VALVE TRAIN KITS FOR 450 GAS OR PROPANE HEADS. KIT INCLUDES INTAKE & EXHAUST VALVES, SPRINGS, RETAINERS, VALVE LOCKS & SEALS. YOU CHOOSE STOCK VALVE KIT FOR STOCK 281 cid ENGINE WITH PROPANE HEAD; OVERSIZE VALVE KITS FOR BIGGER CUBIC INCH MOTORS, EITHER 450 GAS OR PROPANE HEAD.
