MANUFACTURER: Kelford Cams
ENGINE MODEL: 4G63 EVO 8
CAMSHAFT PN#: 8-TX272
SPEC CARD#: 133942

INFO

If you are running an engine management solution that allows for fine tuning of the engine at idle, the Kelford 272s will definitely deliver more power than the 264s, at the expense of a slightly lopey idle. Compared to the stock cams, the Kelford 272s raised peak power output by nearly 25 percent. On our test engine, we picked up almost 110 more horsepower at the wheels from the upgrade to the Kelford 272s. These cams faired better than the 264s below 4,500 RPM on our test engine equipped with the large-runner intake manifold. Normally, the 264s would outperform the 272s up to the 4,500 RPM range.

RUNDOWN

560.6 WHP @ 8,300 RPM
411.3 LB-FT @ 6,000 RPM

Peak power checked in at 8,300 RPM while the power curve stays virtually flat from 7,800 RPM until 8,500 RPM. Peak boost was reached at about 4,600 RPM. A flat torque band from 5,000 to 7,800 RPM delivers over 375 lb-ft of torque. Peak torque came in at 6,000 RPM. Highest VE values were recorded at 8,000 RPM. VE figures superior to the stock camshafts at all engine speeds from 3,500 RPM and beyond.