The CID Heads BE 4.5 LS3 intake manifold is designed for engine applications aiming to make 750+HP using LS3 cylinder heads with a single plane intake. The 4.5" intake is also suited where port openings at the cylinder head will have more than 3" CSA, allowing for the taper percentage to be kept at a desired amount. 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. It features a square carb pad designed to suit a 4500 Dominator carburetor or throttle body.
*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 and matching the sides works best. Enlarging the port opening height at the flange will reduce taper in the runner and can harm performance.*
Fuel injected version. Comes with fuel rails and CNC fuel rail stands
The BE LS3 intake manifold is designed for 750+ HP street, race and marine applications.
Near equal length runners that are 4.5" 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 9.75" deck block
Made in USA
Made to order and a "Final Sale"
Comes with fuel rails and CNC fuel rail stands
Suits EV1 Long Fuel Injectors
4.5" CSA at plenum end of runner
9.75" deck height
4500 Carburetor bolt spacing and opening
9 1/2" tall. Can be milled down to 9".
WHAT'S IN THE BOX
One CID Heads 4500 BE 4.5 LS3 Intake Manifold. Comes with fuel rails and CNC fuel rail stands