realistic LLY stock turbo 1/4's

[McRat]

For the "hardcore", I'd say nearly all Dmax folk who wanted to run a 12 with the stock charger on fuel-only succeeded, no matter what year. I've probably worked with over 200 guys who have have done it, and I can't remember if anyone failed if they worked at it.

But with just the minimum mods, when you first get started running it, low 13's are the norm.



DOH!! I can think of one guy who failed to run 12's.

Me.

Blue got close, but never got there. CC/LB 3500SRW. And the dually guys have to be a lot more determined to get there.

 

[hondarider552]

he dynod 498 and runs 12.70.

At what weight???

 

[Redbowties88]

For the "hardcore", I'd say nearly all Dmax folk who wanted to run a 12 with the stock charger on fuel-only succeeded, no matter what year. I've probably worked with over 200 guys who have have done it, and I can't remember if anyone failed if they worked at it.

But with just the minimum mods, when you first get started running it, low 13's are the norm.



DOH!! I can think of one guy who failed to run 12's.

Me.

Blue got close, but never got there. CC/LB 3500SRW. And the dually guys have to be a lot more determined to get there.

Pat I don't have any doubt that I'll be able to run 12's it's just how low I'm not sure about....I'm gonna make it happen

Now. It was said llys are slowest in stock turbo form. Is this true for sure and if so why? I don't see anything that would cause that....

 

[McRat]

Pat I don't have any doubt that I'll be able to run 12's it's just how low I'm not sure about....I'm gonna make it happen

Now. It was said llys are slowest in stock turbo form. Is this true for sure and if so why? I don't see anything that would cause that....

Some of it has to do with it being the first year of serious emissions controls. Intake system is the most restrictive out the years to boot.

 

[Chevy1925]

id think you shoukld be close to the high 12s, low 13s out of the box without fine tuning. I ran a 14.0 with my built trans and PPE hot+ 2 (was on 37s as well)

 

[Redbowties88]

Some of it has to do with it being the first year of serious emissions controls. Intake system is the most restrictive out the years to boot.

egr is blocked, cat long gone, lbz turbo inlet.... other intake pieces are also significantly more restrictive then later/earlier years?

 

[custom8726]

12's should not be a huge problem for you IMHO, We have similar trucks and I have only ran my truck down the 1/4 on 3 different occasions and got it into the high 12's with a sh!tty 60' and 285's.

 

[fastgreek]

my truck ran 13.5 @99mph witth a ppe tuner, ppe lift pump, 4' banks exhaust and bank's cold air intake with 1.71 60 ft at island raceway, the truck had 3/4 tank of diesel in it and a loaded tool box, and it was consistent as well.

 

[paint94979]

Well I've got tons and tons of passes on this truck just with the stock trans.

So why does everyone feel the lly would be slower then an lbz/lmm truck. ? I mean yea the cp3 is a little bit weaker but shouldn't the larger compressor size help a little?

LLY's are also the most temperamental of all the years... the LB7's are the simplest to make power with, and they have proved themselves over the years. Ben has had problems with random defueling, i have had problems with TC lockup at the 650+hp level. LLY's also like big timing and big PW maybe more so than any other year. Truthfully the CP3 has nothing to do with it

 

[Redbowties88]

so any problem an lly would have would generally be tuning related?

nothin in hard parts should make it any worse off then an lb7 correct (besides the slightly smaller injectors but the shouldn't really mater at this power level)

am i correct in thinking the slightly larger compressor diameter is a bit of an advantage over other years even though its a trade off for slower spooling time?

 

[TrentNell]

so any problem an lly would have would generally be tuning related?

nothin in hard parts should make it any worse off then an lb7 correct (besides the slightly smaller injectors but the shouldn't really mater at this power level)

am i correct in thinking the slightly larger compressor diameter is a bit of an advantage over other years even though its a trade off for slower spooling time?

Beings how the LB7 turbo is waste gated I think it has the advantage in stock form for the most power because of DP advantage's , the LBZ has the an advantage because of the more robust fuel system , the LLY well got the lesser performing turbo ( VVT ) and the lesser pump ( lb7 pump ) , and the smaller sticks so ...........................

 

[Redbowties88]

Beings how the LB7 turbo is waste gated I think it has the advantage in stock form for the most power because of DP advantage's , the LBZ has the an advantage because of the more robust fuel system , the LLY well got the lesser performing turbo ( VVT ) and the lesser pump ( lb7 pump ) , and the smaller sticks so ...........................

Ok I can see the DP advantage of the ihi but enough to overide completely the 6mm compressor jump? Also I don't see what makes the DP on an lly worse then an lbz as long as the induction issue had been addressed. Except for the same size turbine trying to drive a slightly larger compressor.

