Parts

Plenum Tops, BB Chevy

Plenum Adaptor, Lower Half

Cast 356 T-6 Aluminum
Bolts directly to BB-AH Tunnel Ram casting (and also WEIAND BB Chevy 5980 & 5983, SB Chevy 2983, BB Ford 1993 & 5993, SB Ford 1994, Chrysler 426 Hemi 5991, Chrysler SB 1995 manifolds)
Full-radiused entries for all runner openings
Increased plenum area for even fuel/air distribution
Mates to BB-AH Plenum Tops (see below)

Plenum Top, GMC 6-71 opening pattern

Closes the Plenum Adaptor Lower Half casting
Accepts most fuel injector “Hats” (Enderle, Hilborn, Crower, Scott, etc.) with GMC 6-71 blower style opening, or turbocharger inlet
Accepts all Nick Arias Jr. billet “Intake Adaptors”: Click Here For Listing
Cast 356-T6 aluminum
Kit includes fasteners

Plenum Top, Dual Holley 4500 / EFI

Closes the Plenum Adaptor Lower Half casting
Cast 356-T6 aluminum
Kit includes fasteners

Plenum Top, Single Holley 4500 / EFI

Closes the Plenum Adaptor Lower Half casting
Cast 356-T6 aluminum
Kit includes fasteners