Big lift and duration spec focuses on top end power. Requires BC spring/retainer kit. ECU and cylinder head work will enhance overall performance. Due to high lobe lift, it is mandatory that you change the valve guides and use BC valve seals. Failure to do so will result in retainer to guide contact causing damage to the head and/or cams.
| Adv Dur (.020") |
265°/265° |
| Dur @ .050 |
248°/244° |
| Valve Lift (1:1) |
.450"/.450" |
| Valve Lift (mm) |
11.43/11.43 |
