Originally Posted by 1AMatt
(Post 976650)
Agreed... 20 Mpg in a 3/4 ton truck is pretty good!
Mines straight piped out the back and it's quite fine inside the cab, I can easily have a normal conversation with my fiance in the passenger seat, or anyone in the back for that matter, on the highway its quite tame, only once I step on the torque pedal does it make noise, and what a noise!:rocking: |
Exhaust and EFI-live will help the most. Intake isn't going to do anything. Do the PPE airbox mod, and you are good to 500Hp.
20-22 is pretty good for a truck this big. :) |
PPE air box mod
Originally Posted by Snowman7
(Post 1005750)
Exhaust and EFI-live will help the most. Intake isn't going to do anything. Do the PPE airbox mod, and you are good to 500Hp.
20-22 is pretty good for a truck this big. :) |
Wish I could get 15 or 16 mpg out of mine. More like 12 to 13 mpg LOL can't keep my foot out of it.
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Thats unfortunately is the only way to drive them, I kinda drive like I almost stole mine. My Uncle Charlie worked on Cummins/Alllisons (what a perfect match) years ago and always told me never dog/lug a diesel, it'll shorten their life. This is what he told me, 1/2 down on the throttle bring up to speed and let up for cruising. 1500-2200RPM is optimum depending gearing and tires
When in town at 35-40 and under I have my tranny in 3rd gear, 4th is used 45-50 overdrive 5th-6th for the freeway only. I make an effort never to run under about 1500RPM in town. I still average 15 in town and about 18-20 freeway if I cruise.....!!! |
I don't own an LBZ but did find this discussion pretty interesting for my LLY application.
Thanks guys... |
What is the best oil
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5w-40 & 15w-40 depending on weather
the duramax is pritty easy on oil. with regular oil changes and non synthetic oil these engines will still go 500K+ miles. the truck will fall apart before the engine requires a rebuild as for what most seam to recommend based on performance & price is Rotilla, available at walmart: Shell Rotella T 15W40 Motor Oil, 1 Gal - Walmart.com just follow the owners manual and you will be fine. now if you own an LB7, well no oil will fix them:argh: |
Never Touch The Brakes:dang:
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Originally Posted by 1959JD630
(Post 974310)
Ha yeah keepin the petal soft is pretty hard when you got that 360 stock horse under you and you have a bunch of powerchokes and cum-a-parts wanting to mess with you lol. But I finally got my truck on the road ( registered and insured ) and I took it on the highway and the odometer said I was getting 21 mpg with a full cab and a quad in the bed :jump: but yet the only thing I did to it was cut the muffler and cat off so my exhaust ends right about under the passengers ass lol but is that O.D mpg reliable?
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