Intake Manifold - Hi-Perf Victor JR Edelbrock Performance

Designed for Gen IV LS engines equipped w/ LS3, L92 & L76 cylinder heads, this manifold is for EFI or carbureted racing applications operating between 3500-7500 rpm. This manifold uses a standard square-bore carb flange that is compatible w/ both Edelbrock EFI intake elbows & single bore 90 mm throttle body or four-barrel #4150 throttle bodies. EFI manifold #28455 has additional bosses & machining that allow for the use of fuel injectors when combined w/ the #3638 fuel rail kit (sold separately. The LS3, L92 & L76 all use the same cylinder head. L92 heads are only compatible w/ a 4.00 in. & larger bore diameters. Smaller bores (including most 5.7L blocks) will require valve reliefs cut into the block. Throttle body recommendations: Edelbrock #38783. Installation notes: uses LS3/L76/L92 style individual port O-ring seals GM pn19256623, L92 heads are intended for 4.00 in. bores & will not work w/ 5.7L blocks w/o valve reliefs. Manifold dimensions: r-1.85 in., f-0.57 in., h-2.42 in., ch-7.40 in., ca-0 Deg. Carb height (ch) for this manifold is measured from the valley cover flange to the carb pad.