I have a 2000 camaro ss and Im looking in to getting the lsx gen 3 bowtie engine block, but i was just wondering would it bolt up on my car exactly like my ls1 does now or do you have to switch some things around? and when i build the block up if there was only certainparts i could put on it like heads etc?

 

It depends which LSX you are talking about.

Some people use the term LSx to refer to the iron casting LS engines used in the Silverado, etc., essentially iron verisons of an LS6 or LS2 block (depending on the year) -- we have a stroked 30-over one in our Camaro. It bolted in place perfectly and all the accesories from water pump, oil pump, belt drive brackets, etc., headers, bolt on perfectly, and AFR heads made for an LS-6 fit, too. Its about 90 lbs heavier than the aluminum but much stronger.

GM High Performance parts sells an LSX (or maybe its called LSX) cast iron block that is decked LS2, I think half an inch higher, for even greater stroke, which can go to over 500 cubes.
This may be what you are talking about since its out of the Bowtie high-po line. Its evenheavier, but stronger, and because its decked about half an inch it's about 3/4 inch wider and the assembled engine will be taller. Normally with a decked engine the stock heads fit, but you need longer pushroods since the block is taller, and on a V engine the heads a farther apart so you need either a wider intake manifold or spacers. I don't know what parts fit and what don't (oil pump and waterpump do, I was told), but I would anticipate that: a) you could make it fit in a 2000 F-body but that it would be a bit wider and taller and you'd have to improvise, b) GMPP would have all the parts you need when standard LSx parts won't fit, c) they'd be expensive.

Still, 500 cubes with L-92 ported heads could give you 600 HP NA, easily. Sort of worth it.