COMP Cams 11-600-4 Thumpr 279TH7 Flat Tappet Hyd. Camshaft for Big Block Chevy 396 - 454 EnginesThumpr 227 241 Hydraulic Flat Cam for Chevrolet Big Block 396 454 High performance street, stock converter ok, best with 2000+ converter and gears. Choppy thumping idle.

Longer piston than conventional hydraulic lifters

Continuous contact between the metering valve & pushrod seat is maintained: Eliminating excessive oiling at high RPM

this is the one EFI system with the easy-to-use features and completely configurable capabilities that accurately balance fuel and spark

the intake features the added benefits of corrosion-free stainless steel assembly bolts

Fastener Tensile Strength (psi):200

Maximizes potential of other popular engine performance upgrades such as cylinder heads

FORD TRUCK

Fastener Style:Stud

Wrench Diameter:9/16 in

-3 different length bolts (early style)

800 inches seat load and 293 pounds 1

• 3 keyway crank sprocket for 4-degree incremental adjustability