Edelbrock part 7164 Performer RPM Q - Jet intake manifold is designed for street 396 - 502 c.i.d. Chevy V8's with large oval - port (1975 and earlier) heads. This intake manifold is designed works with spread - bore carbs, but also works with Edelbrock square - bore carbs without adapter. No provisions for hot air style chokes. Accepts divorced choke, late - model waterneck, air - conditioning, alternator and HEI equipment.