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 valve spring locators, 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. 

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 16 Intake Valve Spring Shims (6.1 Heads Only)
  
• 1 set of 16 Valve Spring Locator/Seats
  

SPRING SPECS:

150 lbs @ 1.800"

420 lbs @ 1.140"

Coil Bind @ 1.080”

**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.