A Superformance in Australia

Rob. Smith · #1 (**permalink**) 06-02-2007, 03:19 AM

This is the exact example of doing the rego thing. A modified LS1 LSX Chev motor is just as illegal as a 427 side oiler. Put in what the rego mob requires and once it's done...do what is required. I've got a 351 Cleveland dinosaur !
Smithy

Plums · #2 (**permalink**) 06-02-2007, 08:14 PM

I don't if that's exactly true. I could get a stroked, head and cammed LS1 through rego fairly easily, where I'm sure the 427 sideoiler would fail....

Aussie Mike · #3 (**permalink**) 06-03-2007, 01:54 AM

Quote:

Originally Posted by Rob. Smith

A modified LS1 LSX Chev motor is just as illegal as a 427 side oiler.

I don't agree. A stroked LSX could be made legal quite easily. They are externally the same as an LS1 so there is no visual clue that the block is different apart from a coat of paint over the iron. The eficient cylinder head design will give it half a chance of meeting the emissions requirements with the right tune in there. The dirty heads on the 427 FE won't have a chance. The LSX would be running the complete factory EFI system and could be tuned to clean up the emissions to a legal level.

Cheers