Cylinder Head Assembly: Specifications
| LH cylinder head-to-block bolts | Stage 1: | 37 ft.lbs. |
| Stage 2: | Loosen the bolts one full term | |
| Stage 3: | 22 ft.lbs. | |
| Stage 4: | Rotate an additional 90° | |
| Stage 5: | Rotate an additional 90° | |
| RH cylinder head-to-cylinder block bolts | Stage 1: | 37 ft.lbs. |
| Stage 2: | Loosen the bolts one full term | |
| Stage 3: | 22 ft.lbs. | |
| Stage 4: | Rotate each bolt 90° | |
| Stage 5: | Rotate each bolt an additional 90° | |
| LH exhaust manifold-to-LH cylinder head bolts | Stage 1: | 8 ft.lbs. |
| Stage 2: | 16 ft.lbs. | |
| LH exhaust manifold-to-Y-pipe flange nuts | 30 ft. lbs. | |
| Lower intake manifold-to-cylinder head bolts | Stage 1: | 11 ft.lbs. |
| Stage 2: | 24 ft.lbs. | |
| RH exhaust manifold-to-RH cylinder head bolts | Stage 1: | 89 in.lbs. |
| Stage 2: | 16 ft.lbs. | |
| RH exhaust manifold-to-RH catalytic converter flange bolts | 30 ft. lbs. | |
| Upper intake manifold-to-lower intake manifold bolts | Stage 1: | Tighten hand tight |
| Stage 2: | 89 inch lbs. | |
| Upper intake manifold support bracket bolt | 35 ft. lbs. | |
| Upper intake manifold support bracket nut | 53 inch lbs. | |
| Head gasket surface flatness | 0.003 inch @ 6.00 inch | |
| Head gasket surface finish | 1.0-3.3 Micrometers (RMS) | |
| Gasket surface flatness | 0.003 in. over 6.00 in. | |
| Camshaft sprocket-to-camshaft bolt | 46 ft.lbs. | |
| Valve guide bore diameter | Intake and Exhaust | 0.2772 - 0.2763 inch |
| Valve seats | Width-Intake | 0.06-0.08 inch |
| Width-Exhaust | 0.08-0.10 in. | |
| Angle | 45° | |
| Runout (T.I.R.) | 0.003-0.004 in. | |
| Bore diameter insert counterbore diameter | Intake | 1.8542 in. MAX |
| 1.8532 in. MIN | ||
| Exhaust | 1.5645 in. MAX | |
| Valve stem to guide clearance | Intake | 0.001-0.0028 inch |
| Exhaust | 0.0015-0.0033 inch | |
| Valve head diameter | Intake | 1.57 inch |
| Exhaust | 1.30 inch | |
| Valve face runout limit | 0.002 in. | |
| Valve face angle | 45° | |
| Valve stem diameter (STD) | Intake | 0.2744-0.2752 inch |
| Exhaust | 0.2740-0.2748 in. | |
| Over size | Intake | 0.289-0.290 inch |
| Exhaust | 0.289-0.290 inch | |
| Intake | 0.304-0.305 inch | |
| Exhaust | 0.304-0.305 inch | |
| Valve springs compression pressure | Valve open to maximum lift | 193-217 lb @ 1.17 inch |
| Valve closed | 64-72 lb 1.60 inch | |
| Free length (approximate) | 1.83 inch | |
| Installed spring height | 1.650-1.736 inch | |
| Service limit | 10% Force Loss @ Specified Height |