[b-man]

The 2801 has too much duration for a 350 that’s lucky to have 7.6:1 compression, it likely has less.

I had a 1976 400 with a 068 cam, it was in a 1976 T/A equipped with the original 6S-8 heads which were the AIR version of the 6X-8.

It was okay but really lackluster in performance, that 7:6:1 400 just didn’t have enough compression to be happy with that cam. I used it because I was strapped for cash and already had it on the shelf, thinking back the 066 cam that the factory originally used in that engine would have performed much better.

If you’re set on running the 2801 I’d advise cutting the heads for compression or better yet swap them for a set of ‘68 -‘70 350 heads after converting to screw in studs. It’s going to be hard to cut those 6X-4 heads enough to raise your compression by on point.

Good valve springs are great for controlling the valves and should be part of most any cam swap but when you put the wrong cam in your engine they won’t help resolve that.

The 2800 is a far better fit for your engine as it sits.