checker Fresh Air System Blower Wiring Harness 8mm Double Silicone Construction Black

8mm Double Silicone Construction Black Wire Rated To 600 degrees F

1979-1993 GMC C1500

Diamond shape road race baffle with four Trap Door Baffles

1998-1998 Ford E-350 Econoline

Unique Dual Range Dial Scale Is Engineered Specifically For Fast Revving

COMP Cams Magnetic Deck Checker Fresh Air System Blower Wiring Harness 8mm Double Silicone Construction BlackTo calculate true compression ratio it's necessary to measure the distance between the deck surface of the block and the piston deck. Our machine aluminum deck checker incorporates magnets to hold itself firmly to the block for simple and accurate measurements. Mount a dial indicator in the center for deck height or in each end to check piston rock. Our magnetic deck checker allows for the easy mounting of a dial indicator to check piston travel.