BMW is well known for its history of inline-six (straight-six) engines, a layout it continues to use to this day despite most other manufacturers switching to a V6 layout. The more common inline-four and V8 layouts are also produced by BMW, and at times the company has produced inline-three , V10 and V12 engines.
Ford Straight 6 240-300, '64-'96 Camshafts at Competition Products! Howards, Hydraulic Flat Tappet Cam, Ford Straight 6 140-250, Howards, Camshaft, Ford 144-250 Straight Six, 63-83