Ls2 oil pump is the lower volume pump too. Ls2 and LS3 pumps are the same. They are the same pumps as the iron block engines. The only motors that got bigger pumps are the aluminum blocks with VVT and/or AFM (cylinder deactivation). L92's are the bigger pump. If you want the lower volume pump I have one in VGC for $40.. but I am still not sure why