High Horse Performance, Inc.High Horse Performance, Inc.

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PSI Valve Springs & Manley Titanium Retainer Set for 03-08 5.7L & 06-10 6.1L Gen III HEMI - HHPSPRINGKIT1
Check out the installation guide here: [LINK NOT ALLOWED]   In order to run the higher lift cams on the non-variable cam 5.7L and 6.1L HEMI's, you will need to upgrade your stock valve springs. Through our testing which has involved the breaking of many other valve spring combination&#... See More
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