Cylinder Head Specifications
CYLINDER HEAD
| Application | Specification | ||||
|---|---|---|---|---|---|
| Cylinder Head Height (Minimum) | 5.063" (128.6 mm) | ||||
| Valve Seats | |||||
| Intake Valve | |||||
| Seat Angle | 45° | ||||
| Seat Width | .039-.071" (1.00-1.80 mm) | ||||
| Seat Bore Diameter | 1.795" (45.60 mm) | ||||
| Exhaust Valve | |||||
| Seat Angle | 45° | ||||
| Seat Width | .051-.083" (1.30-2.10 mm) | ||||
| Seat Bore Diameter | 1.441" (36.60 mm) | ||||
| Valve Seat Inserts | |||||
| Intake | |||||
| Standard | |||||
| Insert Diameter | 1.8957" (48.150 mm) | ||||
| Bore Diameter | 1.8898" (48.000 mm) | ||||
| Oversize 1 | |||||
| Insert Diameter | 1.9035" (48.350 mm) | ||||
| Bore Diameter | 1.8976" (48.200 mm) | ||||
| Oversize 2 | |||||
| Insert Diameter | 1.9114" (48.550 mm) | ||||
| Bore Diameter | 1.9055" (48.400 mm) | ||||
| Exhaust | |||||
| Standard | |||||
| Insert Diameter | 1.5807" (40.150 mm) | ||||
| Bore Diameter | 1.5748" (40.000 mm) | ||||
| Oversize 1 | |||||
| Insert Diameter | 1.5886" (40.350 mm) | ||||
| Bore Diameter | 1.5827" (40.200 mm) | ||||
| Oversize 2 | |||||
| Insert Diameter | 1.5965" (40.550 mm) | ||||
| Bore Diameter | 1.5906" (40.400 mm) | ||||
| Installed Height/Bore Depth | |||||
| Intake & Exhaust | |||||
| Standard | |||||
| Insert Diameter | .295" (7.50 mm) | ||||
| Bore Diameter | .289" (7.35 mm) | ||||
| Oversize 1 | |||||
| Insert Diameter | .303" (7.70 mm) | ||||
| Bore Diameter | .297" (7.55 mm) | ||||
| Oversize 2 | |||||
| Insert Diameter | .311" (7.90 mm) | ||||
| Bore Diameter | .305" (7.75 mm) | ||||
| Installing Temperature | |||||
| Valve Seat Insert | -240°F (-150°C) | ||||
| Cylinder Head | 122°F (50°C) | ||||
| Valve Guides | |||||
| Valve Guide Inside Diameter | |||||
| Standard | .3150" (8.000 mm) | ||||
| Oversize 1 | .3189" (8.100 mm) | ||||
| Oversize 2 | .3228" (8.200 mm) | ||||
| Valve Guide Installed Height | .531-.551" (13.0-14.0 mm) | ||||
| Valve Stem-To-Guide Oil Clearance | .031" (.80 mm) | ||||