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High Performance 294/292 Degree, 12.50/12.00mm high lift drag racing cams for EVO 8 4G63.

The Kelford Cams range of camshafts for Mitsubishi 4G63 DOHC engines are renowned worldwide for their superior results. This range is for the DOHC 4G63T Evolution 8 engine. 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.

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 Profiles

8-TX294HL Camshaft Set:

  • 294/292 Degree advertised duration, 12.50mm/12.00mm
  • High lift Drag racing cams.
  • These camshafts suit engines running up to 45lb boost and 9500rpm with our recommended valve spring.

Technical Specifications

Valve Clearance:

Intake: Set at the
Exhaust: Set at the

Cam Lift: Intake: 7.23mm Exhaust: 6.94mm
Rocker Ratio: Intake: 1.73 Exhaust: 1.73
Nett Valve Lift: Intake: 12.50mm Exhaust: 12.00mm
Advertised Duration @ 0.10mm Intake: 294 Exhaust: 292
Duration @ 1.00mm VALVE LIFT Intake: 250 Exhaust: 244
Timing @ 1.00mm VALVE LIFT IVO: 19 BTDC EVO: 59 BBDC
Suggested Centre Lines: Intake: 106 Exhaust: 117
VALVE Lift @ TDC Intake: 2.69mm Exhaust: 1.35mm