The Horse power depends on the size of the engine. An example would be a 1987 Chevy Silverado with a 5.0L engine has 305 horse power, the 5.7L has 350 horse power, that is stock I do believe that Wikipedia does have GM engine size in litres on one the posts if u run a search. I would suggest trying that, because I'm not sure if the 79 K20 came with different engine size options and if it did what they'd be my best guess is they most likely came with the 5.0L(305) or the 5.7L(350) and 8.0L(454).
The factory numbers are 125hp for the 5.7 of that year (350). Horsepower and cubic inches are not dependent on one another.
what is stock differential ratios for a 1979 gmc jimmy
285 horsepower
0.060
With only that info it could be, 1970, 350ci, 255 HP, 4 bbls, K10 & K20, C10 to 3500, standard 3 spd or a/t, or 1979, 350ci, 165 HP, 4 bbls, C10 to 2500, conv. cab, manual trans, fed.
For a 305 with a 4brl carb. it would be about 145 hp. For a 305 tbi it produces 215hp from factory. No, a 305 TBI is rated at 185 HP stock.
what bond is k20
YZF 450 puts out 39 hp stock.
42 hp
the stock cougar has 170 hp
176 hp
Its a 155 hp
38 HP stock for the 85-86. *40 Hp stock for 85/86