Max Effort Tuning LB7 vs LLY

[TheBac]

Look at Ken's list. LB7s and LBZs dominate it. There are only 8 LLYs on it.

Back on the old stock list, there were only 4 LLYs, and that list was also dominated by LB7s and LBZs.

Take that for what its worth.....

 

[WVRigrat05]

Hands down my LLY was a dick but it was one tough whipping post. Power wise it was more gutless than others just because it was, but it made it 60k miles with blown HG's and 40+k with shot injectors, Two of my buddies had built tranny LLY's with NO HEADSTUDS, and raped em daily, Don't get it but they took it better than mine. I won't comment on an LB7, **** their injector placement, hated wrenching on the LLY as it was. MY LMM, I can't hurt it, I'm guessing it's gonna play tough guy til a piston lets go or the cranks breaks.

 

[mike diesel]

Is it time to start posting dyno sheets for stock lb7 vs stock lly motors?

 

[Bonestock]

Is it time to start posting dyno sheets for stock lb7 vs stock lly motors?

Lol

http://www.duramaxdiesels.com/forum/garage_comments.php?do=view_img_comments&id=2644

 

[WVRigrat05]

Mine was like 330 at the ass, tuned, so like 240 stock. After the build, over 530 by the shit I smoked and the seat to pants feel with a stock turbo.

 

[mike diesel]

My last dyno last month. Stock bottom end LLY I can't count how many times I've dynoed over 750 horse. Still kicking just fine.

 

[WVRigrat05]

^^Hasn't done a compression test either.

 

[OregonDMAX]

Mine are 3 inch on my 01 but they neck down to 2 1\4 or so at the turbo boot and the y bridge boot

Nvm that's the difference then, the aftermarket ones don't neck down at all.

 

[mike diesel]

^^Hasn't done a compression test either.

Why would i need to compression check it? Doesn't smoke funny, Doesn't haze, doesn't knock...oh and I'll be putting my s480 single on tomorrow too.

 

[mike diesel]

If I have time tomorrow that is if I get my turbo back, I will compression test it and post the results.

 

[jacobdewey]

In stock form, LB7 over LLY all day long. When you start to mod heavily, the LLY is easier to work on imo.

My stock bottomed LLY:




My stock Bottomed LB7:

 

[WVRigrat05]

Lol, I was just ****ing with ya, but it would be interesting to see just to prove to all the naysayers. I know Lilly's are tough.

 

[mike diesel]

Hopefully my turbo is ready for me to pick up tomorrow so I can slap it on and compression check it. I checked it back in may after my first 730 horse dyno pull and they were all at 380 psi and above. Its seen alot of abuse since then so I am actually curious myself.

Motor is coming out this winter too so we will get to see if any rods went bananas on me

 

[WVRigrat05]

Might as well throw the other cp3 on and see how long it takes to destroy it. What size injector you running?

 

[mike diesel]

Might as well throw the other cp3 on and see how long it takes to destroy it. What size injector you running?

I put the dual cp3's on back in april.. it has never been off the 750 horse tune since and i promise I abuse it. I have 30% injectors.

 

[WVRigrat05]

Wow, how did I miss that, I thought you still had it laying around the last time I read. Been a while lol.

 

[mike diesel]

Wow, how did I miss that, I thought you still had it laying around the last time I read. Been a while lol.

Yea it sat on my tool box for a week and it finally talked me into putting it on the truck.

 

[PureHybrid]

Man, everyone hating on the LLY! If I had to do it over, I'd still buy the LLY. Love me some turbo brake

Of course, if I had the money I'd buy an LBZ

 

[coker6303]

I put the dual cp3's on back in april.. it has never been off the 750 horse tune since and i promise I abuse it. I have 30% injectors.

Not to be a dick but your times don't back up the dyno pulls. Even then, on those rods it would be foolish to think that yours are a miracle set that would hold those numbers repeatedly.

I would guess you to be around 620rwhp, which is much more doable on a stock motor. :thumb:

 

[coker6303]

Why is there 6 pages on this topic?? You guys are tripping me out!! Lol

If both trucks are a stock trans, tune only then it's going to depend on who's limps first or who's cp3 is the healthiest. Rare to find either with low miles, so wear is a factor.

lbz or LMM all the way!!! :hug: