New
Normal
Medium idle
Strong mid range
Needs comp
Standard auto will suit
See fitting notes
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 1.65 Rocker | Lobe Sep Angle |
Lash
Measured Hot |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| Advertised | @.050” | |||||||||
| IN | EX | IN | EX | IN | EX | IN | EX | |||
| 1800 - 4800 | 4890-8 | 273° | 277° | 213° | 217° | 0.476 | 0.485 | 108 | HYD | HYD |
Must use performance springs.
Must use performance retainers.
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. View our Downloads tab for a Flat Tappet run in procedure check list.