19131359 High-Rise Intake Manifold-Rectangular-Port, square bore, Holley Carburetors

• Aluminum, dual-plane manifold can be used with high-performance cast-iron or aluminum retangular port heads
• Same as used on the 454 HO and 502 HO engine assemblies

Note: Ports do not match Bowtie cylinder heads PN 12363425.

Aluminum, dual plane intake with rectangle ports. Square bore carb. flange only.will not work with Chevrolet Performance 14044861,14044862,10051128,10051129 heads. Fits all other big block chevy iron and aluminum rectangle port heads.

Note: Open carburetor spacer is not recommended with use of dual-plane manifolds