Depending on other variables like exhaust , cams , and carburetor set up 45-50
89bhp 43flb tourqe
5 hp and 6 ft llbs tourqe
210 hp at 4500 rmps and 265 foot pounds of tourqe
Stright out of the book: Advertised Horsepower is} 400 CID with a 4-barrel Carb. 175 HP @ 3600 RPMs. { Torque } 290 FT. LBS @ 2800 RPMs. { BORE and STROKE } 4.125 is the Bore. Stroke is 3.750 Measured in inches.
550lb of tourqe
Should be about 115 The 2.8 multi-port was redesigned in 1987 it had increased bore and stroke. The horsepower was increased from 120hp to 130hp as of 1987.
Boring out an engine to get more horsepower is a bit of an art form. The actual increase in horsepower will depend on the bore ( the new volume of your cylinders ) and the weight of the car. Keep in mind that when you bore out your motor you are going to have some differences in fuel and air requirements. This means oversize valves need to go in your head or larger injectors and, depending on your ecu and o2 programming, maybe a high performance chip. The actual increase in horsepower is not easily calculated; even with the actual size of the bore and type of car.
290 Is the gm spec around 410lbs of tourqe
cc means how much horsepower in increment of 10 so 2351 is 235.1 hp 2.4 means how many liter and 86.5mm bore means how big your cylinders are in circumference.
340 Horsepower 340 Horsepower
hp: about 285 tourqe: about 333
1001 horsepower