Guys, I'm picking up my parts for my 383 project...Is like a 9.6-9.7 CR ok for a 383 on 93 with vortec heads? It's Scat kit..Would you use forged or hypereutectic pistons.....Thank you...

Hood hypers are almost as expensive as reasonable forged pistons.

Icons are good quality budget forged pistons. The Keith Black line is their Hyper pistons. They have good tech and machining in them. The piston diameter area above the top ring is mutli-grooved to attenuated knocking pressures.

Make sure you use D-Dish or flat tops IOT maintain your quench deck surfaces. You'll need them to help out with the 9.7 CR.

Vortec heads (chambers) won't want a lot of timing. 32° area. Using a Daytona Sensors digital control on the distributor lets you get the best low speed and cruise combustion/efficiency.

Not having sufficent timing will heat up the exhaust valves and heads, and create more potential for detonation. Valves have 75% of their absorbed heat dissipated through the seats, and 25% through the stems.

Is the 9.7 safe or right on the edge?...Thx..

Should be fine. Stock vortecs ran 9.4 on 87 octane. And vortecs can take a good amount of advance to boot. I’m assuming you’ll be running rec 90 gas