A stock LS6 has gen1 rods and they are limited to about 600rwhp for reliability sake if you want to really pound on it.
The stock LS7 block has thin sleeves and not the best for supercharging.The factory dry sump also sucks ass and not worth the extra expense.
Your best bet would be to sell your running LS6 and either do an LS3 motor with supercharger cam/dual springs/larger injectors/tune and a supercharger.... or just buy the crate LSA motor and do a ported blower, pulley, cam/tune.
Have you thought about turbocharging? That's what I did for 1/2 the price of an LSA motor and plan to make a hell of a lot more power. You can do boost by gear/time/speed and really control how the power comes on.
what fuel management/computer are you running? is e85 readily available in your area?
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Project: 1969 Chevelle, alum 5.3, GTS76 turbo, Chiseled Perf A/W intercooler, Holley Dominator EFI, Davis TC, JRi coilovers, 14" brakes, T56 Magnum. CTS-V Recaro seats!
Coffey Fabrication Nashville, TN doing the fabwork! 800rwhp+/25mpg+/9's@150mph goal 
https://lateral-g.net/forums/showthread.php4?t=52976
1993 Mazda FD RX-7, built LS7, T56 Magnum, Holley HP, Davis Tech TC, 8.8" 3.73 Cobra IRS diff, DSS axles, Ohlins coilovers, big brakes.
CCW 18x11 front 315/30/18's and 18x12.5 rear on 335/30/18 RA1's, 2850lbs
10.31@137mph 165mph Shift-Sector 1/2 mile speed
441ci AllPro headed motor and 200lb weigh reduction in the works....
Last edited by gnx7; 09-19-2014 at 03:21 PM.
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