Ended up taking this on a 1,200 mile road trip this past week. Averaged just over 19 mpg running 75-85 mph most of the trip with the cruise set on open road. If you do not watch your right foot it...

G-vans are easy to get the engine out of compared to the Express vans.

I used Transdapt mounts that moved the engine forward around 1" so that the front of the engine was in stock location. This allowed a 4L80E to bolt right into the Th375 aka 3L80 stock crossmember.

Just thought I would update on this. Finally got this up and running although I have some work still left to iron out. It has been on the back burner.

Still need to build an actual exhaust...

I refuse to pay photobuckets fees so the pictures won't be back.

The 6.0L engine and 4L80E are both sitting in it. I have it mostly mocked up. I have to pull the engine swap the cam and heads as...

The 6.0L is in.

http://i243.photobucket.com/albums/ff172/Fast355_album/20170716_214157_zpshfafzbvj.jpg

http://i243.photobucket.com/albums/ff172/Fast355_album/20170718_204726_zpshbp7xyxt.jpg
...

My brother and I are building up a 1987 G20 Van for him. The little 104K mile 305 TBI had to go. Stock it was pretty gutless. It is getting a 2007 LQ4 6.0L complete with DBW swapped into it. It may...