06-07.5 LBZ & LLY Duramax PowertrainDiscussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect
__________________ -2008 LMM SLT Blk/Tan
-5"MBRP + Quad2 + Edge Insight (all from Tyler@ Meyerperformance)
-Alcoa H2s with 285 Michelin LTX at2s
-Chrome handles and step bars with 30/20 tint
-Full of Amsoil from front to rear (From BigDaddy)
Speed rating? We're doin a 100+ mph in 4 high that was only engineered for 65 mph tops. I'm sure the rubber will hold up. Lol! Actually i had mine up to 157 for about 2 miles racing a little BMW headin to Vegas on 285 75 16 Pro Comp Xtreme MTs. I was more worried about the 1800 degree egts!
__________________ 06 CC/SB LBZ
I got a D-MAX Baby!
Tuned with EFILive
my truck ran 2000rpm at like 74ish with stock gearing and 315's...which is prettty close to where you wanna be for optimum mileage
Let me get this straight. For a duramax owner to get "optimum milage", he would need to put on a set of tires 4" taller than stock? Wow! Has anyone told this secret to GM yet? Just kidding with ya man.
__________________ 04 CHEVY DURAMAX LLY, BANKS BIG HOSS BUNDLE, PDA (), TECHNICOOLER, KEYS AND BLOCKS,315 BFG KM2'S, 4.56'S, PPE RACE VALVE, PPE TIE ROD SLEEVES, EFI LIVE COMING SOON SHORTLY AFTER.....NEW TRANNY
I think he is saying is this. Given a set of tires, regear such that your desired cruising speed is around 2000 rpm. I agree.
I would say 1900, but splitting hairs.
Sorry guys, but I disagree. After putting my 315s on (but before regearing) it cruised about 2000rpms at 74-75mph (like redbowtie said) but got horrible milage. It felt like it was right below the socalled "powerband" and had the worst turbo lag ever. But i guess if everyone elses truck (that runs this combo) is getting such good milage then maybe I have other problems to worry about.
__________________ 04 CHEVY DURAMAX LLY, BANKS BIG HOSS BUNDLE, PDA (), TECHNICOOLER, KEYS AND BLOCKS,315 BFG KM2'S, 4.56'S, PPE RACE VALVE, PPE TIE ROD SLEEVES, EFI LIVE COMING SOON SHORTLY AFTER.....NEW TRANNY
Why would you experience turbo lag if you were on the hiway? Point is, 315's do get lousy mileage. Most people spend half or more of there time off the hiway. They suck in stop-go.
__________________ Michael, 2500HD LLY, Systems Engineer, EMAIL
Why would you experience turbo lag if you were on the hiway? Point is, 315's do get lousy mileage. Most people spend half or more of there time off the hiway. They suck in stop-go.
Thats what i'm sayin. If you put on bigger tires, then regear to compensate. And as for the turbo lag, I can't explain that. When i would speed up to pass someone, it just took forever for the turbo to rap up. Don't have that problem anymore though.
__________________ 04 CHEVY DURAMAX LLY, BANKS BIG HOSS BUNDLE, PDA (), TECHNICOOLER, KEYS AND BLOCKS,315 BFG KM2'S, 4.56'S, PPE RACE VALVE, PPE TIE ROD SLEEVES, EFI LIVE COMING SOON SHORTLY AFTER.....NEW TRANNY
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right they just show n' shine aint spoolin that turbine
Just kidding with ya man.
), TECHNICOOLER, KEYS AND BLOCKS,315 BFG KM2'S, 4.56'S, PPE RACE VALVE, PPE TIE ROD SLEEVES, EFI LIVE COMING SOON
SHORTLY AFTER.....NEW TRANNY
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