Hi folks, just picked up 81 Excalibur...need help finding HP rating. I believe these came with 330 or 370 HP. Numbers, castings perhaps? I am not sure if original or not...thanks much, Mike

any pics of the boat??? where did you get it??? thanx chris

no pics yet....got it up in idaho

my guess would be 330, by the year and size of the boat... unless you say it runs 90 mph!!!!

Mine has a 330hp 454.
I beleave the easy way to tell between a 330hp or a 370hp is by the intake and valve covers.
The 330hp has a low rise intake and stamped steel valve covers, while the 370hp has a hi-rise intake and I think they have the cast alum valve covers. With that being said somebody could have changed the valve covers and intake thought. Sorry I cant help with casting numbers.
Erik