Part Type:PAC Roller Valve Springs Style:1200 Series Type:Triple Damper Included:No Outer Spring Out Side Diameter (O.D.):1.645" Outer Spring In Side Diameter (I.D.):1.195" Inner Spring Out Side Diameter (O.D.):NA Inner Spring In Side Diameter (I.D.):.635" Seat Pressure:290 @ 2.070" Open Pressure:835 @ 1.270" Valve Spring Rate:682 Maximum Suggested Lift:.800" Coil Bind:1.130" Electro Polished:No Nitrided:No Suggested Steel Retainers:NA Suggested Titanium Retainers:3503 Suggested Seat Cups:NA Suggested Locators:NA Manufacturer:PAC Racing Springs Manufacturer's Part Number:PAC-1247 Packaged Weight:3.0 lbs.
