- Accessory Bolt Holes Drilled
| Yes |
- CNC-Machined Combustion Chamber
| Yes |
- CNC-Machined Exhaust Runner
| No |
- CNC-Machined Intake Runner
| No |
- Combustion Chamber Style
| Heart |
- Combustion Chamber Volume (cc)
| 61 |
- Cylinder Head Finish
| Natural |
- Cylinder Head Material
| Aluminum |
- Cylinder Head Style
| Assembled |
- Damper Spring Included
| Yes |
- Exhaust Port Location
| Standard |
- Exhaust Port Shape
| Square |
- Exhaust Runner Volume (cc)
| 66cc |
- Exhaust Valve Angle
| 17 |
- Exhaust Valve Diameter (in)
| 1.600 in. |
- Exhaust Valves Included
| Yes |
- Guideplate Pushrod Size
| 5/16 in. |
- Guideplates Included
| Yes |
- Heat Crossover
| No |
- Intake Port Location
| Standard |
- Intake Runner Volume (cc)
| 170cc |
- Intake Valve Angle
| 15 |
- Intake Valve Diameter (in)
| 2.020 in. |
- Intake Valves Included
| Yes |
- Lock Style
| 10 degree |
- Locks Included
| Yes |
- Machined for O-Ring
| No |
- Maximum Valve Lift (in)
| 0.600 in. |
- Notes
| Trick Flow twisted wedge pistons are required for use with these heads to allow for piston to valve clearance with camshafts over .550 in. lift. Heads are drilled to accept 1/2 in. head bolts. Valve cover rail is raised .350 in. over stock. |
- Number of Springs Per Valve
| Dual |
- Oiling Style
| Through pushrod |
- Outside Diameter of Outer Spring (in)
| 1.460 in. |
- Quantity
| Quantity of 2 |
- Retainer Material
| Chromoly steel |
- Retainers Included
| Yes |
- Rocker Arm Nut Thread Size
| 7/16-20 in. |
- Rocker Arm Nuts Included
| No |
- Rocker Arm Studs Included
| Yes |
- Rocker Arms Included
| No |
- Steam Holes Drilled
| No |
- Valve Guide Material
| Manganese bronze |
- Valve Guides Included
| Yes |
- Valve Seat Machine Style
| 3-angle |
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