What you have there is a Iron block with flat top cast pistons (factory ls2 pistons). If it really does have LS2 factory pistons installed, it would have to have the later-model rods (better) which feature better bolts and floating pins.
Iron block is stronger, carries 100lb extra weight (this is estimated and debated, some say its less than 90, others say more) For what your doing the strength of either is not really an issue, aluminum blocks go 1000hp and Iron goes more...
You can tell if the block is Pre 2004 or post 2004 by the cylinder head bolts. If they are all equal length, it is an earlier block. If they are staggered length (some shorter than others), it is a later model. Wait...i could be getting this backwards...i will check. Anyways...
Something to check for sure -
Stock l92 / LS3 heads cannot accept a cam much larger than 230 @ .050 (on a 112 ICL as installed) so if he has decked the heads .030 PTV must really be checked depending on size of the camshaft. I know a 230 intake on a 112 ICL must have pistons flycut to get minimum .080 clearance for sure. Stock LS2 pistons are a flat-top with no valve reliefs, and sit .005 - .007 out of the hole. That being said, they dont really need a cam much larger than 230 @ .050, due to the large intake port that is relatively lazy for its size.
Something to watch out for.
Last edited by Bigbore500r; 02-07-2014 at 12:41 PM.
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