175 Hp @ 3600 RPMs.
Good compression, good heads, good cam.
bosch platinum
70s
245 HP @ 4000 RPMs.
most of those engines were either 265 or 325 hp.
400 block, with a 350 crankshaft. 383 cid.
About 298,400 watts.
Advertised Horsepower is. 2 bbl carburetor 145 HP @ 3800 RPMs. 4 Bbl carburetor 160 HP @ 3800 RPMs.
C 20 Chevy has 160 HP with a 4 barrel carburetor and 145 with 2 barrel carb. Both @3800 Rpms and Oil pressure 40 at 2000 Rpms...Ralph Maldonado
The 400 ci sbc was produced from 1970 to 1979 and had HP ratings from 150 to 265. If your question was more specific ie: year, model, 2 bbl, 4bbl,etc. I may have been more helpfull.
255 HP and 335 Pounds of torque