View Full Version : Engine type

06-28-2007, 01:07 AM
Kind of a newbie question here. I just bought my first Mastercraft (and inboard for that matter), a '97 Prostar 205, and I'm trying to figure out what the engine horsepower and type is or what it is refered to as. It's the 5.7L with TBI and says "Mastercraft Power" on the sides of the exhaust manifolds. I can't find a serial number on there anywhere.

I cant wait to ski behind this boat!!!

BTW- this board rocks! I've found a ton of information on here that has helped me learn about this boat.


06-28-2007, 08:40 AM
I'm pretty sure that in 97 the TBI GM 350 block was still rated at 275 hp.Don't think it was up to 310 hp(That would be a Corvette LT 1 MPI) in that era.

06-28-2007, 09:44 AM
The engine serial number is on a white sticker, on the oil pan. It's 275 HP. Assuming it's the original motor, you can call MC and by giving them the hull number, they can give you more info.

06-28-2007, 01:36 PM
Thanks, I appreciate the information!


east tx skier
06-28-2007, 02:09 PM
The 350 TBI was 275 hp in 97 and 308 hp in 98. 310 hp in 99.

06-28-2007, 03:34 PM
One other question. I need to get a spare prop. Is there a marked improvement anywhere with the ACME over the stock 3 blade prop?


east tx skier
06-28-2007, 03:40 PM
Yes, marked improvement. The OJ XMP would also be an improvement.

Prop Comparison (http://www.bhammonster.com/shoot-out.htm)

06-28-2007, 04:19 PM
I went to a three blade OJ XMP on my 1994 Prostar 205, and what a noticeable difference. OJ 13x11.5 XMP, the original was OJ 13x13.


06-28-2007, 04:33 PM
Thanks, I'll check them out. BTW East TX, I like the rollers on the prop guard; great idea!

east tx skier
06-28-2007, 05:11 PM
Thanks, I like 'em, too.