Ls 327?
It doesn't have a RPO code like LS1 LS2. Just a crate engine if you mean this one.
http://www.chevrolet.com/performance...nes/ls327.html
http://www.chevrolet.com/performance...nes/ls327.html
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There is not an actual 327ci LS motor - at least from the factory. The closest thing would be the 5.3L (324-326ci depending on your source) which comes in an iron block and an aluminum block.
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LS1 or LS6 or LS3, etc all are basically the same engine with variations. They are all the current iterations of the small block chevy.
GenIII LS Motors - LS1, LS6 and whatever the truck versions are
GenIV LS Motors - LS2, LS3, LS7, LSA, LS9 + truck versions
GenV are LT Motors - LT1 + 2014 Silverado engine and all 2015 trucks
variations are engine block material, head material, cams, springs, valves, intake manifolds, head port size and shapes, AFM/DOD or not, etc.
So there are many variations of the current small block and the ones that actually come in a production vehicle have a production code (LS1 or LS3, etc) depending on their configuration.
So asking what a 327 LSx would be called is not really a question with an answer. You could take an LS3 and install a stroker kit to 418 or destroke it to 327 and it would still be an LS3.
GenIII LS Motors - LS1, LS6 and whatever the truck versions are
GenIV LS Motors - LS2, LS3, LS7, LSA, LS9 + truck versions
GenV are LT Motors - LT1 + 2014 Silverado engine and all 2015 trucks
variations are engine block material, head material, cams, springs, valves, intake manifolds, head port size and shapes, AFM/DOD or not, etc.
So there are many variations of the current small block and the ones that actually come in a production vehicle have a production code (LS1 or LS3, etc) depending on their configuration.
So asking what a 327 LSx would be called is not really a question with an answer. You could take an LS3 and install a stroker kit to 418 or destroke it to 327 and it would still be an LS3.