Leaked Service Manual shows the LG-V510 as being an LG G Pad 8.3 variant
The Service Manual, which was spotted in China, reveals that the LG-V510 will feature an 8.3 inch panel with a resolution of 1200 X 1920. Also on board is 2GB of RAM, a 5MP rear-facing snapper and a 1.3MP front-facing camera, all powered by a 4600mAh cell. The dimensions of the device also happen to match those of the Nexus 8 (216.8 x 126.5 x 8.3 mm).
Unfortunately, we should add that the word Nexus is not seen in the Service Manual at all and it does not appear on photographs of the device in the manual. If you're a betting man, or woman, you'd probably put your money down on this being a variant of LG's current 8.3 inch slab.
source: Weibo (RegistrationReq'd), juggly.cn (translated), RBM (translated) via UnwiredView