The K&N 66-3010 is a 14-inch X-Stream Air Flow Top that mounts over the top of a round air cleaner, using a washable cotton gauze element. The manufacturer says the top adds filter area and improves air flow. K&N states that the design redirects air inside the filter so more of it enters through the side pleats. The filter is cleanable and reusable, so you avoid replacing a disposable element. One owner reported excellent air flow and a strong look on a muscle car. Compare it against a plain round filter, which gives you no added filter surface.
The matching element is the E-1650, and the manufacturer's E-1650 page lists GM cars and trucks with V8 engines from 1966 to 1984. Confirm your application with the manufacturer before ordering. Key dimensions include a 5-1/8 inch neck flange, 4.625 inch overall height, and a 12 inch inside diameter. For installation, the manufacturer's sheets for sibling X-Stream tops call for a threaded stud through the carburetor base, and the nylock nut should bottom out the top with about 1/8 inch of preload. Keep at least 1-1/2 inches of clearance from the top of the choke horn. Long-tail searches: 14 inch round air cleaner top, X-Stream air flow top 5-1/8 neck, K&N E-1650 upgrade, GM V8 cold air filter top.
The manufacturer lists the E-1650 as the replacement filter for this top. The manufacturer's E-1650 page lists GM cars and trucks with V8 engines from 1966 to 1984, so check that your air cleaner matches before ordering.
Yes. The manufacturer describes the top as washable and reusable, and it publishes cleaning instructions for this part.
The manufacturer's specifications state that mounting hardware is included with the 66-3010.
Installation is a moderate DIY job that requires basic hand tools and careful setup. The manufacturer's sheet for a related X-Stream top calls for a 1/4-20 all-thread stud, which the buyer sources locally. Thread the stud into the carburetor until it bottoms out, then tighten the jam nut. Tighten the nylock nut until it is roughly 1-1/2 to 2 turns past contacting the flat washer. Set the preload so the top bottoms out without crushing it, since the top may be damaged if over-tightened. Before closing the hood, make sure no part of the top can rub against anything, because rubbing can cause irreparable damage. Skipping the manufacturer's procedures can void the top's warranty. If you run in dusty or off-road conditions, the manufacturer recommends a specially designed filter wrap to keep dirt from passing through the top.
