See new walk around video introduction of the Bull Moose airframe and our exclusive LS 3 engine installation:



See the recent flight review and testimonial feedback from noted backcountry pilot Herb Millhorn in the Moose Tracks page.  Thank you Herb!.

We have now completed the latest stage of R&D in our exclusive LS3 Aircraft Engine Package with data logging to provide more precise fuel/air mixture ratio information.

Watch some exciting in-flight video of a recent trip in and out of Elk River, Idaho and the beautiful surrounding terrain.

Hear the Bull Moose start up and ride along for some local sight seeing with photographer Erik Johnston.

New Opportunity!.

Taking The Murphy Moose to another level in Power, PERFORMANCE and Style


Appearing Soon!

I am expanding some opportunities for new...or want to be Moose builders.  Realizing the task at hand in building, I am making some "slots" available for a few a week at a time, to visit our facility and get some real hands on experience in building a Moose to sharpen your skills and increase familiarity with the overall process.  This involves working with myself and/or other team members in the assembly of one of our customer's projects.  This may include major airframe assemblies, installing our Bull Moose fuselage upgrade kit, or one of our LS3 engine packages. If you have interest in this, please give me a call and we can look at time slots available and plan on having you here for a good introduction to the overall building process..

Watch for events in 2019 to view the Bull Moose and the new Super Moose!



Moose Mods

LS3 Aircraft Engine, LS3 Powered Aircraft, LS3 Murphy Moose, LS3 Aircraft Engine Conversions, Corvette Powered Airplane, LS3 powered Bush Plane, , LS3 Moose, SDS, Race Tech, Bull Moose, Simplified Digital System, SDS ignition, alternative aircraft engines,  aircraft auto engine conversions.

The Concept

The next event where the Bull Moose will be on display is coming up soon.  The High Sierra Flyin is happening this week,  and I am excited to be on the way shortly and be there to enjoy the company of like minded aviators.  Come by and say hello...and I'll be out and about as well, and would love the chance to say hello and share the inevitable adventure stories!  I will not be entering the STOL Drag competition...this time...but will be watching and learning from those who inspire us with that kind of skillful flying!


             the most recent article featuring the Bull

​             Moose at:

Moose Mods custom Murphy Moose adaptation

Cool night shot by Erik Johnston during recent photo shoot!

Moose Mods, Murphy Moose customized LS3 Corvette engine adaptation


We are able to also provide LS3 ENGINE PACKAGES for Legend, Titan T-51, Bearhawk, Aero Comp, CYCLONE, Experimental Wilga, Experimental Helio Courier, and other custom backcountry and high performance aircraft.   


Ray Watson and "The Bull Moose" with custom cowling and bright copper metallic paint.

ALSO:  Keep an eye out for an upcoming article in ​KITPLANES!

The concept and motivation behind MooseMods is simple:  Take a well designed airframe and focus on powerplant development and airframe enhancements for:

  • Improved performance with greater engine power and fuel efficiency using the well proven LS3 engine in a complete FWF package of our design

  • The use of new digital technology for ease of in- flight engine management


  • Aerodynamically efficient cowling for better speed and forward visibility

  • Structural Upgrades for Expanded Airframe Ruggedness and Operational Utility

  • Improved Personal Conveniences and In Flight Environmental Visibiliy……and an important measure of “Cool” thrown in for good measure! 

Important Notice:   An unfortunate situation has come to our attention about which I want to make our great customers aware.  There is another company marketing a LS3 aircraft engine package using unauthorized images of the one and only Bull Moose belonging to MooseMods, including our LS3 engine installation pictures.  Also on their site was a first flight video of our prototype in which this company makes the inaccurate claim of having developed our engine package.   That video has been taken down by YouTube.  This individual is inaccurately suggesting that the LS3 engine package MooseMods has developed for the Bull Moose to be of their design and is using our intellectual property and significant financial investment to promote a new business without permission.  It is the case that the individual going by that company name was hired by MooseMods as an independent contract employee for limited work to only assist in the assembly of MooseMods selected and designed components.  There was the clearly expressed understanding that these efforts were for the development of exclusive MooseMods products, use and resale.  In addition to the violation of that understanding, it has been subsequently necessary to re-do much of the work done by this individual due to the defective work performed. Rather than identifying that individual by name, the presence of any images of the Bull Moose identifies them as this noted party.

It is unfortunate to need to address this issue because of the confusion it is creating. We want to simply recommend to our customers to exercise caution in reviewing what is being presented by another company in the market place in the use of the our LS3 engine in aircraft applications.  This noted company has not installed an LS3 engine in an operational aircraft and has no flight testing experience with the engine package being promoted.  MooseMods and LSaeroengines are the sole owner of this FWF engine and related airframe upgrade packages and reserves the exclusive right to market and sell our exclusively owned and developed products.  The company in question is attempting to capitalize on the experience gained at our sole expense and is infringing on our intellectual property toward that end. 

Any informed customer will certainly appreciate that countless hours and major resources are spent in Research and Development of a Firewall Forward engine package, as well as the lengthy process of fine tuning the many components of such a product which occurs over an extended period of time.  That has been the mission of MooseMods and we are proud of what has become an outstanding example of a well proven and tested package that we now present to serious aviation enthusiasts.  Now on to more pleasant topics...

See take off video from a recent trip to visit our partners at BRC Aircraft in Chilliwack, BC. NOTE:  These are not intended to demonstrate STOL capability, rather conservative operation.