MANUFACTURER: Kelford Cams
ENGINE MODEL: 4G63 EVO 8
CAMSHAFT PN#: 8-TX264
SPEC CARD#: 133984

INFO

Stepping up to a Kelford 264 camshaft set showcases the performance left on the table by the factory bumpsticks. While idle quality will barely be affected, these camshafts allow for an extended powerband that produces usuable power to 8,500 RPM. In addition, peak power will increase nearly 20 percent. On our test engine, we picked up nearly 85 more horsepower at the wheels from the upgrade to the Kelford 264s. Of course, valvespring upgrades are a must when planning to exceed the factory redline. These camshafts are best suited to a factory intake manifold. The addition of a large-runner manifold, like the AMS, will not allow for optimized performance in the 3,000-to-4,500 RPM range.

RUNDOWN

536.4 WHP @ 7,600 RPM
397.3 LB-FT @ 6,000 RPM

Peak power checked in at 7,600 RPM with a flattening of power as engine RPM moved past this point. Peak boost was reached at about 4,500 RPM. A flat torque band from 4,600 to 7,800 RPM delivered over 350 lb-ft of torque. Peak torque came in at 6,000 RPM. Highest VE values were recorded at 6,500 RPM. VE figures superior to the stock camshafts at all engine speeds from 4,000 RPM and beyond.