| ENGINE FLYWHEEL DIMENSIONS Standard SAE Dimensions in inches (millimeters) | |||||
| SAE No |
XE | XF | XG | Tapped Holes | |
| Qty | size | ||||
| SAE 21 | 26.500 (673) | 25.25 (641) | 0 (0) | 12 | 5/8-11 | SAE 18 | 22.500 (572) | 21.38 (543) | .62 (16) | 6 | 5/8-11 |
| SAE 14 | 18.375 (467) | 17.25 (438) | 1.00 (25) | 8 | 1/2-13 |
| SAE 11-1/2 | 13.875 (352) | 13.12 (333) | 1.56 (40) | 8 | 3/8-16 |
| SAE 10 | 12.375 (314) | 11.62 (295) | 2.12 (54) | 8 | 3/8-16 |
| SAE 8 | 10.375 (264) | 9.62 (244) | 2.44 (62) | 6 | 3/8-16 |
| SAE 7-1/2 | 9.500 (241) | 8.75 (222) | 1.19 (30) | 8 | 5/16-18 |
| SAE 6-1/2 | 8.500 (210) | 7.88 (200) | 1.19 (30) | 6 | 5/16-18 |
| Delco 17.75 | 17.755 (451) | 15.50 (394) | .72 (18) | 8 | 5/8-11 |
| Delco 15.50 | 15.500 (394) | 13.88 (353) | .72 (18) | 8 | 5/8-11 |
| Delco 12.75 | 12.750 (324) | 11.00 (279) | 0 (0) | 4 | 1/2-13 |
| ENGINE FLYWHEEL HOUSING DIMENSIONS Standard SAE Dimensions in inches (millimeters) | ||||
| SAE No |
XD | XB | Tapped Holes | |
| Qty | size | |||
| 00 | 31 .000 (787) | 33.50 (851) | 16 | 1/2-13 |
| 0 | 25.500 (678) | 26.75 (679) | 16 | 1/2-13 |
| 1/2 | 23.000 (584) | 24.38 (619) | 12 | 1/2-13 |
| 1 | 20.125 (511) | 20.88 (530) | 12 | 7/16-14 |
| 2 | 17.652 (448) | 18.38 (467) | 12 | 3/8-16 |
| 3 | 16.125 (410) | 16.88 (429) | 12 | 3/8-16 |
| 4 | 14.250 (362) | 15.00 (381) | 12 | 3/8-16 |
| 5 | 12.375 (314) | 13.12 (333) | 8 | 3/8-16 |
| 6 | 10.500 (267) | 11.25 (283) | 8 | 3/8-16 |