GM's LS engines are the hottest thing to hit the scene since Chevy debuted the first smallblock back in 1955. These fully CNC ported 215cc heads are specifically designed for 5.7L LS1 engines. They are available with hydraulic roller or mechancal roller valve-train setups, and 6 bolt casting options for LSX blocks. Should you need a custom assembly not included here, give us a call!
| FLOW DATA 3.900" BORE | ||||||||||||||||||||||||
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| * Tests conducted at 28" of water, 3.900" bore, 1.875" exh. pipe |
STANDARD FEATURES
- Material: -- A356-T6 Aluminum
- Combustion Chamber Volume: -- 64cc CNC-profiled Standard
- Intake Port Volume: -- 215cc CNC Ported
- Intake Port Location: -- OEM
- Intake Valve Diameter: -- 2.040
- Intake Valve Seat: -- Interlocking Ductile iron
- Exhaust Port Volume: -- 80cc CNC Ported
- Exhaust Port Location: -- OEM
- Exhaust Port Dimensions: -- 1.460" x 1.6700"
- Exhaust Gaskets: -- Stock Gm
- Exhaust Valve Diameter: -- 1.575"
- Exhaust Valve Seat: -- Ductile iron
- Valve Guide Material: -- Bronze alloy
- Valve Seals: -- Viton® fluoroelastomer
- Minimum Bore Diameter: -- 3.900"
- Cylinder Head Bolts: -- OE Length
- Spark Plugs: -- NGK-TR6 or Equivalent
- Valve Covers: -- OE bolt pattern,raised 0.200"
