how much would the annual fuel cost be if i drove a 1967 camaro for one year?
5 to 7 MPG times the expected number of miles you think you'll drive. (According to several car magazine reviews of that car, the 67 Camaro gor between 5 and 7 MPG, one of the worst cars of that era for fuel economy.)
I disagree. I had a 67 Firebird (same thing) with a hot 350 chevy engine and I got 14mpg in mountain driving even with a heavy foot. With a stock 350 you should get 18 on the highway and maybe 12 or so in the city if you drive reasonably.
From what I've read it's the I6 w/3 peed that got the abysmal gas mileage. Not having an O/D can really affect your MPG rating too.
I had a 67 Chevy station wagon with the 250 6 and a 3 speed with OD. It got 17 cruising at 70 to 75. My Firebird originally had the OHC 6 with a 4 barrel carb plus a 2 speed auto transmission and it got 20+ out on the highway. A friend with the same car with a 3 speed and a single barrel carb got 25 mpg.