4 Piston Racing USAC Midget CAMSHAFTS (K-Series)

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  • Regular price $1,300.00

This camshaft was specifically designed for our USAC midget engine program, and is now available for purchase outside of our engines.  This is NOT a big drag race cam.  It provides plenty of low end punch to pull the car off the corners, but will allow you to run your engine up to 9800+ RPM down the stretch.  It is designed for smooth valve operation that is easy on the cam chain, guides, and tensioner.  Pair this with our 4P Midget Cylinder Head and 4P Adjustable Cam Gears for a complete package that can produce 380+hp at 153 cubic inches.  Camshaft can also be used in 145 cubic inch engines, with great results.

Intake Lift - 0.533"
Intake Duration - 260 @ 0.050"
Exhaust Lift - 0.513"
Exhaust Duration - 260 @ 0.050"

Recommended Valve Spring:
4 Piston 1002K PSI Indy Car - Heavy Duty longest lasting dual spring available
Ferrea S10100 - Standard Road Race/Drag Race
Supertech H1021D - Standard Road Race/Drag Race
Other springs kits and brands may be suitable. This is our best recommendation.

Recommended Rocker Arm:
Ferrea single roller rocker must be used to meet non-VTEC USAC rules.  It is not recommended to lock VTEC function on an OEM 3-lobe rocker.

4 Piston camshafts are Made in the USA from tool steel billet cores, by experts with over 50 years of camshaft design expertise. These cams are not only designed to make good power, but they are designed to promote long timing chain and tensioner life and proper valvetrain harmonics using the latest in camshaft design software.