Cylinder Head Specifications
CYLINDER HEAD SPECIFICATIONS| Cylinder Head | Gasket Thickness (Compressed) | 0.0276 inch | |
| Cylinder Head Warpage (Flatness) | 0.002 inch | ||
| Cylinder Head-Bolts | Step: 1 Tighten bolts 1-10 | 15 ft.lbs. | |
| Step: 2 Tighten bolts 1-10 | 35 ft.lbs. | ||
| Step: 2 Tighten bolts 11-14 | 18 ft.lbs. | ||
| Step: 3 Tighten bolts 1-10 | 90 ° | ||
| Step: 3 Tighten bolts 11-14 | 22 ft.lbs. | ||
| Camshaft | Bore Diameter | 1.0245- 1.0252 inch | |
| Bearing Journal Diameter | 1.0227 - 1.0235 inch | ||
| Bearing Clearance | 0.001 - 0.0026 inch | ||
| Bearing Clearance | 0.0026 inch | ||
| End Play | 0.003 - 0.0079 inch | ||
| End Play (MAX) | 0.0079 inch | ||
| Non-oil sprocket bolt | 90 ft.lbs. | ||
| Bearing cap bolts | 100 inch lbs. working in 1/2 turn increments, tighten the bearing cap retaining bolts starting with the middle cap working outward. | ||
| Valve Timing | Intake | Opens (ATDC) | 3.6° |
| Closes (ATDC) | 247.1° | ||
| Duration | 243.5° | ||
| Exhaust | Opens (BTDC) | 232.5° | |
| Closes (ATDC) | 21.2° | ||
| Duration | 253.70° | ||
| Valve Overlap | 17.6° | ||
| Valves | Face Angle | 45°- 45.5° | |
| Head Diameter | Intake | 1.9103 - 1.9205 inch | |
| Exhaust | 1.4516- 1.4618 inch | ||
| Length (Overall) | Intake | 4.4666 - 4.4965 | |
| Exhaust | 4.5244 - 4.5543 inch | ||
| Stem Diameter | Intake | 0.2729- 0.2739 inch | |
| Exhaust | 0.2717 - 0.2728 inch | ||
| Stem - to - Guide Clearance | Intake | 0.0008 - 0.0028 inch | |
| Exhaust | 0.0019- 0.0039 inch | ||
| Max. Allowable Stem - to - Guide Clearance (Rocking Method) | Intake | 0.0028 inch | |
| Exhaust | 0.0039 inch | ||
| Valve Lift Zero Lash | Intake | 0.443 inch | |
| Exhaust | 0.4292 inch | ||
| Valve Spring | Free Length (Approx) | Intake and Exhaust | 1.9134 inch |
| Spring Force (Valve Closed) | Intake and Exhaust | 70.92722 - 79.24515 lbs. @ 1.6099 inch | |
| Spring Force (Valve Open) | Intake and Exhaust | 176.6998 - 193.3357 lbs. @ 1.167 inch | |
| Number of Coils | Intake and Exhaust | 6.69 | |
| Wire Diameter | Intake and Exhaust | 0.1685 - 0.1715 inch | |
| Installed Height Spring Seat to Bottom of RetainerNominal | Intake | 1.613 inch | |
| Exhaust | 1.606 inch | ||
| Exhaust Manifold-Bolts | 18 ft. lbs. Tighten all manifold bolts starting at center and working outward. | ||
| Intake Manifold-Bolts | 105 inch lbs. |