If you go on Corvetteforum.com there are a number of LS7's for sale (pullouts) for around $10K. A brand new one with ported heads etc zero miles for $11K. I know that is more than an LS3 cost... but you are getting 50 cubes+ and most of those have upgraded cams/springs, ported heads etc.
There is also one with 15K miles, ported heads/intake, cam, 570rwhp for $8500obo. It is a longblock so no intake.
I'm selling the oil pan adapters to make lines and run the dry sump tank either in the engine bay or trunk. You can buy a used dry sump tank off of eBay or RacingJunk for a couple hundred $'s. LS7 intake manifolds are around $250 or less (without TB or injectors). You can run LSA (56#) injectors and the rail is around $160 new or you can run Holley billet rails $120 and build them out from there.
I ran my LS7 with Holley HP Efi and a cable TB. I kept the dry sump. With only a cam upgrade and headers/tune it made 520rwhp/472rwtq and did 138mph in the 1/4. 3000lbs with driver. 50 cubic inches does wonders for torque in the low/mid range.
The main issues with LS7 motors is the valve guides wear out prematurely and the factory exhaust valve is prone to failure.... as long as those have been addressed it's a great motor.
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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; 12-02-2015 at 11:00 AM.
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