Doug Herbert solid cam?

I think it just needs a 3,000--3,500 stall converter if its an auto and or 4,10 gears

These little motors do make the best power from 3,000 up. You don't make torque but let the gears make the torque

This is why those TA 340's had 3.55 at a min, gears from the factory with 3.91's--4.10 gears being the best comprise. It really needs 4.56 gears but for the street I go with 3.91 AND a high stall converter if its an auto trans

Leave the cam alone, let that motor rev. More compression by milling the cylinder heads and a thinner head gasket would also help. Don't you have like 98 octane fuel down there ?