With a 540ci big block that makes 740hp on the dyno. Its my friend 21 foot jet, the boats straight up nasty. Its not as bad ass as his old boat which ws just a little guy at 19 foot but was clocked at 118 on the river. This boats alot more friendly though and mild mannered, The motors a 540 ci chevy truck motor he said with ported heads and a custom made intake thats baller. The carbs a 1050 thats massaged a bit.