NON VVT Gen 3 Hemi Valve Spring Kit 5.7 / 6.1

PSI or PAC Valve Springs are used in our FRP aftermarket Hemi Non VVT cam kits in conjunction with Cam Motion valve spring locators, valve stem seals and shims for early 5.7 and 6.1 applications, depending on availability. (Not every application requires aftermarket retainers and retainers are sold separately)

.660" Valve Spring Kit for Early Gen 3 Hemi 5.7 & 6.1 engines. When using this kit, you will re-use your existing OEM stock valve spring retainers and valve locks. 

This kit includes:

• 1 set of 16 Premium .660" Single Beehive Valve Springs (1.290 OD 150 lbs @ 1.800" / 420 lbs @ 1.140)
• 1 set of 8 1.250 OD;.875 ID;.060 Thickness Intake Valve Spring Shims
• 1 set of 8 1.250 OD;.875 ID;.030 Thickness Intake Valve Springs Shims
• 1 set of 16 Valve Spring Locator/Seats
• 1 set of 16 Valve Stem Seals

SPRING SPECS:

150 lbs @ 1.800"

420 lbs @ 1.140"

Coil Bind @ 1.080”

*NOTE: This kit uses a .090” shims under the intake valve spring to achieve proper valve spring installed height. No shim is needed under the exhaust valve springs.

**NOTE: On early 5.7 and 6.1 Gen 3 Hemi cylinder heads, do not exceed .600” intake valve lift and/or .580” exhaust valve lift unless you machine the valve guides for the needed additional clearance.

If you are looking for our cams, or complete cam/cam kit packages, check out our VVT offerings here . Our Non-VVT offerings can be found here.