Engine shakes BADLY!!

GEO said
The mutha thumper cam ,intake .497 lift duration 287

exhaust .483 lift 304 duration

And 34degrees total is more than his edelbrock heads with a modern combustion chamber need 32 degrees should be about right .

Now if he was running iron heads with an open chamber he would need the 34 degrees or more to get the motor to rev

isn't large enough to warrant that much timing and it would idle awfully high at 18 + degrees.

As far as a lazy rev the timing curve done correctly will take care of that

And to much initial timing will make it hard for the starter to crank thus hard to start also

Tune it like you are saying it will be a LAZY Dog. The reason it don't start right away is because there is NOT enough initial timing in it. Sounds like it just cranks freely from what I have read. If there is too much initial timing in it the starter will kick back. That will be your sign there is too much initial timing.

Tune it how you want. 12* initial is a JOKE. It actually sounds pretty good where it is now at 19* so your theory is shot and out the window. Enough said.