Isn't the lower compression in the shape of the heads? Also where do you get a 4.2" pulley? If you are talking a SS kit my GS came s/c'd from the factory.
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05-25-2008
Isn't the lower compression in the shape of the heads? Also where do you get a 4.2" pulley? If you are talking a SS kit my GS came s/c'd from the factory.
05-25-2008
you got a tuner right? After reading some on hpt and talking with brian...I added a whole bunch of timing into the cruise cells of the low and high octane tables... i went from getting 18mpg at best in the city to 22...and 19mpg at best on the highway to 31-32. I am pushing 45* of timing advance in the cruise cells and that is what is netting me this gain. If you have hpt or think my table will help you lemme know and i will send ya a copy.All of this is with the mods in my sig...if you have less your gain may be more
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