I like the idea of the low 1st gear just for ease of driving plus you can go to a 3.08 or 2.73 rear end and cruise easy on gas. I'm sure you're 350ho is way stronger than my 400. Is yours aluminum or iron case?
Iron case I believe. I had a 2.73 as well. Kind of brutal...eventually got a 3.42 that works great.
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__________________________________________________________