elir_mn

Hi guys, greetings from Venezuela, I have a client with a 2006 Silverado reg cab short bed, 5.3 full bolt on cam 243 heads and 4.56 rear end, we use it first with its 4L65e with a performance overhaul kit, first the trans was very good, until we started to have their common problems for not supporting power, we changed to a fully stock 4L80e with its stock converter, we have noticed that its start to deteriorated much as much as a 2008 Silverado only tune starts at its side until 2006 makes its first change and what about, it is worth noting that 2006 is running with hoops 22¨.

My question is: Is this normal for changing to this trans? I understand that the first speed of the 80e is longer, what would I have to do to improve the start?

I await your opinions and your experiences, thanks

MaroonMonsterLS1

That post made a total of 0 sense

2002_Z28_Six_Speed

iTrader: (20)

I think he is talking about the 4L80E having a higher first gear and the customer having very large wheels. I would think a 4.56 would be enough gearing. I've never ran big rims before though. Maybe going to smaller, lighter wheels is the correct solution.

elir_mn

[QUOTE = 2002_Z28_Six_Speed; 5457027] Creo que está hablando de que el 4L80E tenga una primera marcha más alta y que el cliente tenga ruedas muy grandes. Yo pensaría que un 4.56 sería suficiente engranaje. Aunque nunca he corrido grandes llantas antes. Tal vez ir a ruedas más pequeñas y livianas sea la solución correcta. [/ QUOTE]

Excuse me if you do not understand my English well, sometimes I use the translator, many times it does not work well,

What I mean is, I've noticed a lot of deterioration in the launch on this truck since we changed from 4L65 to 4L80, the truck since we had the 4L65 had already installed a 4.56 gear, then we installed the 4L80 and it started everything, the 4L80 behaves very well does not give symptoms of some wear or something, changes firmly, I only notice that the engine costs more to accelerate, as I understand your stock converter is very large and is not made for performance, there are those who say that be the problem, here is where I consult in this forum

ZO6Ted

Welcome! I get your meaning well enough. The longer 1st gear of the 4l80 of 2.48 vs. the 3.06 of the 4l65 is the issue. Change to a higher stall converter such as at least a 2600-2800 to regain the off the line performance. A 3000 or above would be even better but can be a little harder to live with on a daily driver although with 4.56 it would probably be fine. Some guys even run 3200-3600. The main thing is to match it to the power curve of the cam. Circle D, Yank and Precision Industries are all excellent choices and they can recommend the correct one.

ZO6Ted

With a cam the converter will make all the difference in the world!

elir_mn

Thank you very much for your help

ZO6Ted

Yes sir my pleasure. It's going to be a different beast altogether with a looser converter. Good luck!

MaroonMonsterLS1

once i saw that it was through a translator, I was able to make more sense of it. for example when you say it "changes firmly" I was able to understand that meant "shifted firmly"

Anywho...I think a performance converter will make a huge difference for your truck. I don not think anything more than a 4.56 is needed

madmann26

iTrader: (7)