waterthunder broad stick/ big stick specs?

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spencer321
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waterthunder broad stick/ big stick specs?

Post by spencer321 »

Anyone know the specs on waterthunders cams? Thinking about putting together a mild l33 5.3 ls motor. 799s stage one cnc'd by ai, milled to 11.5:1, stock truck intake, long tubes, shooting for 440/440 under 6000rpm, considering hot rod did 411/406 under 6000 with a 210/218 cam on a bone stock 9.5:1, I don't think my goal is unreasonable, but I'm curious about these airboat specific lsx cam grinds

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Re: waterthunder broad stick/ big stick specs?

Post by Whitebear »

I can assure Dave does. Why not PM him here? Dave IS Waterthunder BTW. He is easy to talk with.
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Re: waterthunder broad stick/ big stick specs?

Post by getchasumairboats »

I am sure he won't have a problem giving you all of his cam combo information. Is that all you needed in your first post ? Lololol
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Re: waterthunder broad stick/ big stick specs?

Post by clamped »

Maybe someone one is pumping for info

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Re: waterthunder broad stick/ big stick specs?

Post by Afflicted »

clamped wrote:Maybe someone one is pumping for info
Where's the popcorn? Or did u kill the the thread haha? :stirpot:

spencer321
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Re: waterthunder broad stick/ big stick specs?

Post by spencer321 »

just curious how his cam grinds differ for low/mid range performance, 80% of aftermarket cams sacrifice low end to get an extra 50hp at 6800rpm, a place where 50 extra horses does me zero good in an airboat application

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Re: waterthunder broad stick/ big stick specs?

Post by spencer321 »

Even the so called truck cams push rpm into an unusable area, or have such aggressive lobes they'll wear out springs every 15000 miles, I'm not sure what that equates to in engine hours, but I don't want to have to replace valve springs every 12 months

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Re: waterthunder broad stick/ big stick specs?

Post by T-REX »

Just buy the cam from Dave.
And a set of stainless long tubes while your there....

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John C
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Re: waterthunder broad stick/ big stick specs?

Post by John C »

:thumbup: Good answer

spencer321
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Re: waterthunder broad stick/ big stick specs?

Post by spencer321 »

I had already planned to run his headers, I couldn't find anyone else who makes long tube that exit correctly for an airboat application. I have a feeling his broad stick would make for a nice cam in a 5.3, considering he deals 90% in ls3 or bigger, the big stick is probably overkill for a 325 ci motor

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Re: waterthunder broad stick/ big stick specs?

Post by nomad41 »

I run one of his cams in my sbc stroker. I love it. Woke my engine right up.
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Re: waterthunder broad stick/ big stick specs?

Post by Waterthunder »

I think you already called and I responded. Are you the person with the 2to1 gearbox? If you put a broad stick in a 5.3 it would run terrible. A 5.3 is only 327 cubic inches it needs a 2.68 ratio and a smaller cam.
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spencer321
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Re: waterthunder broad stick/ big stick specs?

Post by spencer321 »

Not me, I don't have the motor yet, I'm in my planning stage. I was actually going to ask if anyone was running the 2.9 ox on a smaller v8, I would think a 2:1 on a 5.3 would never make it close to an optimal efficient rpm range, the 5.3s like to rev which is why I was considering going with 2.9 over 2.68.

That aside though, what kind of operating range would a broad stick give in a 5.3? Or am I better off going custom grind

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Re: waterthunder broad stick/ big stick specs?

Post by T-REX »

AI ( Phil?) Is a very reputable source. AS IS waterthunder...
But Dave specializes in airboats.. ... Buy whatever you can from Dave-ESP. cam kit and exhaust since they are most specific to our application.
What does ai get for a set of Cnc 799's ? Or 243's?

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Tony480
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Re: waterthunder broad stick/ big stick specs?

Post by Tony480 »

What is ai?

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Re: waterthunder broad stick/ big stick specs?

Post by T-REX »

Advanced Induction

spencer321
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Re: waterthunder broad stick/ big stick specs?

Post by spencer321 »


spencer321
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Re: waterthunder broad stick/ big stick specs?

Post by spencer321 »

T-REX wrote:AI ( Phil?) Is a very reputable source. AS IS waterthunder...
But Dave specializes in airboats.. ... Buy whatever you can from Dave-ESP. cam kit and exhaust since they are most specific to our application.
What does ai get for a set of Cnc 799's ? Or 243's?
I'm thinking about going with his 218cc package and lunati gold springs and probably btr trunion upgrade, so I'm looking at approx 1200 total give or take

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Re: waterthunder broad stick/ big stick specs?

Post by odcjohn »

spencer321 i wouldn't waste your money on a set of cnc heads the numbers your looking for are not hard to hit with stock 243 heads and a cam id spend the money on boring that 5.3l to 5.7l no replacement for displacement and as far as a cam id go with a xr273hr grind should put you right in the numbers hp/tq you want at 11.5:1

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Re: waterthunder broad stick/ big stick specs?

Post by spencer321 »

While I don't disagree, cnc heads maybe overkill, by the time I pay the machine shop to bore and hone, get slugs from an ls1 and then have the new rotating assembly balanced, the cost for such would be greater than the difference in buying a 6.0 vs a 5.3 and I might as well start with a 6.0, which I'm considering. I found a lq4 turn key for 1000, best turn key 5.3 I've found turn key was 650.

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odcjohn
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Re: waterthunder broad stick/ big stick specs?

Post by odcjohn »

6.0l with ls1 heads to get compression up would do great was thinking you already had a 5.3l

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Re: waterthunder broad stick/ big stick specs?

Post by One Eyed Gator »

You going EFI or Carbed?

spencer321
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Re: waterthunder broad stick/ big stick specs?

Post by spencer321 »

Nope no motor yet, I'm in the process of moving into a new house so I'm at least a month out from purchasing. I'll most likely stay efi, the truck intake, though big and bulky is great for low end torque, by the time I purchased the carb/intake/msd box, I could afford the hp tuner software.

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