These 370cc LS3 heads are CNC ported with our Competition Valve Job on EPOC CNC valve seat machine. You can’t get a better valve job.
.0002 runout (Yes that’s 2 ten thousandths)
Manley Racemaster Stainless Valves made in USA
2.165 intake x 1.600 exhaust
Intake flows 362cfm @ .700 lift and 370cfm @ .800 lift.
Exhaust flows 225cfm @ .700 lift and 228cfm @ .800 lift
Flowed on SuperFlow 1020
Flow on Super Flow 600 will be 20cfm higher
68cc CNC chambers
Lunati 73925 Signature Dual hyd Roller Spring Kit
1.306 OD, [email protected]
, [email protected]
, 379lb rate
Chrome moly steel retainers, 7deg locks
Viton valve seals
Assembled by USA Performance Parts
Speedmaster Aluminum Castings
Manley Severe Duty & Inconel Valves available.
Hollow Stem Intake Valves also available
We are Manley & Lunati Master Warehouse Distributors