Introducing our Freedom Series Cummins Performance cylinder heads. Each cylinder head is manufactured in our state-of-the-art cylinder head machine shop and guaranteed to meet or exceed factory specifications. All heads are inspected, pressure checked, decked, painted, and ready for installation. Plus, the 11 screw in freeze plugs ensure you’ll never worry about a coolant leak under the valve cover again. Whether you are sled pulling, drag racing, or just looking for extra power when towing, our Performance heads will get you the power you need and include larger Manley valves and are rated up to 1,100hp!
Features
- Fire ring the cylinder head (All in the head)
- 11 screw in freeze plugs (eliminates coolant leaks)
- Hardened, oversized press in valve seats
- New valve guide liners
- Larger 1.380" stainless steel alloy intake valves
- Larger 1.380" inconel alloy exhaust valves
-
105 valve springs and steel retainers
- Fire ring gasket kit with multi-layer steel gasket and 4.550" diameter rings
Notes
** Core and crate return required - all paperwork & instructions for return included with the new cylinder head.
*** FOLLOW ALL INSTALLATION INSTRUCTIONS; Valve lash required. Back off adjusters on rocker arms or damage will occur to the cylinder head. Verify flatness of the block prior to installation. Installation of fire ring heads should only be performed by an experienced technician.
**** Will not work with other aftermarket head gaskets - use of Fleece Performance fire-ring head gasket kit is required.
***** When utilizing aftermarket head studs, lower rocker box cover modifications are required. Reference ARP INSTALLATION METHOD INSTRUCTIONS.
