| Combustion Chamber Volume | 54cc |
| Fitment | Vehicle Specific |
| Cylinder Head Type | Standard |
| Deck Thickness | 5/8in |
| Emission | 50 State Legal |
| Engine Make/Size | AMC 290-401 |
| Exhaust Port Locaiton | Stock |
| Exhaust Valve Diameter | 1.60in |
| Exhaust Volume | 70cc |
| Finish | Cast Aluminum |
| Guideplate | Hardened Steel |
| Intake Valve Diameter | 2.02in |
| Intake Volume | 185cc |
| Preparation | Bolt On (Not Required) |
| Pushrod Diameter | 5/16in |
| Rocker Stud | 3/8in |
| Spark Plug Fitment | 14mm x 3/4 reach, gasket seat |
| Type | Complete |
| Usage | Street/Performance |
| Valve Angle | 18deg |
| Valve Guides | Manganese Bronze |
| Valve Spring Diameter | 1.55in |
| Valve Spring Max Lift | .580in |
| Valve Stem Diameter | 11/32in |