we got any tech inspectors on here?

[rick lester]

Let me be the first to welcome you here. This is a great site to ask questions. Now to answer your question, first, no I am not a tech inspecter. Two, if your 67 with 232 six came with a 4 speed from the factory, then yes you can use an aftermarket 4 speed manual trans. If it didn't come with a 4 speed then no you can't use a aftermarket 4 speed. Basically what ever came factory with your engine/body combo is that # of gears you must use. 2,3,or 4 speed, auto or manual. Overdrive does not count as a gear. I am putting together a 91 S-10 4.3 with a stick. Factory trans is a 5 speed, 4 with overdrive, but gotta use a 4 speed. If yours is a 3 speed with overdrive then you gotta use a 3 speed trans.aftermarket such as jerico, g-force, richmond,etc.as long as it is NOT a clutchless set-up. STOCKERS RULE!!!!!!!!!!!!!!!!!!!!!!! Rick.