I am building a 1964 427 Ford Stroked to 496 this weekend. I have a set of Comp roller lifters, but was sent the wrong cam, its a flat tappet cam. Like most parts for these old BB Fords every thing is hard to find or special order. I am going to Havasu for 10 days in two weeks, no time to re order cam. I am running roller tip rockers also.
What am I losing by not running the roller lifters other then wear?