Loaded the 2nd gear start tune tonight I haven’t launch it yet just spooled it in a parking lot and wow what a difference I could get it to almost 3000 rpm and 35 psi without it moving… definitely more then I think it could handle launching at.
Controlling boost while spooling
- Thread starter Bbuchanan11
- Start date
What is it? Lb7 Lly lbz…. Sorry, if you said it above I didn’t see the info.
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if you look at his signature, it appears to be his 06 GMC as it lists the same specs as he mentions
For some reason signatures don’t come up on my phone. Not sure why.
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In an lbz it’s possible to set up a 2 step via dsp switch. You’ll need to ask mark about this, he’s the best tuner out there and knows how to set this up. Limiting rpm will limit boost while staging.
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It is an lbz I ended up trying out the 2nd gear start and it helped a lot I can spool it up to 3000 rpm without it trying to push… hopefully I can make it last the rest of this year and change the converter over the winter
Well after 3 2nd gear launch’s not even in the same days my old ass converter decided it did not like it lol… can’t say I’m really surprised not being the original owner of the trans/ converter I have no idea how many miles or the life it had before I got it. But I know the converter was originally sold from precision in 2012 probably about time for a refresh anyways..
If it didn’t have billet internals, you probably folded the fins over in a hurry
Do not refresh. Replace with a Goerend. Precision is a thing of the past.
Yeah I’m definitely going with a goerend converter… I was thinking about getting a limitless diy kit for the trans while I had it out.
i wont hurt to atleast go through it and make sure all is healthy since it will be out anyhow.
I can see the fluid got sparkly on the end of the dip stick in the sun light so I’d imagine it has to come apart to clean it all anyways..
mmm buddy! use to be a ton of people doin that same thing on 1st gear starts because they didnt know any better lol. flip the fins and next thing you know, you got yourself a high stall converter that couples like crap
So after talking to a buddy of mine he builds transmissions just never an Allison he’s telling me that since my truck still moves and doesn’t act like it’s slipping that my problem is not my converter? So the truck still moves but it makes a loud almost like squealing noise when it’s in drive or reverse and it’s trying to push on the brakes but it all goes away in neutral… he’s thinking some clutch’s started welding together…
highly possible. its all speculation till you get it apart. the more you post about the issue that happened, the more getting Evans kit and a converter is a good idea though.