[texassquarebodies]

On 81-87 2wd chevy duallys, was a 4:10 the standard ratio or an option?
Was 3:73 the only other available from the factory? I know I can get different gears aftermarket. Just wanna know what came from the factory.

I have a 83' single cab 454/400th combo. No sticker in glove box for codes. I know GT4 is 3:73 and GT5 is 4:10. I'm going to pull the cover and count gears tomorrow.