turbo_v8_s10

iTrader: (9)

What is the difference of the two intakes if anything at all?

supermouse4

Bolt pattern is a huge difference with the two intakes.

rsz288

Considerable difference in design.

LS7 has larger - maybe 50% more CSA at the "horn" end - completely rectangular runners (vs rounded runner tops on LS3) which are shorter along the centre line and see more plenum with the larger/earlier horn. They are also matched to the LS7 port location and shape. And the bolts are in different locations.

Its tough to improve on considering it is a regular production piece which easily supports ~540HP flywheel on an engine dyno with the nice mild stock cam.

SweetS10V8

iTrader: (4)

You cant compare them, they wont bolt on the same engine. Even if they did the LS7 port is different than the LS3 port.

FAST makes a 102mm LS3 & LS7 style intake. I have the LS3 version myself.