Levitator 496 425-450hp

How to soup'em up...a little less moderated...medium skin thickness required!
ladyblackwater
Southern Airboat Member
Posts: 136
Joined: Tue Jan 15, 2013 9:01 pm
Location: Davie, FL
Contact:

Re: Levitator 496 425-450hp

Postby ladyblackwater » Wed Feb 01, 2017 3:49 pm

The truck I was talking about is a 2008 Dodge Ram 1500 with a 4.7. It pulls my heavy 18' airboat pretty much everyday to the boat ramp running 75mph
Greater love hath no man, than to lay his life down for a friend.

Bitterly clinging to my guns and my religion!

I am that conservative republican your momma warned you about!

User avatar
OneBFC
Southern Airboat Member
Posts: 430
Joined: Tue Sep 11, 2012 1:04 am

Re: Levitator 496 425-450hp

Postby OneBFC » Wed Feb 01, 2017 4:14 pm

Makes sense, your truck engine has a recommended octane of 89. Running 87 would likely cause some light detonation / preignition and cause the ecm to pull timming.

Pump gas all contains similar levels of ethanol though. My vehciles have factory fuel composition sensors in them and 93 always comes in at 9.5 to 9.6% ethanol. If 10% is maximum allowed by law currently, not so sure 89 and 87 would be all that different.

The airboat will see as much as 50% ethanol however! :shock: :toothy7:
-Russ
-----------------------------------
The only thing stopping you is FEAR
400+hp Ecotec, 12x7.6 DBDO, 80" 3B Maximus, 2.3 OX,70+mph, water = purely optional
Life begins at 2 BAR, Just a good ole boy

ladyblackwater
Southern Airboat Member
Posts: 136
Joined: Tue Jan 15, 2013 9:01 pm
Location: Davie, FL
Contact:

Re: Levitator 496 425-450hp

Postby ladyblackwater » Wed Feb 01, 2017 5:00 pm

Did you look up the regular 4.7 or the flex fuel? I forgot to put flex fuel on the other comment. The book in the truck says E85 or 87 octane. The ethanol level is done by the drivers. They open the valve and there has been times when the ethanol is up to 15%. Your statement is absolutely correct.
Greater love hath no man, than to lay his life down for a friend.

Bitterly clinging to my guns and my religion!

I am that conservative republican your momma warned you about!

User avatar
Deano
Site Supporter - V
Site Supporter - V
Posts: 4272
Joined: Thu Jan 06, 2005 11:16 am
Location: Inverness, FL

Re: Levitator 496 425-450hp

Postby Deano » Wed Feb 01, 2017 6:18 pm

ladyblackwater wrote: . . . You want to talk about me spending money? I run 93 in everything I own because I don't want to spend more money then I need to. You know the old saying.....Pay now or pay later? If you spend .20 more a gallon now it's a lot cheaper then paying $1000s later. . . . If 87 octane is so good then why don't they make Rec. Fuel in 87 octane. I know more then 1 person that hauls fuel for a living and they will all tell you how crappie 87 octane is and how much ethanol they put in 87. They put more ethanol in 87 because more people purchases it.The more ethanol in the gas the more gas you use and the more they sell. You are living in the old days when fuel was good . . . .
406 JAMIE wrote:ladyblackwater.87 octane is crap lmao .and if u can not afford 93octane u should not own a airboat. wow i see y u and the fool hang around each other lmao DEEP POCKETS.and u r totally wright about asking all these questions. but to say that about 87 octane if u can not afford it u should not own an airboat is sooo wrong in soooo many ways sir idk u but i and alot of others on here really like that idea of filling or tow rig and boat at the pump on 87octane and if u can get good hp&trq numbers on that crap 87 as u put it then i think u did ur home work.y all besafe .
Realistically, it looks like you are both right.
Yes, it is bottom of the barrel crap. Image This is no longer uncommon, common knowledge. Image
and Yes, it is quite possible to build an engine that thrives on that readily available crap. Image
To quote somebody funnier than me, . "I know . . . I've seen me do it." . :lol:
ladyblackwater wrote: . . . Why would you spend the money for a lower Hp and Torque motor running on 87 when you can take the same size motor and spend $10 more on fuel per tank to have more power and a better running motor?
At the risk of sounding like a CSOB, I will point out that if the subject engine were purposely built and tuned to run crap gas while producing more than the required amount of Hp and Torque, there would be no need, requirement or justification for the additional expense. 8) . Having 'a better running motor' is a little subjective. If it performs as is expected, and couldn't start any quicker or shut down any faster, how would it run any better ? :dontknow:
"The suppression of uncomfortable ideas may be common in religion and politics,
but it is not the path to knowledge; it has no place in the endeavor of science."
- Carl Sagan

