How much horsepower does a Buick nailhead have?

+ The ultimate nailhead V8, a 425 CID version offered in 1963-1966, with 4.3125-in. bore and 3.60-in. stroke. With optional dual-quad Carter AFB carburetors, it produced 360 hp at 4,400 rpm.

Who made the nailhead engine?

The nailhead was introduced for the 53 model year as a replacement for the straight-eight engine. The basic design of this engine is generally attributed to Buick engineer Joe Turner. Displacing 264 or 322 ci, the new Buicks were state-of-the-art, powerful, overhead-valve V-8s.

Is a Buick 455 a nailhead?

After increasing displacement up to 401 and later 425 cubic inches, Buick phased out the Nailhead in 1967. In 1970, Buick replaced the 400 and 430 wholesale with a 455 cubic-inch V8 that could be optioned with more than 510 pound-feet of torque from the factory.

Is a 425 nailhead a big block?

The Nailhead is not a big block.

What is a 215 V8?

The Buick/Olds/Rover 215 cubic-inch (3.5 liters) V-8 motor is one of the most fascinating and long-lived engines in automotive history. Originally conceived as an economy powerplant for GM mid-size cars, the “215” has been built in both the US and Great Britain , and has powered an astonishing array…

What is a nailhead engine?

Nail•head [neyl-hed]: A family of Buick engines that have vertical valves, a pent roof combustion chamber. The distributors were in the rear and the starters were on the drivers side(unlike later Buick engines), they were made from 1953 to 1966 in 264-322-364-401-425 sizes .

What is a nailhead motor?

It was an OHV pushrod engine like the then-new Oldsmobile “Rocket” V8. It became known as the “Nailhead” for the unusual vertical alignment of its small-sized valves, features that were the result of putting both intake and exhaust valves on the intake manifold side of the ” pent-roof combustion chamber ” used in this engine series.