Description

Features; Designed & calibrated for optimum street performance in small-block & big-block engines with ?Performer RPM? manifolds or similar. Also for larger capacity engines with ?Performer? manifold. Includes both timed & vacuum ports, MANUAL CHOKE, single inlet fuel supply, metering jets- primary- .113?, secondary .107?, metering rods- .071? x .047?, step up spring- orange 5? hg. Rebuild kit BY1477. Tuning kit BY1480. BY1407 750cfm manual choke square bore