[J Persons]

The reason I'm thinking about getting a mechanical roller is that it will rev much higher than a hydraulic roller. Hyd rollers lifters don't work very well with seat pressures much over 130lbs. And if the cam needs less overlap to be compatible with an IR manifold and carbs, the cam will need about .600 lift to flow well and produce power at 6800 to 7000 RPM. This will be a 0 balanced Dart or Ford Boss block, with a 3.25 stroke, and a 4 plus .030 or .060 bore. I want to use a 2.05 intake valve and the larger bore works well with keeping the valve away from the cylinder wall. John