5.7 0r 6.1 with msd hemi 6 and carb

These are the factory MBT timing tables. These timing values represent the Mininmum timing advance that delivers the Best Torque.[MBT] These values also assume that the engine is NOT knock limited in any way ei: its using high octane fuel.
The PCM uses these values as a CAP or MAX to the final timing.
WOT timing for pump gas is usually a couple degrees lower.

Unless you're on a dyno measuring the HP gain/loss of timing adjustments while monitoring Knock, I'd NEVER go any higher than these values.

2005 5.7L

2007 6.1L