Quote:

... raised shift point from 7200 to 7500 = 9.37@143.15mph with a 1.30 sixty foot time.

Heres the combo;
Porter Racing Head Mega-540,
Indy-1s w/2.25 intakes 360cfm.
Comp Roller 281/292 .727"/.706" 112ls 108cl
Indy t-ram,1050's.
ATI 5800 9"conv. 4.56D60 33x17GY's 3300# with driver

Sounds like a lot of fun.
That thing likes some RPM!
I shift my 511 CID at 6700 (light comes on, actual slightly higher). Never tried over 7000.
My heads are close to yours, maybe a touch worse. Must be that roller cam.
I am running a Comp Cams MM305S-10 solid lifter, 279/287, .693/.672" with 1.6 rockers, 110 LSA

1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1