Stacks are 2 3/16, 4.04 bore 268ci. I did ask Don at hilborn about nozzle size and said #12's, the more i look at other sbc injectors the more i think your right with 16-18s on that size bore, unless Don was thinking 12s cause of the smaller injector size. It's basicly a sbc less 2 cyls. brodix -11 heads comp cam
[email protected] .650
[email protected] .632 106l/s. I''m only turning it to 6500 at the moment cause of the std cast crank, can't justify 3k for billet at this stage. I'll start with the pump and i might look at trying a set of nozzles.