Engine Components

Like all of our high performance valve springs, these Z28 springs are made from the highest quality materials and precision wound to exact specifications. They are a direct drop-in replacement for most small block Chevrolet applications. These springs will provide more open and closed pressure to maintain proper valvetrain stability on high performance cams. Valve spring maximum lift is 0.525". Be sure to check for proper retainer , seal, and guide clearence before installation on all valve springs!

Whether you are building a street or race engine, your choice of crankshaft, the central component of your engine, is crucial to the peak performance of your engine. Strength and durability are important traits of a great crank, and GM Performance crankshafts are precision-engineered to be both. GM understands that crankshaft failure can be catastrophic, so their crankshafts are made to exacting specifications and tested against the forces of high performance engines.

Whether you are building a street or race engine, your choice of crankshaft, the central component of your engine, is crucial to the peak performance of your engine. Strength and durability are important traits of a great crank, and GM Performance crankshafts are precision-engineered to be both. GM understands that crankshaft failure can be catastrophic, so their crankshafts are made to exacting specifications and tested against the forces of high performance engines.

These GM Performance hydraulic roller camshafts feature a special lobe pattern for balanced intake and exhaust flow. Different profiles are offered to produce maximum low, mid, or upper rpm power.

These GM Performance hydraulic roller camshafts feature a special lobe pattern for balanced intake and exhaust flow. Different profiles are offered to produce maximum low, mid, or upper rpm power.

These small block V8 or V6 rocker arms are available individually or in sets, and include stamped steel or aluminum rockers with mounting hardware. These self-aligning, high-quality rockers have either a 1.5:1 or 1.6:1 ratio depending on application.

These GM Performance 350 c.i.d. cast iron racing Bowtie bare engine blocks are CNC-machined from raw castings. All traditional racing modifications are provided by the factory. The heart of these blocks starts with a 3.980-4.155 in. Siamese bore cylinder case. In addition, all galleries required for dry sump oil system operation are drilled and tapped for pipe. 8620 steel bearing caps are installed on all locations of the blocks. The intermediate main bearing caps have the outer 7/16 in. diameter studs on the inner locations, and 3/8 in.

These GM Performance harmonic balancers are designed to fit your engine without any modifications. They're manufactured from cast iron, feature a steel center hub, and are available for different engine applications and balance styles. These GM Performance harmonic balancers are perfect for your high performance street vehicle.

These GM Performance hydraulic flat tappet lifters are recommended for all production and high-performance engines featuring a flat tappet hydraulic cam. Whether you're racing or cruising around town, GM's got you covered.

These GM Performance High Output crate engine cast iron cylinder heads are designed for use with the Gen V and Gen VI design, 454 big block V8 crate engines. They feature a 118cc open combustion chamber with 2.18 in. intake valves and 1.88 in. exhaust valves with rectangular intake ports. The cylinder heads use 3/8 in. rocker arm holes for standard stud-mount type rocker arms.