Have a question it’s to late because I already made the choice and built the motors with this. But I’m reaching out to see what everyone things of this cam selection. So I did what I’d call a mild engine build on my at one time stock 330hb 454’s. I did a 750 carb. Edelbrock performer rpm air gap intakes. Exhaust and cams. My biggest question is am I going to run into future problems with my selections. If so what issues do I need to look for or what can I do to avoid these issues. Here’s the cam kit I ended up going with. I am running a wet exhaust as well. I will try to post a pic of the exhaust. As I also have a question that I’m sure someone could help me with on how to dump water further back instead of right up front. Very new to the marine performance game appreciate all the help and possible step by step solutions.

This is a link to the cam kit I bought.
http://www.jegs.com/i/COMP-Cams/249/K11-236-4/10002/-1

I'm not an engine builder, but it looks pretty mild to me compared to what I've run without any problems.

You should be fine. The risers have a tall bend, so reversion should not be a problem

Those are double walled risers. The water doesn't enter until after the bend going down and ust a few " before the 4" rubber hooks up.

I'm running Merc 496 Aluminum exhaust with a 288/294, Lift .585/.610, 112 L/S cam. No issues.

Isn't it strange I was running a cam close to your duration's but less lift and I had reversion using the stock 496 risers lol. Nice healthy cam how is that working?

If one is measured at .004" and another at .006" you can't compare seat duration easily.

Edit: Also, I see f_inscreenname pic above has S pipes. These help stave off exhaust water reversion also.