High Horse Performance, Inc.Answer
Jan 30, 2023 - 08:10 AM
PSI lists the 1511 spring to be capable of supporting up to a 625 lift:
https://www.psisprings.com/products/1...
https://www.psisprings.com/products/1...
what is the highest lift can run with these? PSI LS 1511 ML Valve Springs for 03-08 5.7L & 06-10 6.1L HEMI
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Open Jan 27, 2023 - 07:52 PM
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PSI LS 1511 ML Valve Springs for 03-08 5.7L & 06-10 6.1L HEMI
In order to run the higher lift cams on the 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's that are currently on the market, we have come to find that this special PSI sprin...
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