Cylinder Head Specifications
CYLINDER HEAD SPECIFICATIONS
| Application |
Specification |
| Cylinder Head Height |
| New |
5.508-5.516" (139.90-140.10 mm) |
| Minimum |
5.494" (139.55 mm) |
| Maximum Warpage |
0.0012" (0.03 mm) |
| Maximum Grind |
0.010-0.014" (0.25-0.35 mm) |
| Valve Seats |
| Intake Valve |
| Seat Angle |
45° |
| Seat Width |
0.055-0.075" (1.40-1.90 mm) |
| Maximum Seat Runout |
|
| Seat Diameter |
1.244" (31.60 mm) |
| Exhaust Valve |
| Seat Angle |
45° |
| Seat Width |
0.055-0.075" (1.40-1.90 mm) |
| Maximum Seat Runout |
|
| Seat Diameter |
1.146" (29.10 mm) |
| Valve Seat Inserts |
| Intake |
| Standard |
| Insert Diameter |
1.3426" (34.100 mm) |
| Bore Diameter |
1.3386" (34.000 mm) |
| Oversize 1 |
| Insert Diameter |
1.3504" (34.300 mm) |
| Bore Diameter |
1.3465" (34.200 mm) |
| Oversize 2 |
| Insert Diameter |
1.3583" (34.500 mm) |
| Bore Diameter |
1.3544" (34.400 mm) |
| Exhaust |
| Standard |
| Insert Diameter |
1.2441" (31.600 mm) |
| Bore Diameter |
1.2402" (31.500 mm) |
| Oversize 1 |
| Insert Diameter |
1.2520" (31.800 mm) |
| Bore Diameter |
1.2481" (31.700 mm) |
| Oversize 2 |
| Insert Diameter |
1.2599" (32.000 mm) |
| Bore Diameter |
1.2559" (31.900 mm) |
| Installed Height |
| Intake & Exhaust |
| Standard |
0.287" (7.30 mm) |
| Oversize 1 |
0.295" (7.50 mm) |
| Oversize 2 |
0.303" (7.70 mm) |
| Installing Temperature |
| Valve Seat Insert |
-240°F (-150°C) |
| Cylinder Head |
68°F (20°C) |
| Valve Guides |
| Valve Guide Bore Diameter |
| Standard |
0.4922" (12.500 mm) |
| Oversize 1 |
0.4961" (12.600 mm) |
| Oversize 2 |
0.5000" (12.700 mm) |
| Valve Guide I.D. (Installed) |
| Standard |
0.2756" (7.000 mm) |
| Oversize 1 |
0.2796" (7.100 mm) |
| Oversize 2 |
0.2835" (7.200 mm) |
| Valve Guide Installed Height |
0.173-0.197" (4.40-5.00 mm) |
| Valve Stem-To-Guide Oil Clearance |
|
| Installing Temperature |
| Valve Guide |
-240°F (-150°C) |
| Cylinder Head |
68°F (20°C) |