Originally Posted By HardcoreB
Originally Posted By B1MAXX
...Wheres a good place to start looking at the back-up on the flow?

The short-side radius.


But...... Do the valve job first.
SR's are pretty finicky about the transition from the bowl to the seat.

This isn't where your problem is with the flow dropping off at high lifts(that's almost certainly the short turn), but it can have a noticable impact on the final results.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads