Big V-8 pickups might get all the glory, but V-6 engines like Chevy's 4.3-liter are the real workhorses of any pickup truck fleet. Essentially a 350 V-8 with two cylinders cut off, this compact powerhouse has been efficiently doing the job at hand since it debuted in the 1985 model year.
The battery size for this truck and engine application is battery Group Size 78, as used by DieHard. The standard DieHard side-post replacement battery for this truck produces 685 cold cranking amps, and measures 10.8 inches long, 6.9 inches wide and 7.3 inches tall, and weighs about 36.5 pounds. As of 2013, Autocraft offers a replacement battery for this truck that produces 770 cold cranking amps, is about 0.35 inch wider and taller than the standard replacement battery, and 1.5 pounds heavier. Most replacement batteries for this truck fall within about that range in terms of amps and dimensions.
