Multiple application compatibility for Gen 3 and Gen 4 Hemi engines enables broad usability
Choice of titanium or lightweight steel retainers reduces overall engine weight
Includes or requires only necessary hardware for each application, simplifying installation
Supports both VVT and non-VVT applications for flexible tuning options
Summarized by Shop
Due to supplier demand, sales for individual spring kits (not in a cam kit) has been paused. Please try again After June 1st. Gen 3 Hemi Valve Springs, hardware and accessories 5.7 VVT Applications:PAC 1275X requires .060 shimsPSI 1515ML requires .060 shims 6.4/6.2 Applications: PAC 1232X no hardware requiredPAC 1276X req
Application Range
Gen 3 (5.7 VVT), Gen 4 (6.4, 6.2 VVT, non-VVT 03-08)
I have the pac 1275x and so far so good. Have 25k km on them with the scud plus vvt cam. No issues. They should come with some instructions though some people dont realize the .060 shims go below the factory shims
T
Tyson · February 5, 2025
Valve Spring kit
My entire cam kit from FRP is amazing! Top quality and performance. FRP is my GoTo for performance needs