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High Performance 280/288 Degree, 11.50/11.50mm lift high HP racing Cams for the Mitsubishi EVO 1-3 & VR4 4G63

The Kelford Cams range of camshafts for Mitsubishi 4G63 DOHC engines are renowned worldwide for their superior results. This range is for the first generation of the DOHC 4G63T, from the VR4 Galant through to the Evolution 3. All of the camshafts in this range are ground on our Toyoda CNC masterless cam grinder to consistently deliver the highest quality product.

Our 'TX' range of camshafts for Mitsubishi 4G63 DOHC engines have the best available lobe designs, featuring low seat timing and maximum valve area while retaining perfect valve control at high RPM. Every cam in the range features the same lobe design as our mega popular 272 degree camshaft which cleaned out the competition in the AMS Import Tuner back-to-back cam test.

We have developed a proven range of camshafts for this engine to suit most applications, including a low lift 272 degree cam to suit stock valve springs and high lift designs for the more serious applications.

However, if you can't find your perfect camshaft within our range, designing custom profiles is our specialty! Simply order the custom camshaft and provide us all the details of your build. Confidential development for race teams is also available.

Camshaft Profile

1-TX280R Camshaft Set:

  • 280/288 Degree advertised duration, 11.50/11.50mm lift high HP racing cams.
  • These camshafts suit well built time attack and drag racing engines using E85 fuel.

Technical Specifications

Valve Clearance:

Intake: Set at the
Exhaust: Set at the

Cam Lift: Intake: 6.65mm Exhaust: 6.65mm
Rocker Ratio: Intake: 1.73 Exhaust: 1.73
Nett Valve Lift: Intake: 11.50mm Exhaust: 11.50mm
Advertised Duration @ 0.10mm Intake: 280 Exhaust: 288
Duration @ 1.00mm VALVE LIFT Intake: 238 Exhaust: 242
Timing @ 1.00mm VALVE LIFT IVO: 12 BTDC EVO: 57 BBDC
IVC: 46 ABDC EVC: 5 ATDC
Suggested Centre Lines: Intake: 107 Exhaust: 116
VALVE Lift @ TDC Intake: 2.09mm Exhaust: 1.29mm