The Edelbrock Victor JR. LS3 #28456 intake manifold is designed for Gen IV LS engines equipped with LS3, L92 and L76 cylinder heads, this manifold is for EFI racing applications operating between 3500-7500 rpm. The Edelbrock Victor JR. LS3 #28456 intake manifold comes with an MSD #6014 Timing Control Module. This manifold uses a standard squarebore throttle body flange that is compatible with both Edelbrock EFI intake elbows with single bore 90mm throttle body or four-barrel #4150 throttle bodies. The Edelbrock Victor JR. LS3 #28456 intake has additional bosses and machining that allow for the use of fuel injectors when combined with the #3638 fuel rail kit (sold separately). The LS3, L92 and L76 all use the same cylinder head.