To clarify, I never said anything about any improvements or otherwise with the blown marine builds.
I simply stated that the ones we do, don’t have the 4/7 swap, and reliability doesn’t seem to be an issue.

If I had the time & $$$ to test every "What if... ?" that came to mind, I would. Always questions, never enough conclusions.

As most folks here know, its all about the combination. A long time ago when the firing order swaps were new I saw Dick Maskin asked about it. This was close to the time when he built Pro Stock engines. He said when they originally went to it they did not see any power increase. However since they thought it made sense they stuck with it. He said later after they had continued to develop their Pro Stock program they found that if they went back to the stock firing order they lost horsepower. He could not explain it so I certainly won't try.

They've been riding motorcycles here for the last few days. Winter? What winter?

There are tons of things I’d love to have the time and resources to test.
That being said....... FO swap cams would be way way down on my list of things to play with.

If I did try it, it would be on something where I could get a pair of off the shelf cams for the test.
In other words.... BB or SB brand X.
Both cams for less $$$ than the price of the one BBM FO swap cam.
Plus you can sell one of them when you’re done.

Thank you for clarifying that. This would be a good example of why not to trust second hand info. : D

Would you share the top 5 things you would try first? And for fun how long is this list?

Well, for me the top......at least 20......would revolve around head swaps/shoot outs.

Ootb heads vs prepped heads vs ported heads...... brand A vs brand B vs brand C etc.

I think for the first go around it would be stuff for the hot street/street-strip SB stokers.

I’ve never really A-B’d anything on those....... and as part of that series of tests would be a pretty basic TF header combo targeting 600+hp.

I’d also love to do some testing of various ramp speed hyd roller cams, with a variety of different lifters and spring loads.

The length of the list keeps getting longer.
The more stuff you try, the more stuff you wanna try.

If I won the lotto....... I’d def build a really sweet dyno testing man cave where I could putter around with that stuff at my leisure.