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S&S 110" Sidewinder Big Bore Kit
Compression, 9.7:1 stock comp on a 103 ci this kit say 10.5 that alone will it jump hp up ?
By Zee girl HD
9.7,1 stock comp on a 103 ci this kit say 10.5 that alone will it jump hp up ? I don't the extra 7 cubic inch would do anything?