what is the horsepower and torque for the 400 v8 in 1979? also how many 1979 gmc sierra classic 4x4 shortbox pickups were there? what are the production numbers for 1979? i own a 1979 GMC Sierra Classic. it is a shortbox with 4 wheel drive, a 400v8 and th350 auto trans. it is black with a red interior.
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