Edelbrock Manifold Marine RPM Chevy Big Block Oval Port w/ Brass

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; with Brass Edelbrock part #76548 Flare to Pipe T fitting features a 4 AN - 4 AN - 1/8" NPT ends with red anodized finish. Use the AN size that matches your hose and the NPT (National Pipe Thread) size that matches the component you are plumbing. Chevrolet:Big-Block Mark IV:396 (6.6L)/402 (6.6L)/427 (7.0L)/454 (7.4L)/502 (8.2L)