Well I have been working on the mounts and from what I can guess at is that when Holden buy the LS1 engine they come with a mounting ear on the L/H side of the engine, I am guessing it is the same as used in a chev of some description.
My motor still had the L/H ear on the block so I purchased a VX Commodore R/H side ear and 2 rubber mounts.
When I have sat the engine on the chassis rails the mounts were a total of 55mm out wider than the holes as drilled in the frame, I couldnt re-drill new holes out wider on the frame as the rubber mounts would contact the inner chassis main chanel.
So I drilled the aluminium ears with new mounting holes 12.5 mm further in and redrilled the fram 15mm further in on each side giveing me 55mm total.
I again lowered the engine to the chassis and everything went in fine.
When I crawled under the engine to tighten the engine mount bolts properly I can see that the
oil filter bracket contacts the engine mount tab that is welded to the chassis.
So again I jumped up from under the engine and looked around at what else is out of alignment.
What I have found is that the whole engine is 30mm to the L/H side (when measured against the shock towers).
What I can see is that the R/H mount (commodore) is longer that the L/H mount (American).
Do you guys think that I probably need the R/H mount that is likely fitted to the Chev product?
I cannot use the Chev sump as there is a crossbrace under the sump in the dip where the Commodore front crossmember normally is.
The question I have is to the Classic Revival builders who are part of the dark side.
When your chassis was supplied were the engine mount locations allready welded to the chassis and if so where did you get your engine from, ie wreckers(commodore) or Suburban imports (chev imported engine), If you bought the engine from importers did it allready have both mounting ears?
Sorry about the long winded story but I am hopeing someone can see what I am trying to say and help me.
P.S I have added some new pics to my gallery showing the engine and mount alignment.