525 HP LS 3 Powered Murphy Moose on Floats 

It ~seemed like you went about 3 miles and took off at 200mph.

At 525hp, I’m surprised it took that long to get off the water.

@user-jr9pb8rf8p And patey also owned his mistakes and admitted them

It did seem like the takeoff run was rather long.

That 525hp engine sounds like a. LS376/525

Glad you like it!, He is working on a turbo so it will add 100hp we will do a follow up video

Bang on. Something not right.

Glad the RU-vid comment section experts have arrived! Keeping everyone safe one comment at a time. Amazing how you are able to diagnose all these problems from a short 360 cam video. Good thing you're keeping everyone safe👍

Calm water increases suction on the floats

I have full scale aviation background & fly RC aircraft.. RC are much more sensitive to CG shifts..weight and balance can be seen immediately in hand or on balance stand & scales .. in the air we see & feel the results without mortal risk..one finds discernment of aircraft behavior is the primary focus as control is the same, but operation is MUCH simplified compared to full scale. I fly electric STOL land & float planes, on the RC we usually have ONE water rudder that doesn't retract, now more planes have two, and reverse thrust allowed by speed controllers is common.. Seems like quite a plane..big 4 blade prop tells you how much torque that engine has! What a sound! Fly safe!

*I might have noticed elevator/power control touch concern.. *Full aft elevator required until on step is typical to assure prevention of noseover..coordination of backpressure is absolute minimum control required .. Engine out float landing characteristics of this plane with its weight & feathering prop must inspire more confidence in the moment..retaining energy through roundout & flare🤔

That was my thought. Pretty long slide for 525HP and only two people. I bet it would do better with Aerocets.

@@mannypuerta5086 the wingspan is shorter on those than I’d think. 36’, I believe.

hell..look at that feller sittin in the back of the plane!!! lmao!!! hes gotta be everybit of 370-380 lol

A lot longer. Agreed

@@mannypuerta5086 The long takeoff run may have something to do with the smooth water. Smooth water can hold floats down.

Glad you liked it! Have you heard the PT6 turbine moose? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yys-pnIQyro.htmlsi=3nhRQup7i67z4QqD

Might as well shout "heads off."

That's a Funny statement, I have been flying in, and worked around commercial float planes, Beavers, 185, s and Turbo Beavers, and have never heard a commercial pilot, say "clear props" that's clearly a Rookie, Private pilot Thing 😂😂😂

@@chetmyers7041 🤣🤣🤣

We appreciate your comment and your finely tuned ears!

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yys-pnIQyro.html&pp=ygUbIGJlYXN0IG11cnBoeSBtb29zZSB0dXJiaW5l

lol 😂 there are a few in the comments but they probably fly Prius powered airplanes😎

Thank you for the comment, I hope you subscribe much more to come! just uploaded a short of it landing over power wires

Top notch for sure, no half measures there! Thanks for watching and the comment

@@SchlenkAir anytime! Keep up the great content!

Been done a lot, actually. Extremely awsome!

Heavy D definitely needs one but then again he can afford any toy he wants and he wants a lot of them 🤑

It is noisy but the A20’s help. FYI the audio of engine was recorded separately so that is not coming over the headphone mics. Thanks for watching we will do a follow up video this summer

@@SchlenkAir I look forward to it!

I have an Vans RV7A ls build. Im starting to post videos of it on my channel if you want to check it out.

That LS3 makes 525hp at 6200rpm. He's clearly not turning it that fast. I'm assuming that prop has a max speed of about 3000rpm. Without a reduction gear, that means engine speed is limited to 3000rpm - where that engine makes about 250hp.

Thanks for the comment, he did talk about adding a bit more weight in the baggage compartment.

Ls3 is a aluminum block

All those cubes and some good heads might even make more power while keeping that reliability. Solid engine idea, id have never thought of Pontiac

Cleatus, is that you!! LOL

@@SchlenkAir lol Cleetus does love a good LS swap. And he is doing his seaplane training for the endorsement.

Thanks for watching and commenting! We will do a follow this summer showing more of the engine. Please subscribe!

