Hello,
I am contemplating putting a bravo x and 496 MAG HO into my boat. Need to know if the size is different. STBD side the starter is very close to a stringer, port side is pretty clear. Engine just clears the deck, and air filter just clears. Here are some pictures.

Both are the same size

thanks, any idea if the outdrive line up is very similar. I cannot shift the engine down at all for example. What about cut out for outdrive, will I need fiberglass work or is existing opening dimensions okay?

Tons of questions now.

Assuming that the HO delivers a bit more torque at ~3500-3600 cruise RPM would the fuel consumption be similar if not better? Maybe with the extra 50hp/more torque I can cruise at 3200-3400 instead?

I have a single engine setup, in a 30ft 11ft beam, 15 deg deadrise pilothouse (Penn Yan 305 Rampage). We tuna fish and it’s 11k boat with crew/ice/gear and I’m wondering if this may be a way to basically pick up 2 knots or so cruise speed and pretty much the same fuel consumption? Current numbers in good seas are 0.7mpg ish. Am I off here, educate me please…

The 496HO and the 496 Mag are externally IDENTICAL. Cam, programing, and a few different component changes over the years, are the only differences.

Same engines with different cam and pcm. IMO, not worth the $$ unless you need to replace a failed engine or drive. You will probably loose cruise speed going a Bravo X on your boat

Why is that, the drive ratio?

Are you going to put the B3 lower on it?….if not, that is why you’re going to loose speed in your application.