At Nitemare Performance, we have built Pontiac motors with a wide range of performance
levels, from 400 horsepower 'grocery getters' to streetable engines generating in excess of 750 horsepower. We intend to eventually publish dynamometer data for many of the engines we have produced. However, for the time being, we will present dynamometer data for three of our specialty engines: our 'SD455 Motor', our '462-inch Stroker Motor', and our 'Edelbrock 455 Street Motor'.
The SD455 has a displacement of 461 ci, a 9.2:1 compression ratio, a 0.550" lift flat tappet camshaft and a Nitemare ported intake. This motor runs on pump gas, idles at 1100 RPM and runs best on the street with a tight 8-inch torque converter. View the SD455 dyno specs.
The Solid Flat-Tappet Stroker Motor is based on a 400 ci block, but displaces 462 ci. It has a compression ratio of 10.4:1, a 0.600"-lift custom-ground flat-tappet camshaft, an Edelbrock Torker II intake, and Edelbrock heads. This motor runs on pump gasoline, idles at 1100 RPM and runs best on the street with up to a 10-inch torque converter. View the Stroker Motor dyno specs.
The Edelbrock 455 Street Motor utilizes a stock-stroke crank & stock-length rods, 455 block and Edelbrock heads. It has a displacement of 461 ci, a compression ratio of 9.8:1, a 0.666" lift solid roller camshaft and a Nitemare-ported intake. This motor also runs on pump gasoline, idles at 1200 RPM and runs best on the street with a tight 8-inch torque converter. View the Edelbrock 455 dyno specs.