Established in 1961, Automotive Precision Machinery specializes in engine rebuilding. The company services blocks that include vatted, bored, honed, line-honed, magna-fluxed, pressure testing, cam bearings installed, freeze plugs installed, thread repair, sleeves installed and resurfaced and heads that include valve job, resurfaced, magna-fluxed, pressure testing, guides installed, seats installed, rocker arm studs installed, straightened, line bore cam towers, injector tubes installed and crack repair. The company also services cranks that include grinding, straightened, welding, magna-fluxed, polished, nitriding and balancing and rods that include reconditioned, pin bushings installed and magna-fluxed. APM also provides servicing of engine parts that include pistons, rings, sleeve assemblies, cam bearings, rod bearings, main bearings, oil pumps, gaskets, cams, lifters, engine kits and crank kits. It also provides domestic, import and diesel engines, engine parts, align boring and honing equipment, crankshaft grinders and balancers, cleaning, valves and rod equipment. APM is headquartered in Forest Park, Ga.