These brand new blue anodized distributor hold-down clamps are CNC-machined from 6061-T6 billet aluminum and include stainless steel mounting stud/bolt, nut & washer. Will fit just about any Small or Big Block Chevy 283 327 350 400 396 427 454 engine. Perfect for your off road, jeep, rock crawler, muscle car, street rod, dune buggy, or sand rail project.