yep...those look like my 210's

You should keep the exhaust a little on the small side if you are intending on putting these on a 347 or smaller - I have not got to the exhaust yet.

On the Intake the air is REALLY lazy till about .3 lift - this is bad for a long rod motor.

If you can keep the ex. speed up( dont confuse this with unspent gasses in the chamber) - it should help on overlap to help initiate the pull on the intake.... in theory.

we shall see

Jim