ls4 block
Yes, and yes. The block is the same as the truck block, just fitted for the W platform. The oil pan, intake manifold and a lot of other stuff has to go though. The crankshaft reluctor is different on your Gen III crank is the only difference.
because brand new ls4 blocks are available for 400, seems like a cheap start to a build. i have an ls1 now, is everything i have on my motor going to switch over to the new block? covers, oilpan, heads, intake, accesory drive. can you use a regular waterpump on the block? i would get a new rotating assembly in it, but can i have it set up with the same reluctor and everything, so there will be no changes other than swapping shortblocks?
LS4 Block Caution The LS4 block has the GM "corporate" bolt pattern on the rear, not the Chevy Gen III&IV/SBC pattern. It will only fit the FWD GM trans bellhousings and some other configurations (unless you use an adapter plate) 
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Greg Fergus has about 10 of these (new) at a damn good price. They're great for a Fiero stealth conversions
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.Greg Fergus has about 10 of these (new) at a damn good price. They're great for a Fiero stealth conversions
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Verdad Gallardo thanks cool, it only took a couple days for someone to finally tell me what i needed to know. basically, i cant use it for a rwd car. someone else told me otherwise. and i was almost gonna buy one of those blocks. for the starter, is there just no tapped holes, but a machine shop (or me) could drill and tap and be ok on that issue. and then getting a bellhousing/transmission setup wouldnt be too bad. maybe it is possible? but it looks like the cheap price of the block isnt gonna be so cheap after all the custom fitment needed. anyone else have any comments, has anyone actually used this block in a rwd car?
