a year and a half ago when i did my rebuild on my 302 i ported and polished me e7s and decided to put a cam in it as well. the motor lasted 1000 miles. so i have this f cam with only 1000 miles on it. I think it is way to small for the motor that i am building now. but i thought id ask on everyones opinion. I dont want to spend the money to go custom. trying to get the car finished before the baby comes as is. 351w roller cams are expensive as is! thankfully i found a roller block as it was.