Designed for spread-bore carbs but also works with Edelbrock square-bore carbs without adapter on street 396-502 c.i.d. Chevy V8's with large oval-port (1975 and earlier) heads. No provisions for hot air style chokes. Accepts divorced choke, late-model waterneck, air-conditioning, alternator and HEI equipment.
Edelbrock Manifold Marine RPM Chevy Big Block Oval Port w/ Brass