PAC 1218 Valve Spring Set

Set of 12 PAC 1218 springs.  This USA made beehive spring is a drop in replacement for 3100, 3400, and 3500 engines, with a 1.700" Install height  Drop in with matching retainers for the Gen 2 2.8/3.1 Aluminium head engines, using the same stock 1.700" install height.  3.5/3.9 VVT engines also use these springs, with their stock 1.800" install height.

Specs

• 130# @ 1.800"
• 318# @ 1.200"
• Coil Bind @ 1.100
• 313 lb/in spring rate