Crow Cams will be closed on Monday 8th June 2026 for King's Birthday Public Holiday.
Our online store will be open but orders will not be processed or despatched until Tuesday 9th June 2026.
Crow Cams will be closed on Monday 8th June 2026 for King's Birthday Public Holiday.
Our online store will be open but orders will not be processed or despatched until Tuesday 9th June 2026.
New
Normal
Tough idle
Strong mid range
See fitting notes
When selecting retainers and locks, customer must check 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
Tough idle
Strong mid range
See fitting notes
When selecting retainers and locks, customer must check if engine has single or multi groove valves
| 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 | |||
| 1600 - 4600 | 21666-8 | 268° | 288° | 204° | 214° | .481'' | .512'' | 108° | HYD | HYD |
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 Spec Sheet tab for a Flat Tappet run in procedure check list.