The Proform Pneumatic Valve Spring Compressor reduces cylinder head disassembly/assembly time by more than half. The compressor arm slides and locks with a pin for fast, easy adjustment on most cylinder heads. The pneumatic cylinder is capable of producing 350 pounds of force at 125 psi but needs only 100 psi minimum to operate.

The Proform standard duty valve spring compressor removes and installs valve springs with the heads on or off the engine. It handles 1''-2'' diameter springs and fits 3/8'' and 7/16'' studs. The most affordable valve spring compressor yet is the stud-style compressor which will easily compress almost any spring. It works with Chevy Small Block, Big Block, Ford, and Pontiac engines.

• Quick tip: For head on engine applications instead of stuffing rope through the spark plug hole to prevent your valve from falling, use the Proform's Air Hold Adapter Set with an air compressor to do the job properly.