They both use the same housing correct?

 

[Diesel Pilot]

Getting into the 12's is not as easy as it seems. I liken it to the sound barrier. Once you pass it though it seems that it becomes easier to go faster after that.

Shoot for 12's and see if your truck is a freak. People think these things are all the same but they are not, not even close. Things can be done to even the playing field but it's a lot easier in a "fast" truck.

I also wouldn't compare to RDL's truck either, that thing is seriously fast and has a great driver. Lot's of little thing's make it as fast as it is.

Also, tuning, tuning, tuning! The only way for a tuner to make your truck fast is to invest serious time in a specific tune for your truck and your truck only. Running a tune that works great on someone else's truck will get you close but it needs to be custom tailored to your truck to shave the most time.

If you can pull mid 12's that will be awesome.

 

[TrentNell]

Ok I can see the DP advantage of the ihi but enough to overide completely the 6mm compressor jump? Also I don't see what makes the DP on an lly worse then an lbz as long as the induction issue had been addressed. Except for the same size turbine trying to drive a slightly larger compressor.

They both use the same housing correct?

Drive pressure greatly affect "scavaging" in the cylinder so , ya the compressor may not flow as much but the "system" may flow more still . also consider the issue's Paint mentioned on tunning issue's that can greatly affect ET its always best to seperate MPH and ET and work on them seperatly , addthe fact the LBZ has more fuel at its disposal then you have a "guess" at why it could possibly run faster with similar turbo's . As Diesel Pilot said , it takes alot of effort to "dial" a truck in to its potential ans some of that is dialing in the driver to the truck , it doesnt happen over night but work hard at it and you will get it .

 

[Redbowties88]

Getting into the 12's is not as easy as it seems. I liken it to the sound barrier. Once you pass it though it seems that it becomes easier to go faster after that.

Shoot for 12's and see if your truck is a freak. People think these things are all the same but they are not, not even close. Things can be done to even the playing field but it's a lot easier in a "fast" truck.

I also wouldn't compare to RDL's truck either, that thing is seriously fast and has a great driver. Lot's of little thing's make it as fast as it is.

Also, tuning, tuning, tuning! The only way for a tuner to make your truck fast is to invest serious time in a specific tune for your truck and your truck only. Running a tune that works great on someone else's truck will get you close but it needs to be custom tailored to your truck to shave the most time.

If you can pull mid 12's that will be awesome.

i dont mean to sound cocky but driving wont be a problem...ive already got 100+ passes on this truck easy and im close enough to the track where becomes an every week kinda thing for me.


but i know its not gonna be simple but i have faith that nick will be able to give me a tune to get the job done

 

[Redbowties88]

thanks trent im not giving up till it goes that fast....and even then i wont be done:thumb:

 

[TrentNell]

i dont mean to sound cocky but driving wont be a problem...ive already got 100+ passes on this truck easy and im close enough to the track where becomes an every week kinda thing for me.


but i know its not gonna be simple but i have faith that nick will be able to give me a tune to get the job done

Its not a "drive skill " problem its learing the truck , what boost or RPM gets the best 60 fts , if you hold a certain rpm longer and build more heat can affect 1/8 times , deep staging VS shallow staging ect .

 

[McRat]

...
but i know its not gonna be simple but i have faith that nick will be able to give me a tune to get the job done

There are at least a dozen tuners I know of that have produced 12 second LLY tunes before Nick. The PPE Hot +2 produced 12's in LLY's before EFILive came out, and before Nick knew diesels didn't have spark plugs.

It's not the tuning. You could run 12's with an Edge box if you were willing to work hard enough at it. The engine is capable.

 

[Redbowties88]

Its not a "drive skill " problem its learing the truck , what boost or RPM gets the best 60 fts , if you hold a certain rpm longer and build more heat can affect 1/8 times , deep staging VS shallow staging ect .

Oh I know for 2 years before getting the cash together for the trans build I've been racing this thing and I've got a pretty good idea of how to produce the best times. I know the new power level will completely change the game but I'm confident I'll be able to learn what needs to be done on my part driving wise fairly quickly.
I've even got my RT's down to .0xx almost every pass usually in the .05 or better range


Ok well in that case pat I'll get it done. Like I said before if it's possible I'm not gonna give up till I make it happen

 

[Big Block 88]

I have never run one of Nicks tunes before, and I am sure he is a capable tuner but there are some tuners out there that can tune that LLY better. Many are on this site maybe you should hook up with one of them?? IMHO any tuner that just has a HUGE library of tunes is NOT tuning for a certain trucks needs. The fella on this site who tuned my LBZ took my factory tune and built a cutom tune based off of a proven 12 second LBZ tune he had built for personal use.

Not bashing Nick I just know there are better "custom tuners" out there.