488 hp/422 ft-lbs all motor LS1 346
#21
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243 heads are 10.5:1 on an LS1 with stock head gaskets, and milled 0.020 would put it about 10.8:1.
Not doubting the numbers, just really surprised at the results from such a "basic" build.
#25
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I had a similar setup tuned by the same guy on the same dyno. Made 480/435 and ran 11.70 @124 with a 2.1 60ft. I had 243's done by TEA with 59cc. So I believe the numbers and you should see some good traps!!
#26
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And the build was just me and a friend...and LS1howto.com
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