Rectangle Port R1: .615”/.615” Valve Lift w/ 1.7 Rocker 229/242 Duration @ .050” 112LSA + 4* Advance Rectangle Port R2: .618”/.615” Valve Lift w/ 1.7 Rocker 233/250 Duration @ .050” 113LSA + 5* Advance Rectangle Port R3: .622"/.622" Valve Lift w/ 1.7 Rocker 240/252 Duration @ .050" 112LSA + 4* Advance Rectangle Port R4: .624”/.615” Valve Lift w/ 1.7 Rocker 245/256 Duration @ .050” 113LSA + 5* Advance Rectangle Port R5: .622"/.622" Valve Lift w/ 1.7 Rocker .659"/.659" Valve Lift w/...

Turbo R2: .615”/.610” Valve Lift w/ 1.7 Rocker 229/232 Duration @ .050” 114LSA + 4* Advance Turbo R3: .624”/.615” Valve Lift w/ 1.7 Rocker 243/248 Duration @ .050” 114LSA + 2* Advance

Designing a custom camshaft is not as simple as selecting the valve lift, duration & overlap to match the engine. At Smeding Performance, we specialize and direct our focus to ensuring the correct lobe is selected for the engine’s application & combination. There are hundreds of different lobes available on the market today, each with different ramp rates. Two different lobes can have the same duration @ .050” & lobe lift, but the speed of which the lobe accelerates the lifter can...

Cathedral Port R2: .617”/.614” Valve Lift w/ 1.7 Rocker 231/236 Duration @ .050” 112LSA + 4* Advance Cathedral Port R3: .621”/.615” Valve Lift w/ 1.7 Rocker 235/244 Duration @ .050” 114.5LSA + 4.5* Advance