Designed for 1955-86 262-400 c.i.d. Chevy V8s for maximum power and a broad torque curve for high- performance street/marine. Provides power like a single-plane and throttle response like a dual-plane. Has provisions to add oil fill tube. No provisions for exhaust heated or stock-style choke. Accepts late- model waterneck, air-conditioning, alternator and H.E.I. Will fit cast iron Chevrolet Bowtie heads, but will not fit 1987 and later cast iron heads. Will not fit under stock Corvette hood. Available with standard finish or polished.