This thread is for the general discussion of the Item ‘72 CST K5 Gen 5 Swap. Please add to the discussion here.


Yes, completely stock. There will be some tweaks to the tune but that’s it.Keeping the engine bone stock?
You’re correct. That’s just a pic I have on my phone. His is buried in the garage but 8l90 with the t-case on it. We will be running a np241c not the bw electric that came on it.What is that trans? Looks like my 6l90E 2wd.
Yessir. Those short stands are my old norcos but yours are still safely chillin.Is this D's orange one? I'm jealous. Love the jack stands![]()

Fugly it can't be THAT bad. What're youZ planning to control that 8l90 with ? I ask because my 16 silverAdo has one, and gm programmed tcu for the AFM and caused lots of problems with functionality, until i used a tune to correct it.Detail everything. So I can just copy along.
I ordered the 4wd to 2wd conversion from your Wicked Wrench for my 8L90E. Should make Fugly a nice cruiser.
What was the donor vehicle? (Just curious) a small tune is all i did, and raised mine abt 40hp but more importantly corrected 8l90 shift issues the 2016+ silverado (burbs, suvs ?) were having.Stock computer. Engine is staying stock, with a little bit of tune.
ReTonkulous
This thread is for the general discussion of the Item The Fugly Duckling. Please add to the discussion here.ck5.com
I guess the 6l90 didn't have those issues ?Stock computer. Engine is staying stock, with a little bit of tune.
ReTonkulous
This thread is for the general discussion of the Item The Fugly Duckling. Please add to the discussion here.ck5.com
I am so jealous that you are moving forward on your LT swap. I am temporarily unemployed and not able to spend funds on mine so I am stuck with my L8T sitting on the stand and 6L90E on the floor of the garage. I will definitely be paying close attention to your swap.Got her stripped down and ready for her first test fit.
View attachment 468136