Chad is currently building a SuperStol so subscribe to see that as we will be doing a video this summer. Thank you for commenting and watching

That would look really cool

Thank you very much!

Actually, cost should be even less. You can get a 525 HP LS3 (the same one that's in the Corvette) straight from Chevrolet for around $12K, and the ECU, for a self tuning one, run about $1K. If you really wanna be safe, I'd also recommend a dry sump kit for around $5K. And don't even bother with a gear reduction drive, just slap that prop to the flywheel and send it! XD

@@lizzyobrien2376 idk about sending it, from what I've read the gear reduction is kinda the cherry on top of adapting automotive engines for both aero and marine applications. In both applications the factory engine remains at a constant high rpm to maintain forward propulsion. Car engines really don't like revving so close to red line for that amount of time and will wear out drastically quicker doing so. I'm thinking the best bet is getting the engine between 2500 and 4500 rpm, kinda like doing 80-90 on the highway depending on number of gears and ratios. The majority of that cost is also getting a plane with a bad engine, repairing any non-engine related issues, and going through registering it with the FAA while having a non-factory engine. IIRC you have to have any and all modifications to the airframe and power plant overseen, inspected and certified by an aviation mechanic.

@@lsswappedcessna Bigger planes like this probably using longer props where max prop rpm may be about 1500 rpm. An Ls engine turning 1500 rpm is not much above idle and is probably putting out 65 hp. There would be zero benefit to using a huge V8 running at idle speeds to make 65 hp. These engines make their power at redline, a gear reduction is absolutely necessary to put the engines full power at redline (5900 rpm) to turn the prop at its max rpm of 1500. For max efficiency with plane cruising at 70% power (4200rpm) puts you right in the meat of the torque plateau; a variable pitch prop will allow you to coarsen the pitch to absorb all 400 ft/lbs.

It would be easy on airplane gas and a good cam. You can hear how lopey it is at idle.

Likely just a cammed LS3 with better exhaust. The stock LS3 makes 430 hp without mods and is very reliable

@@my31and37 Very reliable in a car, not an airplane.

@@bobqzzi this is a popular swap.. lots of them flying in various aircraft

Thank you for the comment, we have much more planned and just ordered another 360 camera, stay tuned, please subscribe and share. Thanks again!!

Ill be posting more about my Vans RV7 LS1 build/ rebuild

My grandfathers last plane was a 185 on amphib

What part? Id like to build and haven't found anyone building at the few airparks I hang at

Thanks for the comment and watching please subscribe for the follow up video

You're so full of clay

There has to be a reduction gear in there, but does not seem to be an effective match for that propeller. My overall impression is that engine does not belong in that aircraft. Good looking airplane though.

@@richardcarnahan5184 I'm a lot more of a car guy than a plane guy - and I know the LS platform well. To me, that engine sounds like an open-exhaust LS at wide open throttle, at about 3000rpm. No WAY is that thing going 4000+. My bet is it's direct drive and Logan's comment about is spot-on... That LS3 makes 525hp @ 6200rpm, but only about 250 or 300hp @ 3000rpm. The LS3 is 6.2L displacement, or 376 cubic inches. It's not making any more power per cubic inch than any other generic Lycoming or Continental... Unfortunately.

@@GroovesAndLands if you listen in the video he says cruise rpm is 4250 when he pulled it back. Sounded like 5k plus on take off. Dont know that I'd trust it, I've played with plenty of ls stuff and wouldn't put one in a plane.

@@jamesl3420 Thanks for reply! Admittedly, I only skimmed the video and missed where he claimed cruise RPM. Don't see why he'd lie about it. It's still a super cool arrangement.

@@GroovesAndLands Good point.

Thanks for the comment, video was not planned so we will do a follow up this summer showing the engine, in mean time check out Moose Mods www.moosemods.com/moose-ls3-performance-mods.html

Thanks Trent!

Awesome, thanks for subscribing!!

while the engine may make 525hp, I bet the RPMs are limited to around 4800 so it never sees that much hp. It depends on the PSRU gear ratio. My amphib never sees more than 300hp due to my 1.67 ratio on my PSRU. I have a chevy zz4 corvette engine that makes about 330hp max

Still a closed loop system with a radiator