Intake Spacer Kit - BBC w/Large Rect. Ports

The Intake Spacer Kit - BBC w/Large Rect. Ports from B and B PERFORMANCE PRODUCTS is a precision aluminum manifold spacer engineered for big block Chevy engines running aftermarket cylinder heads with tall deck configurations. This intake spacer kit exists to optimize the plenum volume and fuel distribution between the intake manifold and cylinder head, critical for maintaining correct air-fuel ratios and peak engine performance across the RPM band. Whether you're building a high-performance street engine or a race-oriented power plant, proper spacer selection ensures your fuel delivery matches your head and manifold combination.

Constructed from premium-grade aluminum, the Intake Spacer Kit - BBC w/Large Rect. Ports delivers consistent thermal and volumetric characteristics essential for tuning stability. The large rectangular port design accommodates big block Chevy port geometries without flow restriction, allowing the manifold gasket surfaces to seal properly while maintaining precise spacing that prevents air and fuel distribution anomalies. At 4.32 lbs, this spacer adds minimal weight while providing the structural integrity needed to withstand manifold clamp pressure and thermal cycling from sustained engine operation. The compact profile (6.2 x 1.25 x 23.9 inches) ensures fitment in tight engine bays without compromising cooling system routing or accessory placement.

This kit serves builders and tuners working with tall-deck big block Chevy platforms, including 632 cubic inch builds and modern performance engines requiring precise head-to-manifold spacing. Installation requires removal of the intake manifold, careful cleaning of gasket surfaces, and proper torque sequencing to ensure even pressure distribution across the spacer face. Compatibility is confirmed for aftermarket cylinder heads and non-OEM manifold combinations where factory spacers or gasket stacks fail to maintain correct plenum volume. For serious engine builders seeking reliable, dimensionally accurate spacer solutions, this B and B PERFORMANCE PRODUCTS offering delivers measurable improvements in carburetor or EFI tuning response.