That is the exact cam I run in my 66 Fairlane GTA, C6, with 3.00 gears. The engine is a stock .030" over 390, Silvo-Lite pistons in the 9.6 C/R range, small port C6 heads [IIRC] with 2.09/1.65" SS valves. Intake is a Edel. Streetmaster and a 600 cfm Holley. I'm very happy with the performance, driveability and economy this cam delivers and would not think twice about using this same cam in a similar 390/410 or even a 428 build for street use.