602 Crate Engine Specifications
by Paul NovakThe GM 602 crate engine is a factory designed performance motor produced by General Motors that is intended for racing and off-road use. The engine derives its more common 602 moniker from the last three digits of its part number identification of 88958602. These engines are generally popular for circle track and other racing applications where engine size and power is strictly regulated to encourage more competitive racing among participants.
Basics

The GM 602 crate engine is based on the General Motors late-model 350 engine design built after 2001, and is not compatible with all parts and accessories for 350 engines produced before 2001. It has a cast iron block and cylinder heads, and there are no provisions for emissions controls. The engine is a 90-degree V8 design with a centrally located camshaft. The 602 is designed for off-road use only and is not intended for street use. This engine is sealed, which means that it is built with specialized bolts that cannot easily be removed. This is done to ensure against tampering or modification of the engine in order to increase its power.
Intake Manifold
Cylinder Heads
Crankshaft/Rotating Assembly/Compression

The crankshaft in the 602 engine is cast iron and secured by four bolt main caps, and is designed to use a one-piece rear main oil seal. The connecting rods are powdered metal and the pistons are cast aluminum. The engine has a 4-inch cylinder bore and a 3.48-inch crank stroke that produces a 9.1-to-1 compression ratio.
Ignition System
Oil System
Performance
References
Writer Bio
Paul Novak is a freelance writer specializing in Web content creation. He has owned his own business for seven years, and has for 10 years written on a variety of subjects from politics to the paranormal. His articles critical of paranormal claims have appeared in "Xproject" magazine and "Ufoevidence."