The PAC Racing PAC-1232X-16 is a beehive-style valve spring built as a direct drop-in upgrade for 6.4L Hemi engines, whether the heads are the factory 5.7L Eagle castings or the 6.2/6.4L Apache heads used on later HEMI applications. Because it installs without machining or a retainer swap, it is a common first step when adding a cam with more lift than the factory spring was designed to control, without taking on the complexity of a full spring, retainer, and seat kit.

PAC Racing Springs PAC-1232X-16 RPM Series Beehive Valve Spring Set Features:

• Direct drop-in fit for 6.4L Hemi engines with 5.7L Eagle or 6.2/6.4L Apache cylinder heads
• Beehive taper reduces reciprocating mass at the top of the spring for improved high-RPM control
• 1.345 in. outside diameter with a 423 lb/in. spring rate, rated to 0.650 in. of valve lift
• 1.346 in. maximum coil bind height
• Built from PACaloy super clean wire, heat-treated in-house, and finished with PAC's multi-peen and Nano-Peen processes for extended service life