Ruccus25
Southern Airboat Member
Posts: 11
Joined: Thu Feb 18, 2016 10:12 pm

Re: Levitator 496 425-450hp

Postby Ruccus25 » Wed Feb 01, 2017 8:38 pm

Thanks you to all!
Think I made my mind up! Hoping I'm doing the rt thing.
Ima go 540,bbc Ima put the best of best in it. Hope I'm doing rt thing
Thanks again

SWAMPHUNTER45
Site Supporter - III
Site Supporter - III
Posts: 2105
Joined: Thu Nov 21, 2013 11:38 am
Location: Naturecoast, Florida

Re: Levitator 496 425-450hp

Postby SWAMPHUNTER45 » Wed Feb 01, 2017 8:55 pm

Spend $10 on a fuel tester and that will allow an accurate measure of the percentage of alcohol in the fuel your buying.

7-11 is usually some of the higher ethanol blending that I have tested

ladyblackwater
Southern Airboat Member
Posts: 136
Joined: Tue Jan 15, 2013 9:01 pm
Location: Davie, FL
Contact:

Re: Levitator 496 425-450hp

Postby ladyblackwater » Wed Feb 01, 2017 11:27 pm

Denno you are correct and I get what you are saying. In my crazy way of saying things I was trying to point out, for the money difference, longevity, power and reliability it's money better spent to go with a motor that runs on higher octane. The great part is they are selling non-ethanol 93 octane fuel by me now. I don't know everything and I don't claim I do. I will say I've always been a carb. guy because I know it and can work on it myself. I just stepped out of my comfort zone and went with port injection because the fuel we get now is not consistent. The EFI is much more consistent on the fuel we get now than a carb. I guess it's time to learn something new. I have always been told if you are not learning you are either dead or dumb so it's time to learn more.
Greater love hath no man, than to lay his life down for a friend.

Bitterly clinging to my guns and my religion!

I am that conservative republican your momma warned you about!

ladyblackwater
Southern Airboat Member
Posts: 136
Joined: Tue Jan 15, 2013 9:01 pm
Location: Davie, FL
Contact:

Re: Levitator 496 425-450hp

Postby ladyblackwater » Thu Feb 02, 2017 12:13 am

Ruccus25 I don't know where you live but if you are in South florida in the near future I will take you for a ride on my boat before you bit the bullet to make sure you are happy with your decision. My boat is 18'×8' and heavy as hell but I can put 9 people on it and go where ever I want. My boat should be back in the water here in the next few weeks. I'm pretty much redoing everything right now. Let me know if you want to take a ride. In my opinion you are making the right decision and I know you will be happy with it.
Greater love hath no man, than to lay his life down for a friend.

Bitterly clinging to my guns and my religion!

I am that conservative republican your momma warned you about!

User avatar
406 JAMIE
Southern Airboat Member
Posts: 295
Joined: Tue Jul 12, 2016 6:12 pm
Location: WEST BY GOD MELBOURNE

Re: Levitator 496 425-450hp

Postby 406 JAMIE » Thu Feb 02, 2017 9:09 am

ladyblackwater wrote:I figured you would say something about what I said. I can't help speaking the truth, that's how I was raised. You want to talk about me spending money? I run 93 in everything I own because I don't want to spend more money then I need to. You know the old saying.....Pay now or pay later? If you spend .20 more a gallon now it's a lot cheaper then paying $1000s later. If 87 octane is so good then why don't they make Rec. Fuel in 87 octane. I know more then 1 person that hauls fuel for a living and they will all tell you how crappie 87 octane is and how much ethanol they put in 87. They put more ethanol in 87 because more people purchases it.The more ethanol in the gas the more gas you use and the more they sell. You are living in the old days when fuel was good. I'll use my 1 truck as an example, it is rated to run on 87 octane but I've ran both 87 and 93 in it. I actually save money running 93 because I get a lot better fuel economy then on 87 and at 200,000 miles still running strong. I guarantee if you take 2 exacty the same pieces of equipment and run 1 with 87 and 1 with 93 the one with 93 will out live the one running on 87. I've had to prove this to a bunch of people and I've always been the one that is right. Again if you can't afford $10 dollars more to run better fuel then there is a problem. Airboating is not a cheap lifestyle. Why would you spend the money for a lower Hp and Torque motor running on 87 when you can take the same size motor and spend $10 more on fuel per tank to have more power and a better running motor?




