Valve Train Parts

Callies makes finish-ground camshafts and camshaft cores for Duramax, Power Stroke, Cummins, Gen III Hemi, Godzilla, LS, small-block Chevy and Ford, and big-block Chevy engines, including its Freedom Series cams and Carbocore and Indurocore cores for cam grinders.

Made in: Fostoria, OH (camshafts machined and heat-treated in-house).

Source: Callies camshafts, checked 10/2026

COMP Cams performance camshafts, including Xtreme Energy, Magnum, Thumpr and Mutha' Thumpr grinds plus Nitrous HP cams, in hydraulic roller, solid roller and flat tappet types. They are sold alone or as cam-and-lifter kits for Chevy, GM, Ford, Chrysler, Dodge, AMC, Jeep, Pontiac, Oldsmobile, Buick and import engines. COMP also grinds custom camshafts to order. It is part of the Edelbrock Group.

Made in: Memphis, TN. COMP's manufacturing plant and R&D center are on Democrat Road in Memphis, where the company was founded in 1976. Headquarters and distribution are in Olive Branch, MS.

Source: COMP Cams History, checked 10/2026

Crower makes hydraulic and mechanical, flat-tappet and roller camshafts in series such as Compu-Pro, Beast, Street Roller, Turbomaster and Ultra-Action, for Chevy, Ford, Mopar, Pontiac, Buick, Oldsmobile, AMC and import engines, plus lifters, rocker arms and valve springs.

Made in: San Diego, CA. The company says its camshafts, lifters and rocker arms are made in the USA.

Source: PRI, Dec 2025, checked 10/2026

Elgin PRO-STOCK performance camshaft kits, matched with valve train parts. The line includes the Sloppy Stage 1, 2 and 3 cams and Secret Sauce X for street, turbo and nitrous builds, plus GM LS cams for short-track racing and the LS 376 "Hot Cam" for trucks and light towing. Elgin Industries has been family owned since 1919.

Made in: Elgin, IL. Elgin engineers and manufactures the cams, and calls the Sloppy Stage cams "made-in-USA." The company also runs its own heat-treat operation in the USA.

Source: Elgin PRO-STOCK Camshaft Kits (2025), checked 10/2026

Engle Cams grinds camshafts for air-cooled Volkswagen engines and for Buick, Chevrolet, Dodge and Ford, and offers custom grinds for any application. It also sells complete cam kits and spring and lifter kits. The company has been grinding cams since 1941.

Made in: Long Beach, CA. Engle says its cams are made in the U.S.A. from cam blanks made in America from American iron.

Source: Engle Cams, checked 10/2026

Harland Sharp makes roller rocker arms and rocker systems: stud-mount, pedestal-mount and head-specific rockers, plus shaft systems for Chevy, Ford, Buick and Mopar, BMC rocker assemblies, stud girdles and parts. Every rocker arm carries a lifetime guarantee against manufacturing defects. Harland Sharp, a Northeast Ohio tool and die maker, invented the first high-performance rocker arm in the 1950s. His family still runs the business.

Made in: Strongsville, OH, at its Custom Speed Parts shop. The company says every part is made in the United States from American-made materials, and each rocker is hand inspected and packed there.

Source: Harland Sharp About Us, checked 10/2026

Jesel makes valve train parts for racing and high-performance engines: shaft rocker systems (Sportsman, Pro Aluminum, Pro Steel and Nitro/Alcohol series), LS pedestal rockers, premium stud rockers, roller lifters in tie-bar, keyway, cartridge and guided styles, and camshaft belt drives. Its Custom Shop also builds one-off designs. Founded in 1980.

Made in: Lakewood, NJ. Jesel says every component is engineered and manufactured in-house in the USA on its own CNC machining centers, at a 65,000 sq. ft. climate-controlled plant.

Source: Jesel Valvetrain, NMRA, checked 10/2026

Johnson Lifters (Hylift Johnson) makes hydraulic lifters for performance, racing, marine and classic engines, including performance hydraulic roller lifters and variable-duration designs for more torque and vacuum. Features include axle oiling for high spring pressures and high-flow pushrod seats that lubricate the rocker arms.

Made in: Taylor, MI (company location). Johnson says its lifters are made in the U.S.A. and go through 21 primary and 15 secondary processes, with inspection and testing.

Source: Johnson Lifters, Race Engine Technology, checked 10/2026

Manton makes custom and stock-size pushrods in one-piece and three-piece designs, including tool steel pushrods, for GM, Mopar and Ford gas engines and Duramax, Cummins and Powerstroke diesels. It also makes valve springs, rocker arm systems, and adjusting screws and nuts. The family business was started by Terry and Robin Manton, and Terry began building pushrods in 1978. Robin runs the company today.

Made in: Lake Elsinore, CA. Manton says its parts are designed and manufactured in-house from heat-treated premium materials, with pushrod tips CNC-machined in-house, and marks its products "Made in the USA."

Source: Manton About Us, Race Engine Technology, checked 10/2026

PAC Racing Springs makes valve springs for drag racing, circle track, street performance, diesel and motorcycle engines. It also sells complete valve spring kits, spring retainers, valve locks, seats, shims and valve train tools. PAC is part of Race Winning Brands.

Made in: Southfield, MI. PAC says all its valve springs are made in the USA at its Southfield facility.

Source: PAC Racing Springs: What We Do, checked 10/2026

Scorpion Racing Products makes aluminum roller rocker arms and shaft-mounted rocker systems for Ford, Chevy, Pontiac, Oldsmobile, Chrysler, AMC and Jeep engines. Its lines include the Race, Endurance and Off-Road series, plus stud girdles, shims and other parts. The rockers carry a lifetime warranty. The company has been in business for more than 20 years.

Made in: Ocala, FL. Scorpion says every product is made there, on automated, robot-controlled tooling that runs around the clock, and each rocker is stamped "MADE IN USA." It also has an in-house engine building department and a dyno for testing.

Source: Scorpion About, checked 10/2026