Quote Originally Posted by JeepsAndGuns View Post
You are going to love the hydroboost. I have converted my 79 cherokee and 93 wrangler and I will NEVER go back to a vac booster.
I KNOW!!!! I have driven these with Hydroboost and don't understand why GM cheaped out so much on these Express vans as even the same vintage Astro/Safari vans came with Hydroboost.

Then again the brainiac that is truly to blame is the idiot that felt the need to offer a 1/2 ton van as an upfitter package for a conversion van. Should have been a 2500 series as a minimum with all the extra stuff it is carrying around. The weight killed the 4L60E TWICE in 78k miles (4L65E spec rebuild went in at 38K) and the 8.5" died shortly after the 4L80E went in. Then again it gets driven a bit hard and was not exactly stock for the 4L65E spec trans and the 8.5s death. As big and heavy as these vans are, NONE of them should have had the 8.5 or the 4L60E for that matter.