topside-the cam is 271 advertsed with 242@.050. cam is bullet crb 271/271-12fc part # 303000.randys r&p calculator chart shows 3.54 2406rpm @65mph= 3.73 2535rpm@65mph= 4.10 2786rpm @65mph and 4.56 is 3099 rpm @65. car weighs 3710 with my 220 lbs of fa in it. thanks for all above info and anymore that comes later. will call my conv guy. again thanks