Is 426ci 360 a small block?

Things still to test, but now we are getting somewhere.

Latest flow tests......2.05 intake/1.625 exhaust on both heads. Exhaust with 1-3/4" tube.

...........ProComp/Racemaster.................LAX................OOTB LAX

Lift................IN/EX...............................IN/EX..................IN/

.100............71/57...............................71/58..................57/52
.200..........143/122...........................143/124...............124/105
.300..........200/184...........................204/176...............184/143
.400..........248/221...........................250/214...............230/191
.450..........267/230...........................271/226
.500..........281/240...........................290/236...............255/187?
.550..........283/246...........................301/242
.600..........285/252...........................304/248...............257/201
.650.............N/A................................301/253