Engine Pro 911-16 Valve Springs Dodge Plymouth Mopar 383 426 440 Chevy 454

Engine Pro Performance Spring Kit.  Designed for max lift .625" Torque performance Cams for Chrysler and Big Block Chevy.

Specs:

• 1.548" Outside Diameter
• 1.134" Inside Diameter
• 133# Seat @1.900"
• 325# Open @ 1.400"
• Coil Bind 1.170"
• Free Ht 2.040"