These classic models built a reputation for straight-line speed during the Golden Age of American muscle cars.

Jenkins Competition consistently leads the race to produce maximum power levels from the Chevrolet "little-block," as Grumpy refers to it.This 331-cubic-incher began life in much the same manner ...

The Modified Production cars ... Jenkins-prepped machinery has accounted for twenty or more national records each season since 1965. The "Grumpy" label was pre-'65.