for street use the street hp uses the contoured main body from the 4150 hp and adds a ... air bleeds two corner idle system ford kick-down and down-leg boosters ... float bowl · universal throttle lever · ford a/t kickdown · power valve blow-out ... parts · without automatic overdrive transmission · non-emission description 350 cfm 2bbl ... with 30cc accelerator pump 500 cfm 2bbl with 50cc accelerator pump ... 500 cfm 2bbl with 50cc accelerator pump shiny finish ideal for street ... finish 750 cfm 4bbl universal with ford a/t kickdown lever including chrome ... vehicles street gearing automatic transmission engines built more for low-end torque ... 4.11 or numerically higher manual transmission engines built more for top-end ...