Chrome RAM Horn Exhaust Manifold Fits 1955-up SB Chevy 283-350 V8 Ideal for Racing Applications Chrome plated Heavy Duty Cast Iron This manifold will give you looks and performance never before available in cast iron. Provides a tight-fit for steering and clearance issues and flows better than original Corvette manifolds. Manifold gives the same performance as tube headers with classic ram horn styling. 2-1/2 collector uses standard reducers or tight tube extensions. Includes gaskets and bolts shown in the picture. Note: The port size is square and large enough for most round port heads. It measures about 1-1/4 and should be sufficient for most small block cylinder heads. Will clear most straight and angle plug heads. Will not work with GM "fastburn" heads. These fit great in a variety of street rod and vintage truck applications (particularly those with Mustang II-type suspensions). Powered by SixBit's eCommerce Solution. 265 283 305 327 350 383 400. The item "Small Block Chevy SBC 283-350 V8 Ram Horn Chrome Exhaust Manifold Headers 55up" is in sale since Tuesday, April 14, 2020. This item is in the category "Vehicle Parts & Accessories\Car & Truck Parts\Exhausts\Manifolds & Headers". The seller is "motornets" and is located in Walnut, California. This item can be shipped worldwide.