Features: Auxiliary Venturi:7.3mm Venturi(Choke tube):28mm Main jet:185 Air correction jets:110 Idle jet:120 Needle valve:3.3 Fitment: For Chevy big block Mark IV 6.6L/402 1970-1972 V8 For Chevy small block Gen I 5.7L/350 1967-1973 V8 For Chevy big block Mark IV 6.5L/396 Street 1966-1970 V8 For Chevy small block Gen I 5.4L/327 Street 1966-1969 V8 For Chevy big block Mark IV 7.0L/427 Street 1966-1969 V8 For Chevy big block Mark IV 7.4L/454 1970-1973 V8 For Chevy small block Gen I 6.6L/400 1970-1973 V8 For Chevy small block Gen I 5.4L/327 GMC 1967-1968 V8 For Chevy big block Mark IV 6.5L/396 GMC 1968-1969 V8 .
