Duramax Diesels Forum Truck of the Week
  #136  
Old 12-04-2017, 11:02 PM
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THEFERMANATOR THEFERMANATOR is offline
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Your MPG sounds inline with what I've seen from 2 different motorhomes with the 12 valve 8.3l in them. I logged quite a few miles in one, and weight didn't really seem to matter, speed wasn't a huge factor either, you could count on 8 1/2 out of it in the mountains, on the flat, towing, or empty. My neighbor has a 32 or 34 foot pusher with one in it, and he is right at the same no matter how he drives it. That said, I know somebody with an 8.3l ISC, and he said he's seen 11-12 out of it.
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1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
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  #137  
Old 12-05-2017, 12:58 AM
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While low 8 isn't horrible... It's not great... I should have it 10+ come spring
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Adam
mispeeling wrods n a thraed nere u
07.5 3500hd RCLB LMM GT4088R, 4.56 gears 225/70/19.5 efi live 478k broke block
99 FL60 8.3 12v 13sp
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smooth seas never made a skillfull salior
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  #138  
Old 12-05-2017, 03:25 AM
jlawles2 jlawles2 is offline
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Glad you are back on the road making deliveries. Hope you can get the MPG up where you want it.

What was the milage in the 3500 loaded and unloaded vs the 8.3?
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Silver Birch Metallic 2004.5 GMC K2500HD with 265/75's
Banks super scoop, tubing, intercooler, and cat back with the IQ on the Window (for now). BD driver side Exhaust manifold.
Airdog 150 on frame rail. Amsoil synthetics for lubrication, and dual Amsoil filters on the driver frame rail. PPE centrifuge install.
EGR blocked. PCV rerouted. Resonator blocked (reinstalled for looks). Bladerunner installed. Dead kitty by MBRP (front pipe) and down tube replaced with the MBRP (heat wrapped from the turbo down to the front pipe).
Performax Gauges by ISSPRO in pod over mirror and overhead console (console pod by PPE). Mike L Transmission.
----Looking to do an onboard air with a set of truck air horns. Want Nathan K5LA's but not in the budget at the moment.----

06 GMC CCSB 2WD LBZ SLT package. Traded for '17 Denali

18 Denali CCSB 2500 4WD Mineral Metallic with Cocoa/Dark Sand Interior
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  #139  
Old 12-05-2017, 07:38 AM
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10-11 mpg with non winter fuel. High 9s with winter fuel was the norm
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Adam
mispeeling wrods n a thraed nere u
07.5 3500hd RCLB LMM GT4088R, 4.56 gears 225/70/19.5 efi live 478k broke block
99 FL60 8.3 12v 13sp
Quote:
smooth seas never made a skillfull salior
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  #140  
Old 12-05-2017, 07:39 AM
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Chevy1925 Chevy1925 is online now
don't know sh!t about IFS

 
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Quote:
Originally Posted by jlawles2 View Post
Glad you are back on the road making deliveries. Hope you can get the MPG up where you want it.

What was the milage in the 3500 loaded and unloaded vs the 8.3?
not to answer for adam but he saw 10-12 in the dmax loaded. unloaded was a very rare instance for him
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02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
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  #141  
Old 12-05-2017, 07:46 AM
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malibu795 malibu795 is offline
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Quote:
Originally Posted by Chevy1925 View Post
not to answer for adam but he saw 10-12 in the dmax loaded. unloaded was a very rare instance for him
Ovals 10-11
OEM 11-12
On the few long runs empty home Id see about 1mpg above loaded...
Bobtail.. 16-17 regardless of piston bowl design
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Adam
mispeeling wrods n a thraed nere u
07.5 3500hd RCLB LMM GT4088R, 4.56 gears 225/70/19.5 efi live 478k broke block
99 FL60 8.3 12v 13sp
Quote:
smooth seas never made a skillfull salior
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  #142  
Old 12-06-2017, 06:32 PM
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malibu795 malibu795 is offline
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4 fillups so far... 1-3 tanks at low 8mpg, #4 at low/mid 10mpg.. kinda baffled by that see how it plays out..
Measured the frame hieghts over axle.. front 36" rear 33" going to have to fix that
Second load picked up/Delivered
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Adam
mispeeling wrods n a thraed nere u
07.5 3500hd RCLB LMM GT4088R, 4.56 gears 225/70/19.5 efi live 478k broke block
99 FL60 8.3 12v 13sp
Quote:
smooth seas never made a skillfull salior
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  #143  
Old 12-06-2017, 07:30 PM
jlawles2 jlawles2 is offline
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Maybe she just needs to be run a little and loosened up.

As for the frame loaded vs unloaded, are you running rear air suspension? Nice looking setup. Any plans on painting it? PPG used to make a color called Lemon Ice. One of the brightest yellows I have ever seen. Guy I worked for did a custom paint job for his brother and mixed it with Hot Lick Hot Red. Total number of paint mixes was 9. Mixed one inch of paint total each time. Fist one solid yellow where he started on the roof. Next one 7/8" yellow, 1/8" red and made 2 passes around the truck starting the fade. Last one was solid red. Add a pearl flame job to the front and that would be one HOT looking HOT SHOT truck.
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Silver Birch Metallic 2004.5 GMC K2500HD with 265/75's
Banks super scoop, tubing, intercooler, and cat back with the IQ on the Window (for now). BD driver side Exhaust manifold.
Airdog 150 on frame rail. Amsoil synthetics for lubrication, and dual Amsoil filters on the driver frame rail. PPE centrifuge install.
EGR blocked. PCV rerouted. Resonator blocked (reinstalled for looks). Bladerunner installed. Dead kitty by MBRP (front pipe) and down tube replaced with the MBRP (heat wrapped from the turbo down to the front pipe).
Performax Gauges by ISSPRO in pod over mirror and overhead console (console pod by PPE). Mike L Transmission.
----Looking to do an onboard air with a set of truck air horns. Want Nathan K5LA's but not in the budget at the moment.----

06 GMC CCSB 2WD LBZ SLT package. Traded for '17 Denali

18 Denali CCSB 2500 4WD Mineral Metallic with Cocoa/Dark Sand Interior
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  #144  
Old 12-06-2017, 07:56 PM
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malibu795 malibu795 is offline
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Someone lifted the front if the truck.. there's 3 extra springs cut by a oxcyfuel torch no clue how think the OEM blocks are supposed to be.....

Just more little surprises..
Sounds s "loud" truck

Thinking deep emerald/forest green and black two tone split on the body lines
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Adam
mispeeling wrods n a thraed nere u
07.5 3500hd RCLB LMM GT4088R, 4.56 gears 225/70/19.5 efi live 478k broke block
99 FL60 8.3 12v 13sp
Quote:
smooth seas never made a skillfull salior
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