Most reasonable crate SBC?

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atvracer16
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Most reasonable crate SBC?

Post by atvracer16 » Wed May 06, 2015 12:47 pm

Who sells the best bang for the buck SBC's for the airboats? Looking to be in the $5-6k range. Thanks.
13' Aluminum w/ SBC 350 (440hp), 2.38 Stinger Soft Drive, & 2 Blade 76" R Series

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Brotherbob
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Re: Most reasonable crate SBC?

Post by Brotherbob » Wed May 06, 2015 1:02 pm

http://www.summitracing.com/parts/nal-1 ... oC4Zbw_wcB

The new ZZ5 is a simple SBC crate engine in my opinion.
BRAB41,TAA-220 ,Air Ranger 15x8 , SBC , 78 " 3 blade WW prop, 2.88 Stinger
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Re: Most reasonable crate SBC?

Post by Afflicted » Wed May 06, 2015 2:39 pm

Cheapest is gonna be an crate motor from chevorlet. If you want an airboat specific motor the price is going up

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Re: Most reasonable crate SBC?

Post by Afflicted » Wed May 06, 2015 2:45 pm

Hey you can get a 350 from MAS for an airboat with 2 year warranty. 350hp or 400hp and they are in your price range. PM muffled500hp and he can set you up with 1. I think it's $400 or $500 difference between the 350hp and the 400hp

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Re: Most reasonable crate SBC?

Post by bonecollector » Wed May 06, 2015 7:29 pm

355 430HP FROM Tri star with a 2 yr warranty is under 5000.00 and I just had them build me a 490 hp 383 for 5895.00 carb to pan
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crowhater
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Re: Most reasonable crate SBC?

Post by crowhater » Thu May 07, 2015 10:21 am

It more than you want to spend but I feel the best bang for the buck is a turn key LSA crate engine.
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akblackdawg
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Re: Most reasonable crate SBC?

Post by akblackdawg » Thu May 07, 2015 8:03 pm

Can't think of the name off hand, but i'd go with that shop in tenn. they will build you a airboat specific motor at that price range, and give a warranty to boot. owner even made a trip to florida to go riding and find out what airboats are all about, people on here running his motors seem to like it.

(the owner is one of those southern guys that talk kinda funny :lol: )
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Bruce
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Re: Most reasonable crate SBC?

Post by Bruce » Thu May 07, 2015 8:10 pm

i really wanna know what the story is with these "airboat specific" motors... what makes it so much more airboat friendly than the next motor... nobody will ever answer me
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rjfjr
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Re: Most reasonable crate SBC?

Post by rjfjr » Thu May 07, 2015 8:23 pm

$2000 more makes it an airboat engine :lol: :lol:

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Re: Most reasonable crate SBC?

Post by akblackdawg » Thu May 07, 2015 8:58 pm

built for highest torque in the 1000-5500 rpm range, not built to run 7k rpm, also built to run long time in the power curve range, 3-4k rather then lower rpm cruise like a car would do, many other things to add to longivity of the motor
:alaska: If you ain't living on the edge, you're taking up to much space.

15x8 Alumatech hull, with enclosed cab, aluminum cage, LS 3, 6.2 aluminum block ffi, 2.7 Balistic Box, sensinich superwide 3 blade. Built for year around riding in Alaska

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Bruce
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Re: Most reasonable crate SBC?

Post by Bruce » Thu May 07, 2015 8:58 pm

rjfjr wrote:$2000 more makes it an airboat engine :lol: :lol:
i think thats more true than what anyone will admit well said!!!!
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Re: Most reasonable crate SBC?

Post by SHOOTER250 » Thu May 07, 2015 9:00 pm

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Bruce
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Re: Most reasonable crate SBC?

Post by Bruce » Thu May 07, 2015 9:01 pm

akblackdawg wrote:built for highest torque in the 1000-5500 rpm range, not built to run 7k rpm, also built to run long time in the power curve range, 3-4k rather then lower rpm cruise like a car would do, many other things to add to longivity of the motor
oh god get out of here with that crap got 1500 + hours on a stock ls3 gm car engine that runs 3600-4k on average i dont buy airboat specific for a minute thats a gimmick
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Re: Most reasonable crate SBC?

Post by rjfjr » Fri May 08, 2015 6:12 pm

A well built motor is a well built motor been running a Craig's list rebuilt engine for 4 years and only paid $ 1400 .00

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crowhater
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Re: Most reasonable crate SBC?

Post by crowhater » Mon May 11, 2015 4:14 pm

There is no one size fits all answer to this question. First off no two boats are the same and no two operators drive the same. There are some sure fire ways an airboat purpose build engine should be set up like the cam should have at least 110 sep so the exhaust valves run cooler, etc. The new age engines like the LS3, LSA, etc are able to get away with much more than an old engine because the computer programming allows you to build in safety factors. If you build an LS3 with good valve springs, good lifters and the correct oil pump you can run it at 7000+ rpm for hours with no problems at all. In case you care the LS3 and the LSA are the same engine, the LSA head has some shrouding because it is built for force induction. The LS7 has a longer cylinder sleeve but is not as strong as the LS3 block. The LS7 head will make much more power but has a bad habit of dropping valves because of a bad valve angle and guides. Shops like Texas Speed have taken the best of both heads and now offer a better after market head.

now once again if I was going to put a SBC on an airboat I would go with either a factory supercharged LSA engine or I would build a LS3 with aftermarket parts.

short block - ERL superdeck in 440CI
heads - Texas Speed
Tuning and Cam selection Patrick Guerra out of Victoria
18x8 Alum, 496 BBC, 2.6 CH4, 4B 82" S-blades

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