LSX Based on 6.0

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keebo
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LSX Based on 6.0

Post by keebo » Mon Aug 12, 2019 12:10 pm

I recently went to automotive, always ran aircraft before. It has a 6.0 iron block, 243 heads, 10:1 diamond pistons,BTR stage 4 cam kit
224/230 -553/547, BTR springs, VVT delete kit and an MSD LS6 black box, N/A with 750 quick fuel carb. I do not know the HP, if I were to guess i would say 450-500???

It currently has a 2.09 reduction on it and the prop is an 80" 3 blade whirlwind 2.0. Prop is set about an 1/8 inch past the last setting and spins 5450 WOT. 2600+- prop RPM, To my thinking it is currently under propped with the current box.

It sits on a 13 x 7-6 Lazer hull, it runs great and does good but my question is can it benefit from a box change to a higher ratio to swing a wider prop like a superwide.

Appreciate any input
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One Eyed Gator
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Re: LSX Based on 6.0

Post by One Eyed Gator » Tue Aug 13, 2019 1:35 pm

I run a 6.0 with a similar cam (more duration slightly less lift) and a little more compression. I have a 2.68 box and turn a 79.5 3 bld R 5400 set on mark 3. I have never run a whirlwind blade so not sure how they compare.

I did set up a stock 6.0 with a 2.55 ratio 80' 3 bld and it runs great as well.

If you have room in your cage maybe try a longer hub. I also believe that the new Sensenich blade fit in the whirlwind hub. Longer hub is cheaper than a new gearbox.

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keebo
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Re: LSX Based on 6.0

Post by keebo » Wed Aug 14, 2019 6:23 am

10-4 Thank you, I can fit an 82 in the cage. Since the 2.0 prop is a 12" wide blade and is made to spin 2600 which is what the 2.09 box needs, I thought about adding a blade to bring the pitch setting down but think it will be too much. While it does do good; I'm just wondering if Im leaving performance on the table being pitched past the last mark. I'll run it like it is for a bit and get used to the boat, the difference from A/C is amazing. Wonder what took me so long to do it, LOL

Thanks again for the input, much appreciated
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One Eyed Gator
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Re: LSX Based on 6.0

Post by One Eyed Gator » Wed Aug 14, 2019 7:19 am

Call Whirlwind and see what they say always heard they have great custom service.

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keebo
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Re: LSX Based on 6.0

Post by keebo » Wed Aug 14, 2019 8:48 am

Thanks again, much appreciated
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kwanjangnihm
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Re: LSX Based on 6.0

Post by kwanjangnihm » Wed Aug 14, 2019 8:53 am

keebo wrote: I recently went to automotive, always ran aircraft before
say it aint so keebo! :(
" I don't care who you are back in the world, you give away our position one more time, I'll bleed ya, real quiet. Leave ya here. Got that? "

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keebo
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Re: LSX Based on 6.0

Post by keebo » Wed Aug 14, 2019 11:29 am

LOL, Kwan I had to give them LS motors a try. Ive had quite a few aircraft and the last 540 was a really nice boat, but the allure of pump gas, readily available cheap parts and excessive power made me slip on over to the dark side LMAO :stirpot:

They all get stuck, now I can just get stuck further away then I used too :shock: But after 30 years of A/C I got to give it a try :D
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