Picked up a new engine manual. Print date February 1971, No. 98042. Covers the improved F engine starting with engine number F243298, with a supplement section for engines starting #F294920, October 1969. This is for the FJ land cruiser and FA gasoline truck. Engine weight with clutch and air filter 633.6 Lbs. With the 2 barrel carburetor and 7.8 to 1 compression ratio it was rated at 155 HP @ 4000 RPM 230 Ft-Lb @ 2200 RPM. 8)