I agree its best to move one battery and see what it gets you.

What year is the boat? Pictures?

here you go, all you need... http://www.offshoreonly.com/forums/s...tabs-pump.html

Thanks again guys... I have a set of tabs coming from a member on here.... I know that there are threads for placement on here.. But who wants to show off there transom(to go along with phragles).?

The boat is a 95... It needs some cleaning up.. But I am working away at it.
http://i39.tinypic.com/vzdhex.jpg
http://i44.tinypic.com/2eme8mp.jpg
http://i42.tinypic.com/2ed8f43.jpg

okay... I got a set of tabs. A couple more questions... How many people have been with / or without tabs and saw a noticeable loss in top end? I was going to mount them parallel and and inch up, as close to the outside as possible. Is there a better way to mount them in order to not lose speeds. I know the debate is huge on parallel vs. horizontal. Has anybody mounted at 20 - 22 degrees? I'm trying to educate myself as much as possible.

I had my plates off the boat because I was getting the rams rebuilt and my boat ran 85mph . Put them back on and only run 82. I thought theres no way I scrubbed 3mph with just the tabs being on the back so I took them back off and hit 85 again . They were mounted 1" from the bottom at 24* and obviously to low and dragging . All the Y2K's have been rigged at 20* with no testing at parallel to the water . so I would say your safe at at 20* .. When my 24/7 hits the water again they will be mounted parallel .

Wow.... that's interesting. I am leaning towards 20 - 22.... Have we seen this done? I would love to see some transom shots.

Here's a shot of a 24 Super transom with tabs, showing the proper placement. They should be 1/4" off or up from the bottom of the hull. Maybe Johnny Lightspeed will chine in. He's done hundreds of them, and this is how he would do them. This picture is for an IO. On a outboard hull, put the tabs a little further out to the chine, but not past it. Important. When mounting the piston height. Make sure the tab is above the bottom around 1 1/2"- 2" when fully retracted. Y2k's have had Tabs in every conceivable position. Including Parallel with the bottom, as seen on Don Goodwins Reinforcer. SuperBash, who has the Fastest single 24 outboard, and runs his tabs Parallel with the bottom also. Superbabi's tabs were slightly up as you can see in his thread. http://www.offshoreonly.com/forums/s...ur-y2k-26.html. The two property's here are when you put the Tabs Parallel with the bottom, they are in turn being an extension of the hull. When you put them up, they act more like brakes, driving the bow down.
http://i132.photobucket.com/albums/q...t/DSCN0009.jpg
http://i132.photobucket.com/albums/q.../IMG_04191.jpg
http://i132.photobucket.com/albums/q...irborn_top.jpg

Great info... Thankyou, Interestingly enough... Lightspeed owned this boat for awhile.

Here's a few of my pics. The 24 I owned had 280's mounted parallel to the hull. Boat ran 78 w/496HO. The other pic is my 30. The 380's are mounted not quite paralled with the water, but not parallel with the hull either. Mine look to be mounted in the same place as Superbabi's. I think they where only two boats apart in production.

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Your 24 is a mirror image to how I have started doing it. Its a bigger job than I expected.. lol.