Lincoln Engine Series

Cast nodular iron crankshaft supported by five bearing journals at 2.62inch

Rod journals measured 2.249 inches

8.0:1 compression ratio and 205hp at 4200 RPM

An improved Holley carb, high lifter cam, dual diaphram distributor and freer flowing exhaust

Last only for 1955

Increased bore to 3.94 inches

Compression ratio of 8.5:1 with 225hp at 4400RPM and 332ft.lb of torque

Introduced in 1956

Increased bore and stroke to 4.00X3.66

285hp @ 4600 RPM with 402ft.lb. of toque

Compression ratio is 9.0:1

Larger exhaust valves at 1.64 inches, bigger fuel pump and dual diaphram distributor

Black painted valve covers and air cleaner

Following production year had slightly revised enhancements including 10.1:1 compression, Carter four barrel carb and a spin on/off oil filter