My 398 has been a 1.47 60 ft 6.888 1/8th 99.3 mph, my timing is 32 total all in by 2500.
I know mavman has had some success running lower timing just wondering if anyone else has. I haven't tried alot of things with this new combo, was going to play with the timing some. Didn't know which way i should go first, up to 34 or down to 30.
Do you think there is much ET to be found, or is the combo about maxed out.

398W
10.6:1
Edelbrock RPM heads (1.90 valve)
RPM intake
holley 950hp
Hydraulic flat-tappet 239/247@50 541/565 106lsa
1 5/8 headers
C4
ATI 8" 4.56
28x10.5 MT slicks
Ladder bar/coil over
3200 w/driver
Shift 6000