Re: what year extended van has biggest cargo space?
Well you only have 2 generations of "modern" Econolines. 75 - 91 and 92 up. I doubt that there is an appreciable difference in the interior room between the two.
The only way you are going to get more height is to get a high top like my ambulance. Even that isn't a whole lot more room.
Your other option is to get a box van. They are plentiful and sell cheap. The drawback is you give up being able to fit into parking spots.
1997 Ford F350 SRW 7.3L PSD
1985 Ford Ranger 2.3L 5 speed
1966 Mustang 200 I6, auto, 4 wheel disk, power brake retrofit, Corvette master.
Former vehicles, 1994 E350 7.3L IDI, 1985 International 1654 rollback, 6.9L IDI, (2) 1994 Ford E350 7.3L IDI, 1985 Ford F350 DRW 6.9L IDI, 1985 Ford F350 wrecker 6.9L IDI.
*dual ASE Master Certified, Automotive, Medium & Heavy trucks*
Owner / operator, Patriot Automotive, N Ridgeville OH