The CID Heads BE 4.0 LS3 intake manifold is designed for engine applications aiming to make 600+HP using LS3 cylinder heads with a single plane intake. The CID Heads BE LS3 intake manifold has an overall height of 9.5" and unmatched HP producing characteristics amongst all cast single plane manifolds.
This version features the same 4500 square carb pad opening as the 4500 version, with 4150 Holley carburetor bolt spacing, and is designed for classes that must retain 4150 bolt spacing.
*The roof of the LS3 manifold is designed to line up with the roof of a LS3 cylinder head. The port opening on the manifold is not as tall as a factory LS3 port. Testing has shown that leaving the opening on the manifold at its cast height works best. Enlarging the port opening by dropping the floor at the flange to match a LS3 port will reduce taper in the runner and can harm performance.*
Fuel injected version. Comes with - 12 fuel rails and mounting hardware.
STD injector location is the lower cast bungs while CNC fuel rail brackets are in stock. Upper fuel injector location can be selected as an option.
The BE LS3 intake manifold is designed for 600+ HP street, race and marine applications.
Near equal length runners that are 4" in area at the plenum opening with enough material to increase area to 5.5" at plenum
Designed to fit modified GM LS3 port openings
Intake Manifold suits a 9.24" deck block
Made in Ohio USA
Made to order and a "Final Sale"
Comes with - 12 fuel rails and mounting hardware.
Suits LS1 Long Fuel Injectors
4.0" CSA at plenum end of runner
9.24"" deck height
4150 Carburetor bolt spacing - 4500 Opening
9 1/2" tall. Can be milled down to 9".
WHAT'S IN THE BOX
One CID Heads 4150 BE 4.0 LS3 Intake Manifold. Comes with fuel rails and mounting hardware.