General Motors Corp. sees a future for engines with overhead valves, a technology most automakers have abandoned in favor of overhead camshafts. GM will introduce a family of overhead-valve V-6 ...

General Motors has spent decades refining overhead-valve V8s while much of the industry pivoted to dual overhead cam designs, ...

General Motors sees a future for engines with overhead valves, a technology most automakers have abandoned in favor of overhead camshafts. GM will introduce a new family of overhead-valve (OHV) V-6s ...

General Motors’ all-new 3.9L V6 has been honored with a Breakthrough Technology award by Popular Mechanics for its innovative use of variable valve timing in an overhead valve engine. For ages GM has ...

Overhead-valve internal-combustion engines, in which the valves are located in the cylinder head and actuated by a block-mounted camshaft via pushrods, go way back in automotive history. Production ...

It seems, for the modern American production car. that the 'L' head engine is a thing of the past. Present design trends indicate that the few remaining flathead engines now in production will be ...

The Buick Division of General Motors never had it so good. After hammering at the door of the “Big Three” for 17 years, the door suddenly opened and even Buick personnel were amazed to find that their ...

Many older cars have engines with flathead or overhead valves, and these designs also tend to more commonly used flat tappets for actuating the valves. Flat tappets place a unique demand on the engine ...

There have been many engine designs over the years, from sleeve valve to Rotary, but only two designs have endured; pushrod engines and overhead camshaft engines. *Billed as $4 plus GST every four ...

The abbreviations DOHC, SOHC, and OHV usually refer to different types of car engines. A particular setup mostly depends on the type and age of your vehicle − be it a vintage car dating back to the ...

There was no Christmas tree at the Santa Barbara Drags, just this wildly energetic guy leaping into the air with a flag. The 660-foot drag strip with 660 feet of shutoff area was just a little curved, ...