DOH! Found it!
Manufacturer Model: CFM @ 1.5” Hg; CFM @ 3.0” Hg; Throttle Bore, in. (mm); Venturi Diameter, in. (mm)
Rochester
M Monojet: 113; 160; 1 7/16 (36); 1 7/32 (31)
M Monojet: 148; 210; 1 11/16 (42); 1 5/16 (33)
M Monojet: 177; 250; 1 11/16 (42); 1 ½ (38)
2GC: 197; 278; 1 7/16 (36); 1 3/32 (28)
2GC: 246; 352; 1 11/16 (42); 1 3/16 (30)
2GC: 269; 381; 1 11/16 (42); 1 ¼ (32)
2GC: 299; 423; 1 11/16 (42); 1 5/16 (33)
2GC: 308; 435; 1 11/16 (42); 1 3/8 (35)