[concobra]

The desk top dyno makes some assumptions that are misleading when looking at Hyd. roller cams. It assumes all roller patterns are a fast and aggressive ramp design as seen on racing cams. This does not hold true for street design roller cams whether hyd. or solid. To consider an accurate HP & torque number you need to reduce the desk top dyno figures by 25 the 30 HP & ft. lbs. of torque.

I have used the 349541 grind. It produced power until 5100 RPM then went into valve float ( typical for hyd rollers pushing heavy FE valves.) When going to heavier valve springs the hyd lifters began to collapse at 5400. Either way the motor signed off to early for the size of the cam. I pulled the hyd. roller and went with a solid roller over 248 degrees of intake @ .050 lift. This pulled power up to 6000 RPM which was my goal. Using a roller cam with less than 240 degrees of intake is a waste of money as the benefits of the aggresive ramp are lost by the low duration numbers.

Hope this helps.