Will advancing the cam 4 degree's make the 350 "run out of breathe" too soon? I read on the other thread to advance 2 degree's (on the 068 cam).
It won't 'run out of breath', it will still spin to 5500 no problem. Advancing the cam moves the powerband down a few hundred RPMs to a range that's more useful for the smaller 350 engine.
Keep in mind that the 068 was first used in bigger 389/400 engines and later on in 428/455 engines. Putting this cam in a smaller engine makes it act like a bigger cam, so advancing it will put it in a range that will be better matched to the smaller engine.
For a car with an auto trans this makes a big difference in performance. You probably won't need to shift it much past 5000 to make good power.
What is the difference from 2 degree's and 4 degree's?
That would be 2 degrees.
Seriously, a 2 degree difference won't be quite enough to notice, go for 4. That will be enough to shift the powerband for better torque down low without going too far.
Now my question for you: Did you use my easy method to find your rear gear ratio yet?
