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| − | ==Output==
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| − | The aluminum head/iron block RPO LQ4 engine is rated at 300-325 HP @ 5200 RPM and 360-370 ft/lb torque @ 4000 RPM. The LQ4 uses a dished piston for 9.4:1 CR.
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| − | The aluminum head/iron block RPO LQ9 engine is rated at 345 HP and 380 ft/lb torque. The LQ9 uses flat top pistons for 10.1:1 CR.
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| − | ==Availability==
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| − | *300 HP LQ4 is found in the 1999-2007 HD truck. 1999-'00 have iron heads, 2001-'07 use aluminum heads.
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| − | *325 HP LQ4 is found in the GMC Denali C3 pickup and SUV.
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| − | *345 HP LQ9 is found in the 2002-up Cadillac Escalade, Silverado SS pickup and 2004-up B4V VHO 2WD 1/2 ton pickup.
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| − | ==Gen 3 and Gen 4 info==
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| − | *[http://www.enginebuildermag.com/Article/1096/gen_iii_gm_small_block.aspx Gen III GM Small Block] from Engine Builder magazine
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| − | *[http://www.gmhightechperformance.com/tech/0901gmhtp_ls1_ls6_ls2_ls3_l99_ls4_ls7_ls9_lsa_engine_history/viewall.html LS1, LS2, LS3, L99, LS4, LS6, LS7, LS9 And LSA Engine History] from GM High-Tech Performance magazine
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| − | *[http://www.chevyhiperformance.com/tech/engines_drivetrain/shortblock/0912chp_performance_chevy_ls_engine_comparison/viewall.html Performance Chevy LS Engine Comparison] from Chevy High Performance magazine
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| − | *[[Media:Building the Chevy LS Engine - Rebuilding, Performance Mods - M. Mavrigian (HPBooks, 2010) BBS.pdf|Building the Chevy LS Engine - Rebuilding, Performance Mods]] by M. Mavrigian
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| − | <br><br>
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| − | [[Category:Engine]]
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| − | [[Category:Undeveloped Engine articles]]
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| − | [[Category:Undeveloped articles]]
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| − | [[Category:GM]]
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