Engine Mounts

The engine I have came from a 2011 wrecked HSV, so its the 317kw LS3.

The VE engine mount brackets aren't suitable as they place the engine too far forward in the CR chassis.

By swapping them left too right, they position the engine in the right fore / aft location, but using the VE bracket means the need to use the VE mounts which make the engine sit higher than intended,

The CR manual recommends VX, VY, or VZ LS1 engine mounts. However, the mounts in these earlier commodores aren't symmetrical, and push the motor out to the left hand side, requiring that the RH chassis mount be filed out to get the motor central;
However, there are alternatives which give a better fit and finish.



This pic is from another CR builder showing the engine mount chassis slot after filing out to get the engine sitting centrally.

I didnt want to do this with out investigating other options first.

 This is the VZ engine mounts, you can see the difference is about 35mm from left to right engine mount.

I bought these off eBay before I knew about the alignment issues, I also sold them on eBay just as quick, once the solution was found.

After lots of scouring the LS engine sights, i found that the VX,Y,Z commodores used a LH factory Corvette Bracket Position and a custom AU designed bracket for the RH side.

Investigating the Factory Corvette Mount Brackets I found they are symmetrical, the hole positions are exactly the same location as the LH VZ engine mount.

These are the latest version, available online through several US retailers, and from some of the local crate engine importers here.

They generally get removed and replaced for custom fitment into our local cars.

These Corvette Mount Brackets came off an LS3 Crate Engine, i bought them locally for $55 each.

The GM part numbers are:

10349964
10349965