Well... Talk about a long time coming.
The L33.5.3 had a lower end knock. Great. So that put things off for a while, had to find another engine. I was able to find an LQ9 with a damaged head fairly local so I picked it up.
So... the 243 heads got swapped onto the LQ9, which except for the aluminum block, makes it an LS2. Swapped the cam over as well.
After I got it all together, the mildly built 4L65E didn't like the combination of torque, a 5700lb truck, and my right foot. It lasted a total of 3 days before it started slipping in 2nd and 3rd gear.
So I yanked a 4L80E out of a 2000 one ton van and had it rebuilt with red eagle clutches, kolene steels, new solenoids, a 2200 stall speed converter, and Transgo HD2 shift kit.
And stuffed a big ass cooler in it.
This also necessitated some re pinning of the trans connector, addition of a second speed sensor, and a turbo 400 yoke, as the bigger output shaft on an 80E has 32 splines
The trans crossmember also had to be moved back because the mount is further back on the 80E
So after all that, and running all new 3/8" cooler lines, she's finally on the road again.
LS2 Suburban burnout video - YouTube