http://i91.photobucket.com/albums/k3...2/IMG_0357.jpg
this hustler runs 99

What power? that's about the limit for our Slingshots, looks good though

over 700hp each wesseldyke built. 30p bravo 1 it could go faster. he just hasent got around to getting new props yet. that slingshot rocks.... im the only one besides the owner to ever pilot it. I am so sorry eichhoma to take from your thread. pm me neversatisfied for more info.. that hustler went 99 on the missisippi and it can do way more. smooth as hell

It would probably add some HP up top then. I would talk to rmbuilder about a proven package. He can get you the best cam and heads to make the best package and most HP.

Are you going to have the ecm's tuned on a dyno????
If not, you may want to also consider calling Mark at Precision Marine. I have read very good things about about his ecm calibrating and engine builds. He probably has done something with exactly what you want to do and has an ecm program that will work the first time. From what I have read, the stock upper intake on the 500EFI is the biggest problem to overcome.

Griff
Thanks for the reply, I appreciate your info and enjoy reading your posts

Steve

I'm looking for info on a MHP-300. Sounds like it is a Crane also. Does anyone know any info on this one?

I'm guessing the MHP stands for Mercury High Performance.

Another guess would be that the 300 is from a 500 HP carbed engine. Just guessing though.