I don't know how relevant it is, but I will throw it out there, because I am bored. 
I have not been able to find efficiency charts like that for the eforce, but it is a 2300 TVS rotor assembly so it cant be far off in numbers.
My LS402 makes 724 hp @ 12 lbs. Compression is 9.9 to 1. There is more in it but the tune is not super aggressive.
Hope that helps. 
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2007 C6 vert, auto, F55, LT3
LME LS402 , WCCH 245 Heads, Pat G. Custom cam
YSI / 3.0 pulley, ARH 1 7/8 headers, NPP
Dewitts / dual spals, A&A dual pump fuel system.
3.42 polished gears, hardened shafts, Alky control meth, Cartech line lock, ECS axle loops, Trans brace, 6L80 built by me.
ID 1000 injectors, comp rockers, Morel lifters, BT springs, Trend 3/8 pushrods, ATI 10% OD Damper
Circle D Triple Disc stall
1009 RWHP @ 7000, 817 RWTQ @ 6000,
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