Empire Performance Engineering is proud to announce the release of the Duramax Stage 1 Beehive Valve Spring Kit 110-130 Psi seat. These valve springs out preform all the competition for Stage 1 Drop in replacement Valve Spring Kit. There is no extra cylinder head machining required to run these springs. Great for Stock to Mild Boost up to 70Psi.
- 110 - 130 PSI Seat
- No Extra Cylinder Head Machining Required
- Up To 70 PSI Boost
***Uses Stock Retainers, Locks, Keepers***
Note: These valve springs are made for mild lift cam profiles which is similar to the EPE Stage 1 Alternate Firing Order Camshaft. The use of these springs can be used on a higher/aggressive lift camshaft but it is highly recommended to have a professional machine shop properly adjust installed height to accommodate upgraded camshaft.
Important: There are some stock LB7 retainers that are not compatible with our valve springs. Please inspect and call before ordering.