Question for guys who now around mpg

if there is anyone who  of someone or where on the internet that might be able to tell me what a 305 with a 700r4 would be on gas please let me know it would be greatly appreciated cause i live in a bigger city and putting more miles on it than before. but im not real sure if it is a 305 or 350 it was in a parts truck that ran drove but of course the parts truck is a ways away from me i am just needing to find out. i dont know anything a hp or torque. or if you know how to figure that out.  

It looks like your engine and trans combo had an EPA estimate of 17 city and 25 highway. Here is the link for all 1984 vehicles:

www.fueleconomy.gov/FEG/epadata/84guide.txt

Hope this helps.
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Frank the Crank
www.amberlightgarage.com

So, you're trying to figure out if you have a 305 or a 350 by the fuel economy you get in city driving?  I do believe in the 80's the block got stamped 5.7 or 5.0...