Feature●FITS small block Chevy engines with 1.5” round ports such as 283, 305, 307, 327, 350, 383 (stroker), 400, and others based on the popular platform●ENGINEERED WITH A LAYERED DESIGN that completely conforms to any surface imperfections for a fully leak-proof seal●VIRTUALLY BLOWOUT AND BURNOUT-PROOF making them ideal for race, street, tow vehicles and motor homes●EASY-TO-REMOVE 2-piece sets are reusable●WILL NOT shrink or deteriorateDescription Aluminum Exhaust Manifold GasketsSmall Block Chevy1.5" Round PortsReusable2/pkg