I use 6 ton stands, they hold the car up 24". When I want to go higher I put them on blocks 4"X16"X16", If I need to go higher I use 6"X16"X16". If the car isn't going to tip with the stands on the floor it isn't going to tip with the stands on the blocks. Probably be a lot easier to tip if the blocks were the same width as the stand. Problem with having the stands on blocks that wide is getting around between the blocks.
Eventually it gets down to who has the biggest blocks. I will show you high baby!
The square steel tube allows you to rest the car on those small support plates and keep the car stable. The wood structure can be built quite high. Just be sure to make base larger as you go higher. Also, consider tacking on 2 longer pieces on the bottom and it gives it more stability. I have one built with 4" x 4" as well.
I included some pics of the process I used to remove frame from my wagon. Notice how far I can place the wood stands away from car and it remains stable. I just pushed the frame out!
Last edited by Gus68; 10/22/1907:07 AM.
Engine Test Stand Playlist: https://www.youtube.com/playlist?list=PLwoxyUwptUcdqEb-o2ArqyiUaHW0G_C88 restoring my 1968 Firebird 400 HO convertible (Firedawg) 1965 Pontiac Catalina Safari Wagon 389 TriPower (Catwagon) 1999 JD AWS LX Lawn tractor 17hp (my daily driver) 2006 Sequoia 2017 Murano (wife's car) 202? Electric car 203? 68 Firebird /w electric engine 2007 Bayliner 175 runabout /w 3.0L Mercuiser__________________________________________________________