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Chevy/GMC Duramax 04.5-05 LLY Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines

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  #1  
Old 12-02-2012, 12:53 PM
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Question Why are some lb7's harder to prime than others

Is paying the extra money for 5" exhaust over 4" worth it?
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  #2  
Old 12-02-2012, 01:16 PM
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5" is a pain in the neck to fit and rather big.. but hey if you want a deeper louder truck the fives the way to go but the 4" will be easier to work on.

CR9712v's Sig:
Cody - 1997 Dodge Ram 2500, Reg Cab, J.R.E stage II plate slid, 58/76 afe bladerunner, stock injectors etc...,minor pump and afc adjustment, DIY intake , leveling kit, bf goodrich km2 33's, 5% tint all around, straight 4"-5" stack w/ flapper.
Wise men learn from wise words. A fool from his own experience
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  #3  
Old 12-02-2012, 01:23 PM
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Do you have to have a 4" down pipe on duramaxs?
Is a full 4" system sufficient with high hp?
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  #4  
Old 12-02-2012, 01:33 PM
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yes with 3" your egts more then likely be high if your going high hp.. you probably have to find a 4" downpipe and custom bracket it yourself though. Xtreme Diesel Peformance should have one. If not try Pinnicle Performance Exhaust.
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  #5  
Old 12-02-2012, 06:51 PM
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You could try matching title to content of thread

tiremann9669's Sig: 96 12 valve Club Cab 4X4, K&N Intake,4'' Straight Pipe, 285/75R16 Bridgestone Revo's,on 16X8 American Racing Black steelies, Firestone ride rite airbags Future Bombs Guages, Aftermarket lift pump, Fuel plate, Injectors,etc,etc,etc Oh Yea I'm sure a clutch will come into the picture sometime too
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  #6  
Old 12-02-2012, 06:54 PM
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and that too
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  #7  
Old 12-02-2012, 08:04 PM
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Originally Posted by tiremann9669 View Post
You could try matching title to content of thread
Exactly,

what's up with that!

2004LB7's Sig:2004 LB7 Duramax, EFI Live with DSP5 upgraded Tune
stage 4 SC transmission,5" exhaust
160 lift pump, homemade dual fuelers
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all built up from a salvaged vehicle by me
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