Our 550HP LS motors are at the outter limits of a 3 blade 80" props capacity. When using the recommend 2.68 to 1 gear box these motors swing 4 blade 80" R prop. We have several customers with them pitched to the third mark. Nothing in this package is used, all components are new!
All of our 550 horsepower all aluminum engines come with:
- G.M. LS3 6.2L / 376 cubic inch aluminum block
- G.M. aluminum cylinder heads depend on the gear ratio and application
- Titanium retainers, 4340 valve locks and gas nitrated micro-polished double valve springs with Vinton seals
- A custom ground cam to match your application
- Cloyes Hex-A-just timing chain
- Ported oil pump
- G.M. roller rockers
- Long Stainless Steel carb studs, washers, and lock nuts
- 1 inch 4 hole phenolic spacer
- 750 cfm Holley Double Pumper Carburetor or 830 cfm annular double pumper
- Long runner single plane intake
- High energy programmable MSD control box
- G.M. coil packs
- Custom WaterThunder Performance sheet metal coil covers, powder coated in color of your choice
- Wix 51522 oil filter
- NGK R5671A-8 spark plugs
- Filled with Mobil 1 oil
All of our 550 horsepower motors get the following labor performed:
- Valve seat pressures set
- Block and plug power on demand lifter bleed off holes
- Camshaft installed and degreed (phased) to appropriate centerline
- Oil pump blueprinted and all passages in pan and oil pump ported to improve flow
- Set oil pump pressure bypass control according to oil used
- Engines are filled with oil and test run, inspected for oil leaks and leak down tested after break in
- Break-in Oil filter is removed and inspected and a new filter installed
- All engines must meet our requirements for idle oil pressure, max oil pressure and leak down percentage, along with exhaust gas temperatures
- We have a quality assurance guide line sheet that all engines must meet 100% before delivery
This motor is: $8,900 + tax.
All incomplete motors come with a limited 3 month warranty.
We also offer a complete package.
The complete package is above motor and all parts of the parts listed below.
- G.M. water pump modified for easy cooling system filling and burping
- 160 degree thermostat and housing
- Bubble tube and two blocks
- 2 Crankcase breathers
- Block mounted 115 amp self exciting one wire alternator
- Auto tensioner, idler pulley, bracket, and serpentine belt
- H.D. flywheel with matching bolt pattern for your reduction unit
- Light weight High torque starter with bolts
- Custom Innovative Accessories stainless long tube headers with 3/8" laser cut flanges specifically developed for our motors
- Multi-layer aluminum Percy's header gaskets with bolts and lock washers
- Upgraded color matching (if available) Taylor 409 10.5 mm plug wires
When you buy our complete motor packages. You only need to bolt on your gearbox and prop. Bolt on your motor mounts. Bolt in and wire the engine. Plum the fuel lines from your fuel pump to the carb bowls. Run cooling lines to your radiator and burp tank. Fill it with 50/50 mix of Dex-cool and water. Hook up guages and top it off with your air cleaner. We provide everything else. We will also bolt up your gearbox for free if you bring or ship it to us.
This package is: $10,400 + tax.
This being a mid-power motor there are several upgrades available. You can look at our parts page or just give us a call.