Been looking at other boats to start another project for my simon 3.0 liter but nothing compares to my allison wether it's build quality, ride, or handling. So I gonna try to save up some more cash for a GS. How do these run with a 3.0 on them? any replies are appreciated. Thanks Max!!!
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- Thread starter max200
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whipper
Well-Known Member
I'm sure some will replie soon there is a thread on this also. They handle great. Ive looked into this also alot. I think because they are 950lbs they handle weight better than some. Theres even one with a 300Promax on it that ran 105 with 5 in the GS.
I think the key is less setback to offset the extra weight. If you can adapt a ratcheting gear case thats always a good idea also. The 3.0lt don't have this so you have to let off slower until your off the lip and pad or the bow may drop to fast lifting the stern when your already elevated. Ya know what dat does.
Other than this I think it would be a great motor for a GS. You can also add some floatation in the setback every little bit helps. I even do it with my 365lb motor. With less setback and floatation you wont feel like your always running with a full tank of gas. I thought a good thing to do would be to move the GS gas tank forward 5 inches further? The set back for a 250 or 300 XS would be in the 4-6 range. So by moveing the gas tank away from the transome a bit you can theoreticly have the same balance or Fulcrum point as a 2.5 with the standard 11-12 inches of setback. One day I want to try to set up a 300 on mine. The reason is then when the 23ft GS hits the market I just need the hull.
Go for it. If you can hang a 300XS on a Venom I cant see why not on a Grand Sport.
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Thanks Whipper! a lot of good info there And it all makes good sense I was unaware of the gearcase not ractheting since I don't have a case yet. thats got to get interesting if the motor ever locks up. The motor I have puts out 335 hp according to simon so it should be a beast. I read on a thread here or S&F that a GS gets weird over 105 Not sure if that is B.S. or not.
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whipper
Well-Known Member
ive never been there personaly but Ive heard thart from those who have been there like Todd, Skydog,Ziemer,Baker,ect.. Hears a pic of the 300 GS I always like looking at this boat!! The two guys in the GS are both over 240lbs and with the 300PM on there the GS doesnt look any lower in the water than mine with a 225PM. Whan ya think about it other than the fact the weight is hanging off the transon its like haveing 12 more gallons of gas on board? So half a tank feels like your running a full tank.
whipper
Well-Known Member
I found this thread you might want to read. It sorta aplys to XS setup also because the motors weigh the same as the 300pM and there boath touque monsters. Gregs HP is the same as yours also. 330ish worked by simon. Link http://forum.allisonowners.com/showthread.php?t=3342&highlight=grandsport
That boat looks awesome with the 300 hanging on the back! can't wait to get a hold of a GS. I love my xb but the gs is my favorite allison good to see it can run with 3.0 power. gonna have to find a fixer upper don't have a lot of spare cash these days. my girl loves to fish so I have to keep the xb. "how often do you here that" Thanks for all the great info Whipper! and taking the time. Max!