| Stock | DOA | |
| Horse Power | 116 | 150 |
| Bore/Stroke | 92mm/89mm | 93mm/89mm |
| Displacement | 144.4ci 2366cc | 147.3ci 2418cc |
| Timing | 5oBTDC | 8oBTDC |
| Plug Gap | .032" | .042" |
| Intake Duration | Exhaust Duration | Intake Lift | Exhaust Lift | |
| Stock EFI | 248o | 280o | 10.0mm | 9.7mm |
| TRD Level 1 | 262o | 272o | 10.5mm | 10.9mm |