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Old 01-11-2003, 03:09 PM
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Klaus Klaus is offline
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As stated in an earlier post, the engines have different compression ratios. Also, GM even gives different engine codes for them. The Hummer engine is listed as a Vortec 6000 LQ4:

http://www.gm.com/automotive/gmpower...ec6000_lq4.htm


The Cadillac engine is listed as a Vortec HO 6000 LQ9:

http://www.gm.com/automotive/gmpower...tec6000_ho.htm



Klaus
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