New 290 HP Crate Motor

[1970 CST Short Wide]

Bought this yesterday for my son's 71. The old 283 that the last owner put in gave up. Chevy just came out with this one a few weeks ago. Not bad for $1599

It goes in this week-end, I'll let you know how it goes

Description
350/290 HP Technical Information
Horsepower ...... 290 @ 5100 RPM
Torque .......... 326 Ft. Lbs. @ 3750
Max. Recommended RPM .... 5100
Compression Ratio ....... 9.5:1
Block .................10066034
iron four bolt with two
piece rear main seal
Connecting Rods .. 10108688 Powdered Metal
Pistons & Pins.....12514101 Aluminum
Piston Rings ......12507985
Camshaft ..........3896962 Flat Tappet
Rocker Arm.........10089648 1.5 Ratio
Intake Valves .....10093027 1.94"
Exhaust Valves ....14095451 1.50"
Lifters ...........5232720 Flat Tappet
Oil Pump ..........12555284
Oil Pan ...........10066039
Spark Plugs .......R45TS Ignition Timing ...34deg
Fuel...............87 Octane


NOTE: The 290 horsepower was attained on the Dyno with the following specifications:

Carburetor.............600 CFM Holley (4150) P/N 12497147
Headers....1 3/4 inch diameter x 35 inch long with 3 inch collector
Timing.....34 degree BTDC total advance