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Anyone interested in a good airboat motor?

A

Anonymous

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425HP all aluminum 2002 LS-1 small block Chevy. This motor comes complete with new Edelbrock RPM Airgap intake. New Holley double pumper carb, new MSD ignition, new Hughes flywheel, crank trigger ignition with 8 coils, aluminum water pump, aluminum oil pan, plug wires, and Tri Y exhaust manifolds. You can hear motor running on a stand. This block is a 6 bolt main cross bolt motor like the old Winston Cup Dodge Hemi’s and Shotgun Fords. It’s virtually indestructible this motor only weighs 372 Lbs. After you bolt on a gear box the complete combination only weighs 441Lbs that’s 30Lbs lighter than most O540’s and makes over a 100 more horse power. Nothing in this combination is from the 1900’s every part was made this millennium and can be bought at your local parts store for a fraction of what 50 year old aircraft parts cost. I have also developed a 550HP version for people who need MAD horsepower. You can buy this motor complete and running with timing set, jetting set, filled with oil, tested and ready to go for only $5,500. Call Dave @ Modern Time airboat engines 321-508-5316
 
Ok I'll ask the dumb questions, how much is the MAD version, what rpm is the horsepower rated at. what are trhe torque numbers at what rpm. This sounds like a good combination. is it a direct bolt in if you are already small block equiped or does engine stand need to be retrofitted to make the mounts work. You should sell some these puppies. more power less weight means even more power because less pounds to move. how much less weight than a 383 stroker with canfield heads and airgap manifold.
 
The Mad version is $7,500 I install a custom grind Comp Cam’s Roller cam, we developed this cam especially for airboats. The 550Hp version heads are fully ported with a modified quench chamber, raised intake roof and an improved short side radius in the exhaust port. Each head is flow tested on a SuperFlow flow bench and must produce at least 300CFM of airflow @ .600 lift. These heads have Titanium retainers Ferria stainless steel sever duty valves and P.S.I. double valve springs and PC seals. I will be doing even more testing in two weeks to develop a better step header I will be working with two different header manufactures one will be present when we perform the dyno test’s. This dyno session is solely for developing a better header for an airboat application. The 425HP makes peak torque @ 4,200RPM and Peak power @ 5,700RPM. I will be dyno testing my 550+ HP version in two weeks. I’m ready now but every Dyno in the state is running 24/7 in preparation for speed weeks. I’m confident I will produce around 530+ Ft pounds of torque around 4,500RPM and produce 555 to 565 HP @ 5,900 to 6,100 RPM. This motor will directly bolt to most engine stands, you just install a different motor mount pad on the side of the block. Any SBC gearbox will bolt right to it. I have weighed just about every engine combination made. Don’t trust any charts or spec’s you find posted on the web most are way off. Especially the Big Blocks. Anyway a 383 small block Chevy with a 3.75 stroke crank and 4.030 bore utilizing aluminum heads and water pump with a light weight oil pan, starter, alternator and aluminum intake weighs 558LBS. I weighed a 383 I built for a race car a few years back on a digital shipping scale that’s calibrated quarterly. It weighed exactly 558 LBS. So the LS1 motor is 186LBS lighter than a 383 SBC, a similar 350 SBC to the 383 you mentioned usually weighs around 9lbs lighter due to the internally balanced flywheel and harmonic balancer plus the 3.48 stroke crank is a little lighter. I spoke with the board administrator (super nice guy) and he will allow me to post some pictures and charts from the next dyno session. I can assure you I’m going to flog this motor mercilessly on the dyno.
 
Sounds good we be waitin 186lbs is a lot of weight savings. with a 2.09 box I believe I would be spinnin the prop about 2800 a bit high but not bad.
 
it figures after we get our new motor you post about this awsome setup. Good luck I am sure you should move some of these puppies. I just hope not to me in the any to near future.
 
I just sold a 425HP motor I had running on my stand yesterday. I expect to have two more 425HP motors completed this week. I have already sold one of them and I need to have it on the stand running by Wednesday. I can have another one completed and running on the stand before this weekend maybe even on Friday. The motor will be timed, correctly jetted. filled with oil and filter. I can run it for as long as you want and you can observe the oil pressure, water temperature and exhaust temperatures. Big Daddy When would you like to see one?
 
Has anyone put an LS-1 on an airboat, if so what about the computer.
A friend of mine is working on installing one, Turned a 78XC58 Sen. 2200 rpms. Spun a bearing, a used engine. It was a bear till it died.
 
I am pretty sure WaterThunder has had a few installed in airboats. I think he was going to put one in his own rig. Keep checking back and he will see your note.

Let us know how it works if you try it on an Airboat.

You planning to use it down around Laguna.
 
That is the intake and ignition I’m using. I think it’s funny that hot rod just did a story about this intake and Ignition. They bolted it on a new Vette crate motor and picked 21HP over the stock fuel injection. Just goes to show you that the old down draft carb still works, because you know G.M. spends all their money, effort and research on their Vette. No doubt the Vett’s computer controlled fuel injection is the best that G.M. can do. Obviously there is one thing that the fuel injection is better at and that’s fuel economy. I spoke with the board administrator and he will let me post some pictures and graphs of my next dyno pull I will be using this intake on. I hope to improve both versions by at least 15HP. Believe it or not up to 6,500 RPM the Edelbrock dual plane smoked the G.M. performance single plane. The torque was well over 450Ft pounds @ 3,500RPM.
 
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