You are looking at a Pontiac 7 blade clutch fan from a 72 Pontiac Grandville with 455 engine. It is # 9796134. The blades were made on G71 (Aug. 71). Clutch drive is stamped 4949706 a dated the 233rd day (Aug.) of 1971. The drive feels OK. This blade is correct for 69 to 73 Tempest Lemans GTO Firebird and full size with 400 or 455. The dia of the blade is 19 ½ inches. The pitch of the blades is 2 1/4. The blades are straight with no pitting. Overall a nice blade.