12366573 — Manifold, Vortec Head Design

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  • Manifold, Vortec Head Design 12366573

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Item #: 12366573
Reg. Price: $478.03
Our Price: $454.13


This dual-plane was designed for 283-400 ci small-block Chevrolet engines using the new vortec cylinder heads P/N 12464298 (bare) or 12558060 (complete). This high rise manifold was designed for maximum horsepower and a broad torque curve to give you great performance. This manifold accepts square bore (Holley design) carburetor and includes externally plumbed hot water crossover passage. Technical Notes: Vortec heads were released on 1996 RPO L31 truck engines. This manifold only has four bolts attaching it to the cylinder head instead of six like all earlier models. Check for proper to carburetor clearance, especially on Corvettes. Use manifold gasket P/N 89017465 gasket kit and (8) attachment bolts P/N 12550027.
Note: # 12366573 intake is 5 3/8" tall from top of block to the highest part of manifold.

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