Originally posted by lo3oz
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My 3Tech head was shaved for about 10.5:1 compression and I had to run 93 to prevent it from pinging. You might want to run some 100 octane and advance the timing more. You need to do a short video clip of the motor at idle. Mine lopped like crazy, I'm sure yours will too!
For reference, my 96 Geo Metro had a stock weight of 1900 pounds. If you've added a good bit of power to it as well as almost dropping the weight in half then it's gonna move!!
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