75-76 Aluminum 833 4 speed Overdrive trans questions ?

I'm saving parts to build an economy package engine in case gas gets and stays crazy. I have a stock bore 273 (68), an Edelbrock 318 Street master, and a 400 cfm AFB. I have a 2.94
8 3/4 carrier, in conjunction with the .79 OD ratio should be about a 2.30 final ratio
I don’t think you would have any issues, I’d be curious to see the MPG you get from that combo. 25 mpg highway should be cake.