Originally Posted by Brian Morency
So basically, when a engine reaches the cams power band then the motor comes alive?
The feeling of "coming on the cam" you're experiencing is accentuated by not having the optimal gearing and optimal stall speed torque converter.
Ideally, you should be set back in the seat and stay planted there through the rev range. Instead of that, you have a lower stall RPM than the cam/engine combo wants, and possibly you're geared higher (lower numerically) than you should be. This causes the engine to accelerate slower until it hits the power band, and that is the feeling of "boost" you have noticed. the engine will
accelerate the vehicle, but slower than if the gears/stall speed were allowing the engine to start off in sweet spot of the power band.
I would suggest you find out the cam specs, or get the part number and look the specs up. Knowing that, along w/the compression ratio and the other things about the engine like what type heads, intake, carb, exhaust system, etc., will let you choose the rear gear ratio and/or torque converter to match the engine. You might look into an OD automatic trans. That will give you a low first gear- even with high rear gears- and the OD will let the engine spin slower at highway speed, especially beneficial if you install lower rear gears like 4.11's.