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3.5-2.9 drop...OMFG!!!!

you need more injectors, you shouldnt be retarding any timing. you want to have the timing as high as it can go befor it start to retard some for the knock your creating.
 


A 2.9" on a GenV will require injectors, headers, intercooler and/or E85. No way around this, unless you want to run an unsafe set-up. Most will prefer a cam as well, to go with said mods.

Whatever seems to "work" for you though, works for me I guess.
 


hell, if you were making that power with the 3.5, i'd have kept that. curious though, why everything else but no cam?
 


its feasible. i run a 3.3 with no ic and a 3.25 at the track. takes some work and some tuning and obviously all the right little things to make it work
 
bcartman2 said:
timming is a rather retarded
Click to expand...
timmy.jpg


I was under the impression that you'd need 40lb (or whatever) injectors to go 3.2 or lower on a GenV to get enough fuel in for all that extra air. But I guess keeping the timing low will let you run. Kinda silly, though, to make a $50 part the limit on your vehicle.
 
bcartman2 said:
I have a 2.25 intercooler, headers, N*, LQ4, and the genV no cam, I know the aeroforce isnt a true measurement but it went from 230 with the correction factors to 250 with the correction factors, eventually I am going to get the car down to DynoBrian and we will see what it does on the dyno...fingers crossed. I was just amazed at how big of a change it was with the smaller pulley.
Click to expand...


I know I missed this thread by a couple days, so I don't mean to back up on the time tables and then call BS but last time I checked a LQ4 was a V8 small block.... or did I miss a memo about something else. Is this the key to getting high end torque in a L67 with a Gen V? Seems extensive to me to only allow 250whp...
 


It's just an external MAF sensor. That's it. You can use it on GenIII car's as well...I'm running a 85mm SLP screenless MAF. It does its yob.
 
bcartman2 said:
No injectors...I am able to pull off running way rich with the tune that I have, I have no kr and the timming is a rather retarded from what I have seen on other tunes. I am sure there will be no broken internals. I know the power is low, when I was playing with the tune I got about 280hp with the 3.5....It wasnt as safe of a tune though so I dumped it.
Click to expand...

I have nearly maxxed out 39# injectors on a 2.9 pulley before....
 
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