| CNC-Machined Combustion Chamber, Guideplates Included, Machined for O-Ring, Rocker Arm Studs Included, Steam Holes Drilled | No |
| Color, Finish | Natural |
| Combustion Chamber Style | Kidney |
| Combustion Chamber Volume | 68cc |
| Cylinder Head Style | Assembled |
| Exhaust Port Shape, Intake Port Shape | Rectangle |
| Exhaust Runner Volume | 92cc |
| Exhaust Valve Angle | 15 ? |
| Exhaust Valve Diameter | 1.59" |
| GTIN Code | 850134007914 |
| Intake Runner Volume | 276cc |
| Intake Runner Volume Range | 270cc - 279cc |
| Intake Valves Included, Locks Included, Retainers Included, Valve Guides Included | Yes |
| Material Type | Aluminum |
| MFG. Part # | LS3-505 |
| Number of Springs Per Valve | Dual |
| Oiling Style | Through Pushrod |
| Spring Diameter | 1.29" |
| Valve Cover Mounting Style | Center Bolt |
| Valve Seat Material | Powdered Metal |
| Valve Stem Seal Type | Positive Stop |