"i figured u would say something about what i said.i cant help speaking the truth thats how i was raised."
Well this is how i was raised i speak my piece ladyblackwater/fools buddy and i guess i got up under ur thin skin lmao so just because its not what u want to hear u start throw a fit and saying stuff like i quoted u on wow.well i have no hard feelings against u ladyblackwater/fools buddy u have ur opinion like i do and u know that old saying lmao!!!.and ur a lucky person to have such deep pockets to afford that 93 octane all the time :cheers: :thumbleft: but some folks like me being disabled and on fixed income yes i do look for ways to do things like build a motor to run that 87 crap lol because its all about getting out and having fun and enjoying what GOD has offerd to us.



Ruccus25 thats great sir u will be sooooo happyyyyy with that 540bbc and yes sir u r doing the wright thing for u and ur boat :thumbleft: .but stepping up to that 540bbc what size prop?and ratio box r u runing ?because with that 540bbc ur going to make more HP&TRQ so just keep that in mind.when i went from sbc to bbc i built my bbc to match what prop and gearbox i was runing rotator 2.12.so i didn't have to add that expens and i could spend it on bottomend of bbc.
Plz besafe y all :rebel:
Melbourne Mud Mafia Down And Dirty

User avatar
digginfool
Site Supporter - III
Site Supporter - III
Posts: 2593
Joined: Wed Jun 05, 2013 3:00 pm
Location: South Florida

Re: Levitator 496 425-450hp

Postby digginfool » Thu Feb 02, 2017 10:44 am

406 JAMIE wrote:Ruccus25 thats great sir u will be sooooo happyyyyy with that 540bbc and yes sir u r doing the wright thing for u and ur boat :thumbleft: .but stepping up to that 540bbc what size prop?and ratio box r u runing ?because with that 540bbc ur going to make more HP&TRQ so just keep that in mind.when i went from sbc to bbc i built my bbc to match what prop and gearbox i was runing rotator 2.12.so i didn't have to add that expens and i could spend it on bottomend of bbc.
Plz besafe y all :rebel:



Good point and he should consider how much money he wants to spend. With the kind of power he will be making with the 540 BBC, he may not have enough prop to hold it back or have to put so much pitch in that he's just beating the air and not making thrust. He was already running the 8.1 so I doubt he was running much more gear than a 2.38 and anything less he'll have more than enough power to turn it. But, as I said, you've made a great point and if he is going from 425 HP to 750 HP, he's going to need more prop, all else being the same.
“When plunder becomes a way of life for a group of men living together in society, they create for themselves in the course of time a legal system that authorizes it and a moral code that glorifies it” - Bastiat

Ruccus25
Southern Airboat Member
Posts: 11
Joined: Thu Feb 18, 2016 10:12 pm

Re: Levitator 496 425-450hp

Postby Ruccus25 » Thu Feb 02, 2017 1:31 pm

Thanks!
I have a 2.3 on from my 496,Ima keep that on it I was thinking.
Also I have a 4 blade 80'falcon,not sure at moment what to do with that. Give me some advice bc a lot of ppl told me 3 blade R was way to go.
Thanks

ladyblackwater
Southern Airboat Member
Posts: 136
Joined: Tue Jan 15, 2013 9:01 pm
Location: Davie, FL
Contact:

Re: Levitator 496 425-450hp

Postby ladyblackwater » Thu Feb 02, 2017 1:48 pm

Ruccus25 what Hp and Torque is your 540BB going to have? That will help us answer a lot better.
Greater love hath no man, than to lay his life down for a friend.

Bitterly clinging to my guns and my religion!

I am that conservative republican your momma warned you about!

ladyblackwater
Southern Airboat Member
Posts: 136
Joined: Tue Jan 15, 2013 9:01 pm
Location: Davie, FL
Contact:

Re: Levitator 496 425-450hp

Postby ladyblackwater » Thu Feb 02, 2017 2:04 pm

406 JAMIE I respect you Sir and respect your opinion. This is what is so great about our Country, we are able to have a difference in opinion. I will say I'm sorry for offending anyone with my comment about running 87 octane. I say what and how I feel all the time and forget about the world we live in today. One thing you are wrong about me with is, I definitely don't have thin skin. Anyone that knows me knows I have extremely thick skin and it usually gets me in trouble. You make a great point about his prop and gear box. See between all of us we have helped him out in many ways. In the end we all have the same end goal of enjoy our lifestyle and what God gave us to enjoy. God bless you Sir.
Greater love hath no man, than to lay his life down for a friend.

Bitterly clinging to my guns and my religion!

