I would have to do a "new" real accurate cost total, but I know it is somewhere between 13-14K. I used the "BEST" materials possible though. Most do nothing for performance, I know that now, but when I was building it, I did not want to cut corners.
Stock block aluminum ls1's have made 1500 hp on the factory block! Basically just change the rods, pistons, valves, and timing chain. With trbos this will make a 100% reliable 800+ hp with un ported heads.
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Twin Turbo LS1 '71 Chevelle
1000 hp 93 octane street car
6 speed
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