Description
Choppy idle
Good low to mid range power
Need valve springs & headers
Customer to advise if engine has single or multi groove valves
Crow Cams recommend purchasing 2x bottles of ZDDP additive with any flat tappet cam, one for the initial run in and one for the first oil change thereafter
| RPM Range | Part No. | Duration | with 1.73 Rocker | Lobe Sep Angle | Lash Measured Hot |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| Advertised | @.050” | |||||||||
| IN | EX | IN | EX | IN | EX | IN | EX | |||
| 2500 – 5700 | 21686 | 290° | 290° | 224° | 224° | 0.507 | 0.507 | 108 | HYD | HYD |

