Description
Three crank-sprocket keyways let the 7820 timing set select straight-up, advanced or retarded cam timing in the specified Ford small-block Windsor application. The double-roller chain runs on a billet-steel crank sprocket and cast-iron cam sprocket. Use is limited to 6500 RPM.
Edelbrock Performer-Plus and Performer-RPM cams require the straight-up position. The manufacturer lists 255,289,302 and 351W engine applications; verify year-specific thrust-plate and eccentric requirements before fitting.
Specifications
| Drive Type | Chain Driven |
|---|---|
| Adjustable | Yes; Three Keyway Positions |
| Attachment Type | 3 Keyway Crankshaft Gear |
| Driver Gear Material | Billet Steel |
| Driven Gear Material | Cast Iron |
| With Full Floating Main Idler | No |
| Includes Chain | Yes |
Manufacturer Warranty
Limited 1 Year Warranty
Installation Restrictions
For 1962–64 vehicles, replace the original spacer and thrust plate with Ford C90Z-6269-A. For 1965–1972-1/2 vehicles, retain the existing thrust plate. For 1972-1/2–1984 vehicles, replace the original two-piece eccentric with Ford M-6287-B302 one-piece eccentric and retain the thrust plate. Do not reinstall the original oil slinger.
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