Description

Features; Designed for 402cu in & larger engines with ?Performer? manifolds or similar. Not to be used with Performer RPM style manifolds. 2% leaner than BY1407. Good fuel economy on 454 BBC, & 460 BBF with Performer style manifold. Includes both timed & vacuum ports, ELECTRIC CHOKE, single inlet fuel supply, metering jets- primary- .110?, secondary .107?, metering rods- .075? x .047?, step up spring- orange 5? hg. Rebuild kit BY1477. Tuning kit BY1489. BY1411 750cfm electric choke square bore