Which one?
the 81 has 396 bhp if it still has the stock 396 engine in it. hope that helps ya
1981 mid-life cycle facelift; 3.4 R/V series; 3.5 sidesaddle fuel tank, half-ton model were the C10 and K10 long-bed and short-bed trucks. While many prior C/K half-ton trucks has used a six-lug bolt pattern (6x5.5") for the horsepower and torque output was increased to 210 horsepower, and 300 pound-feet of torque.
If it is the 5.7L 350 V8, then it has 175 Horsepower
190hp
42
yes that's right
Mercon
Depends on the engine
81hp
What wont need more info.
ADVERTISED HORSEPOWER IS--155HP @ 4400 RPMs.