I owned a 98 year model 35 Lightning equipped as follows;

525 SC's
Stelling Extension Boxes
Shorty Drives with 1:50 gears
33 X 15.5 Spinelli props
I had a high X-dimension from the factory and I would push 90 MPH

I blew an engine and bought a pair of 600 SC's from Cobra, with the same setup I obtained approximately 5 MPH over the 525 SC's.

I ran the hell out of the boat and finally sold it to a person in Canada.

Fountaindriver

there has to be someone out there who has before & after results going from stock height to -2 shorties??? 95-99 model 35 ?? I need to borrow a set to try - (so I can save all winter to but a pair )

I may have a line a set of sportmaster -2 lowers to try out next week - so I guess I'll be the guinea pig - I post results - I keep hearing imco's are way to go?? I'm hoping to gain a few MPH with the raised prop height.

You should. I think Fountain raised the x-dim way
up on the new Executioners,thats how the get the
speed with only 496's. You pay for It in the mid
range though.

have a set of -2 sportmasters to try out on my '99 35 - weather pending I should have some results by the weekend.

last weekend we had the fountain out . the weather was sunny water is getting cold and the air temp was a little chilly and the lake had a nice little chop. This boat ran 88mph on gps and all summer 80. took it out last night and got 84.3, so the boat will run the speeds that it calulates but everything must be purfect. I would like to see the 88 in mid summer, maybe try spinning a smaller prop next year.

must have been nice to see speeds approaching 90 - unfortunately conditions are usually less than favorable during the season. Nice to know what it's capable of nonetheless.