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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #1  
Old 05-16-2010, 08:58 PM
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Default Any idea what it should run and make for horsepower?

Hey Guys I have a 2008 1500 crew cab 4wd Big Horn with the 20 inch wheel package. I have the magnaflow side exhaust, Diablo predator, and k&n CAI. Any guesses? Also any pros or cons to an under drive pulley swap?
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Old 05-17-2010, 01:55 AM
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As it stands probably mid 15's... yes, an underdrive pulley will make a difference.. probably dyno 310-315 hp at the wheels..
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Old 05-18-2010, 11:24 AM
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really chef you think what 07 4x4 run stock 16's i thought lower
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2007 dodge ram 1500 quad cab 4x4 5 percent tint all around 35 percent windshield, ported tb, diablo sport, arh headers, magnaflow dual exhaust, magnaflow y pipe, krc210x cam,nitrous,CNC ported head. 4.56 motive
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Old 05-18-2010, 11:30 AM
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im basin it on the wheels..with 17's it will drop .2-.3...the 4x4 weight kills the times too..if it were a 2wd it'll run high 14's (with 17's)
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Old 05-18-2010, 11:35 AM
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damm so what about exhaust, Diablo predator, headers nx 100 shot lol ineeda go to the trakc i too damm lazy
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Old 05-18-2010, 11:35 AM
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with all my mods i sent you i hope be in the low 13's
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Old 05-18-2010, 12:20 PM
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You know its wierd I have an 06 RT Charger and the truck feels pretty comparable through most of the power band. I know its not a race car but I sure do love the way it runs. Thanks for the information.
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Old 05-18-2010, 12:38 PM
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ya i got to go to the track. but with nx and headers full exhaust cams under drive pulley i should be mid to low 14's i guess
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Old 05-18-2010, 12:42 PM
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I dont know about 4x4 but my 2wd with diablo, k7n intake, catback, and 4.56 i would be guessing in mid 14s to low 14's because my friends mustang gt 2003 cant keep up with me...And they should be a 14s car...
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Old 05-18-2010, 12:45 PM
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I raced a 4x4 with k&n diablo and exhaust and it wasnt even a close race i killed him...So yes I think 4x4 are much slower because of the weight and most having 3.55 gear...I had him by at least 6 truck lenghts by the time we got to 90mph
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