I went from the basically stock 273-904-7 1/4 in my dart to a bone stock (minus fender well headers) low compression 440-727 8.75 both setups had 2.76 gears.
It was gonna get a mild 340, but I fell into the big block and all the conversion parts for under $350 from the trans forward.


Car is a nose heavy pig with the big block, well was...havent driven it since all the fiberglass parts got put on. I will say the car is a riot even with the low(no)compression 440. If I had to do it over again....Id still go with the 440.