Hello everyone new to the forum, happy to be here. Currently I have been just lurking and searching through the forum, which is why I I don't really want to ask this question just in case the answer is in previous posts. Since looking around for prices on engine I have found a few sites that have the engine brand new for a good price:
GM Performance Parts has the best price so far at $6400,
https://store.gmperformanceparts.com/store/SelectProd.do?prodId=7714&redir=true&manufacturer=GM&category=Engines&name=LS376/480%20EFI%20LS3%20Gen%20IV%20V-8%20&model=
I found a site Amer Speed that doesn't have the exact engine but some very similar:
355/470 for $6000
355/495 for $6300
http://www.amerspeed.com/cgi-bin/showengines.cgi?EngineTypeID=2
One last site James Rivard Parts has a LS376/480 for $6500
http://www.jrgmparts.com/GM_Performance_Parts/GM_Parts_Catalog/GM_Crate_Engines/LS_Series_GM_Crate_Engines/LS_Series_LS376_480L_19171224_/ls_series_ls376_480l_19171224_.html
I was wondering if the one if Amer Speed is in fact correct because I haven't seen any other engine with specs similar to it. I am leaning more towards the GM Performance Parts site, because it is GM and they would probably be easier to deal with locally.
Sorry forgot to mention Precision that has a Chevy SS 454 with 450/470 for $3300
http://www.precisionengine.com/rebuilt-engines/chevy-gmc-crate-engines/index.html