Actually I'm on the GT67 with the .81 A/R. I'll most likely be switching to a T70 or larger with a .96 A/R.

Base kit should spool by 3200rpm at worst if everything is setup right timing wise.

 

I have the base kit with an added on intercooler on a completely stock 5.3. Before the stall, there was a very small amount of lag, say 0-15mph, boost is all in by 2800 give or take 100rpm.

With a 2600 stall I can build at least 3-4 psi sitting still on the line. Spool up time really is not an issue now, when boost comes on its almost like a nitrous hit.

 

Doubt it

I have driven one

 

You can say that again!!

My Lightning that was running 13.2's (AZ heat) had no where NEAR the slam my Turbo setup has now (with Meth). It was certainly quicker to 20mph, but yes, the feeling with this Turbo setup is like a 150shot of Nitrous was just switched on and not turned off until you let up!

 

Ronn25, Do you know the specs of the turbo you have by chance? I wanted to look at some compressor maps for various turbos and compare them to the model you are using...

 

You can'[t really use the maps due to the heat energy difference because of it being a rear turbo i believe. Also have to know the exact A/R and maps for such a low A/R on a big turbo are harder to find. At least it was when I was looking.

 

Yes, but if I compared the map of the one that he is using to maps of some that I have access to, I might find one that is close in specs...

 

The Dodge model came with compressor A/R 0.60 and exhaust A/R 0.96 on a Garrett turbo. I think the GM setup is the same but could be wrong. Hope this is what you were looking for....