350 gear box

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airboatjosh
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350 gear box

Post by airboatjosh » Sat Sep 11, 2010 12:08 pm

I am building my first boat..14 ft Kennedy hull with a 350 and a 209-1 stinger box....what is the best prop I could have...I want to run dry ground for sure.please help and thank your :roll:

airboatjosh
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Re: 350 gear box

Post by airboatjosh » Sat Sep 11, 2010 12:45 pm

Thank you. I meant

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BigJakesrq
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Re: 350 gear box

Post by BigJakesrq » Sat Sep 11, 2010 12:59 pm

Is it a plain jane stock 350? I would have gone with a higher ratio no matter if you is a built or stock 350. I under stand if you came across a good deal on a used stinger though. Any way a little more info is needed about your motor so everyone figure out what prop would work best.

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Re: 350 gear box

Post by cntry141iq » Sat Sep 11, 2010 1:07 pm

whirlwind stump puller 2 blade may be an 80" if you got room for it
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Re: 350 gear box

Post by airboatjosh » Sat Sep 11, 2010 2:12 pm

Why would you go with a higher ratio?? Exactly what ratio?? Motor is not completely stock.not exactly sure what is done to it but not a lot...all of the pro airboat builders around here told me to use 209 stinger...

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Re: 350 gear box

Post by airboatjosh » Sat Sep 11, 2010 2:14 pm

The stinger is brand new. I'm not cutting any corners on this boat.that way I don't have to build another one..

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yobee
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Re: 350 gear box

Post by yobee » Sat Sep 11, 2010 2:27 pm

Did Dan recommend the 2.09? I am sure he would have recommended a higher ratio. A higher ratio will spin a bigger prop basically. With the 2.09 you will probably be stuck with a 2 blade or a short 3 blade. It will still perform really good. i had a 2-1 with a big wood prop and I was very happy with it... but I wanted more :twisted: I got a 2.38 and a 3 blade R now, testing should commence tonight, (im on a work break right now lol)
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JAMES
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Re: 350 gear box

Post by JAMES » Sat Sep 11, 2010 2:48 pm

airboatjosh wrote:Why would you go with a higher ratio?? Exactly what ratio?? Motor is not completely stock.not exactly sure what is done to it but not a lot...all of the pro airboat builders around here told me to use 209 stinger...
their is a reason airboat builders told u that right ???? what prop did they recommend??? go with what u was told ..in most cases they will point u in the right direction good luck
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BigJakesrq
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Re: 350 gear box

Post by BigJakesrq » Sat Sep 11, 2010 3:57 pm

To each there own. If you haven't bought the stinger yet talk to Dan. He is the the gear ratio/prop guru. My logic is that with a high gear ratio you can turn a wider/longer prop and with props like the R and S series that are designed to make trust at lower prop speeds this works great. Plus small blocks generally make better power higher a little higher in the power band, compared to a big block or a aircraft. With a high ratio you can get the motor higher in the RPM range to make power, while still spinning a large prop. Now I'm not trying to tell you to go out and buy a 2.88to1, but I think you would be happier with a 2.38 or a 2.68 with a 3 blade R. It all depends on your budget too. A 3 blade R might be to much for your motor depending on how long you go. Sound like it might have a cam in it and some maybe a intake manifold. 2 to 1 is better suited for a BB. JMO

I would find out how you motor is built and what kind of power its making before I bought a prop and gearbox. JMO

Do a search on SA and ask the guys that went from a 2.1 to 1 ratio to a higher ratio. Let the facts speak for themselves don't take my word for it. Gear ratio have been talked about over and over on SA, look for the information that is already here and easy to find.

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BigJakesrq
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Re: 350 gear box

Post by BigJakesrq » Sat Sep 11, 2010 4:02 pm

I've already said it, but I want to stress it, Give Dantheairboatman a call. He knows his stuff and also the main sales guy for stinger and sells props too. He's easy going and will listen to you and make sure you get the right setup.

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watersports7
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Re: 350 gear box

Post by watersports7 » Sat Sep 11, 2010 4:28 pm

we built this 12'x7' gileo last year,with a bone stock 88' sbc 350/2.37 rotator/80" 2 blade whirlwind whisper tip, the combination worked very well and would even run side by side with a strong 0540 on a 12' diamondback hull, you may end up being plenty pleased with your combination, depending on what your 'expectations' are. 8)



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red_neck191218
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Re: 350 gear box

Post by red_neck191218 » Sat Sep 11, 2010 6:16 pm

2.68 with a 78" 3 blade R you will have to take a lot of pitch out at first but that leaves you some wiggle room for possible engine mods later.

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Re: 350 gear box

Post by airboatjosh » Sat Sep 11, 2010 7:49 pm

Can someone please give Me dans number. And thanks to all...

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yobee
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Re: 350 gear box

Post by yobee » Sat Sep 11, 2010 7:50 pm

Dan the airboat man @ Stinger
352-206-5887
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Re: 350 gear box

Post by cntry141iq » Sat Sep 11, 2010 7:54 pm

They probably told you 2.09 because they had one in stock ... what prop were they selling you to go with it???
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Re: 350 gear box

Post by airboatjosh » Sat Sep 11, 2010 8:57 pm

Thanks for the number. They said a two blade but not sure on specifics of it

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skinny99
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Re: 350 gear box

Post by skinny99 » Sun Sep 12, 2010 2:27 pm

I also agree you would like a 2.68 better. However if you are gonna stay with 2.09 I think an 78"-80" R-Series would be the answer. I have that setup on my 13' Glass boat and it does run good. It will run a lot of dry(not all) and goes plenty fast. I also have a mild 355 SBC on my boat also.
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Re: 350 gear box

Post by airboatjosh » Sun Sep 12, 2010 5:08 pm

Well I talked to Dan...looks like I'm goin 2.38 softdrive...thanks everyone for helping me get on the right track.

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Re: 350 gear box

Post by BigJakesrq » Sun Sep 12, 2010 5:15 pm

Good deal.

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yobee
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Re: 350 gear box

Post by yobee » Sun Sep 12, 2010 5:33 pm

airboatjosh wrote:Well I talked to Dan...looks like I'm goin 2.38 softdrive...thanks everyone for helping me get on the right track.
I just did that. You will be happy.
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