I am that conservative republican your momma warned you about!

jeepinocala1111
Site Supporter - I
Site Supporter - I
Posts: 1141
Joined: Mon Apr 21, 2014 5:57 pm

Re: Levitator 496 425-450hp

Postby jeepinocala1111 » Thu Feb 02, 2017 3:16 pm

Ruccus25 wrote:Thanks!
I have a 2.3 on from my 496,Ima keep that on it I was thinking.
Also I have a 4 blade 80'falcon,not sure at moment what to do with that. Give me some advice bc a lot of ppl told me 3 blade R was way to go.
Thanks


I went from a 3 blade r to a 3 blade ngr and it is like night and day it out performs the r.

User avatar
digginfool
Site Supporter - III
Site Supporter - III
Posts: 2593
Joined: Wed Jun 05, 2013 3:00 pm
Location: South Florida

Re: Levitator 496 425-450hp

Postby digginfool » Thu Feb 02, 2017 3:57 pm

Ruccus25 wrote:Thanks!
I have a 2.3 on from my 496,Ima keep that on it I was thinking.
Also I have a 4 blade 80'falcon,not sure at moment what to do with that. Give me some advice bc a lot of ppl told me 3 blade R was way to go.
Thanks


The research I've seen shows that diameter rather than pitch or brand makes a bigger difference. Get in touch with Water Walker and see what they have to say. They've outfitted thousands of boats and will have more breadth of knowledge than anyone else on this forum, save for the folks from the other prop manufacturers. :wink: Measure your cage and determine the largest diameter you can safely install (leave at least a couple inches from cage or other fixed items). You might get away with buying a bigger hub rather than a whole new prop! :thumbleft: If you do choose to go the route of a new prop, make sure you talk to all the manufacturers and keep an open mind. That being said, I'm running an 82 inch (actually, 81-1/2 but who's counting) 4 blade NGR. I love the prop; great push, decent top end and best of all, quieter than any prop I've ever been around. JS
“When plunder becomes a way of life for a group of men living together in society, they create for themselves in the course of time a legal system that authorizes it and a moral code that glorifies it” - Bastiat

SWAMPHUNTER45
Site Supporter - III
Site Supporter - III
Posts: 2105
Joined: Thu Nov 21, 2013 11:38 am
Location: Naturecoast, Florida

Re: Levitator 496 425-450hp

Postby SWAMPHUNTER45 » Thu Feb 02, 2017 7:57 pm

The difference between an 87 octane build and a 93 or race fuel engine is horsepower.

It is going to cost you close to the same money but the 87 octane engine will need to be low compression where as the 93 and race fuel builds can add the heat.

Just as a very crude projection, an 8.25 to 1 or 8.5 to 1 may yield a hypothetical 340 hp but up the compression to 11 to 1 and you should see a increase to a hypothetical 405 hp output.

With compression you see your greatest gains from 8.25 to 1 to 10.25 after that the gain per point becomes smaller and the risk of detonation and fuel requirement higher.

It is important to remember an airboat or any marine use is a severe duty application.

ladyblackwater
Southern Airboat Member
Posts: 136
Joined: Tue Jan 15, 2013 9:01 pm
Location: Davie, FL
Contact:

Re: Levitator 496 425-450hp

Postby ladyblackwater » Thu Feb 02, 2017 8:29 pm

Swamphunter45 THANK you for putting it into words I couldn't. You are 100% correct and said what I was trying to get at. I have a bad problem with over thinking and not putting it into words correctly.
Greater love hath no man, than to lay his life down for a friend.

Bitterly clinging to my guns and my religion!

I am that conservative republican your momma warned you about!

Ruccus25
Southern Airboat Member
Posts: 11
Joined: Thu Feb 18, 2016 10:12 pm

Re: Levitator 496 425-450hp

Postby Ruccus25 » Thu Feb 02, 2017 10:08 pm

Think he told me 660@3000 can't remember the other.
I'm not 100%sure. Gonna cost me around 18000 when it's done if not a lil more. Fuel injection was a Lil more than carb,ain't about the money,just the fun!
Thanks y'all!

SWAMPHUNTER45
Site Supporter - III
Site Supporter - III
Posts: 2105
Joined: Thu Nov 21, 2013 11:38 am
Location: Naturecoast, Florida

Re: Levitator 496 425-450hp

Postby SWAMPHUNTER45 » Thu Feb 02, 2017 10:35 pm

Sounds like a great choice!

There are 2 MAS 540 specs I would clarify which engine you get for the $ the premium fuel 540 is about 100hp more than the entry level engine, honestly either will fill your need in my opinion. You probably don't need the upgrade but consult with MAS.

The spec for the base torque is 660 at 3300 you will love that engine.

The upgraded premium fuel engine has fully ported heads, upgraded pistons and a more aggressive cam.

