1) Is there any difference between the van and Suburban as far as engine bay air extracting through the front wheel-wells or not ?
2) And could the transmission cooler be affected by a change to the airdam?
3) And does transmission cooling rely to any degree at all on airflow physically sweeping through the transmission tunnel, and directly across the aluminum case as you drive?
4) You may have a full-synthetic lubrication package already, which can handle pretty extreme temperatures, but you'd want to know.