For 18K it should be the upgraded build, freight and tax. Seems right just verify your getting the upgrade at that price

ladyblackwater
Southern Airboat Member
Posts: 136
Joined: Tue Jan 15, 2013 9:01 pm
Location: Davie, FL
Contact:

Re: Levitator 496 425-450hp

Postby ladyblackwater » Fri Feb 03, 2017 1:17 am

Great choice in my opinion. You will have the same motor as mine but the lower Hp option one. It will be plenty of power for your needs. The great thing is it will come with fuel pump, filter and regulator. There will be a few things you will have to get to finish it up but I guarantee you will be happy with it in the long run. If you have any questions you are more then welcome to get a hold of me 964-624-5195. I've been dealing with Mike for 3 years now and have no complaints. He got a little behind this last time because he was moving shops and that's totally understandable. He is a stand up Guy and stands behind his builds. I hope all goes well for you.
Greater love hath no man, than to lay his life down for a friend.

Bitterly clinging to my guns and my religion!

I am that conservative republican your momma warned you about!

SWAMPHUNTER45
Site Supporter - III
Site Supporter - III
Posts: 2105
Joined: Thu Nov 21, 2013 11:38 am
Location: Naturecoast, Florida

Re: Levitator 496 425-450hp

Postby SWAMPHUNTER45 » Fri Feb 03, 2017 8:39 am

LBW does the fuel injection upgrade require O2 sensors and bungs ?

For me the carburetor is my choice but as much fuel as you burn on a tour rig the FI may prove to be more efficient.

ladyblackwater
Southern Airboat Member
Posts: 136
Joined: Tue Jan 15, 2013 9:01 pm
Location: Davie, FL
Contact:

Re: Levitator 496 425-450hp

Postby ladyblackwater » Fri Feb 03, 2017 9:21 am

Swamphunter yes Sir it does use one O2 sensor. My EFI is the Holley Hp EFI system. I figure he will be getting the same system but I'm not sure. I agree with you on the carb. I went to the EFI because the carb. never stayed consistent and would back spin a lot of times. I'm on and off the key at least 20 or more times on a trip.
Greater love hath no man, than to lay his life down for a friend.

Bitterly clinging to my guns and my religion!

I am that conservative republican your momma warned you about!

SWAMPHUNTER45
Site Supporter - III
Site Supporter - III
Posts: 2105
Joined: Thu Nov 21, 2013 11:38 am
Location: Naturecoast, Florida

Re: Levitator 496 425-450hp

Postby SWAMPHUNTER45 » Sat Feb 04, 2017 7:33 am

Can't wait to hear about that EFI retro fit, please post a thread outlining the process and performance observations.

With our stroker we try to do a 30 second cool down and also cut the fuel toward the last 10 seconds, that seems to prevent back spin. Little hard to do when we are netting but it is a best practice when possible.

ladyblackwater
Southern Airboat Member
Posts: 136
Joined: Tue Jan 15, 2013 9:01 pm
Location: Davie, FL
Contact:

Re: Levitator 496 425-450hp

Postby ladyblackwater » Sat Feb 04, 2017 12:51 pm

Swamphunter I definitely will. I don't come on Southern to much anymore. I had Rick delete my account because I couldn't take getting moderated for not being politically correct. I don't do that political correct crap, I say the truth and what's on my mind. I logged in on my wife's account because I felt I could help him out with his questions. Yes if I would let it idle down for awile it would definitely help. The problem is most of the time I don't have the time to let it do that. When we see wildlife, it's shut down right away so I don't spook them. The back spinning is what finally sheared a valve head off and cost me a rebuild. My motor is now a 555ci BB and cost me another almost $11,000. The nice thing about the EFI is I'm getting rid of all my gauges and going with a 7" full touch screen dash. My problem is I hate computers because I don't know anything about time and I usually break them when I touch them lol.
Greater love hath no man, than to lay his life down for a friend.

Bitterly clinging to my guns and my religion!

I am that conservative republican your momma warned you about!

SWAMPHUNTER45
Site Supporter - III
Site Supporter - III
Posts: 2105
Joined: Thu Nov 21, 2013 11:38 am
Location: Naturecoast, Florida

Re: Levitator 496 425-450hp

Postby SWAMPHUNTER45 » Sat Feb 04, 2017 7:42 pm

Sounds good!

We have a 555 cubic inch roller Cadillac platform in the blue print stage with Mr. Branch fyi, seeing how your new EFI feeds an engine that big is of great interest.

I will PM my contact info


Return to “High Performance Talk”

Who is online

Users browsing this forum: No registered users and 1 guest