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66 Vette - expected gas mileage

4K views 3 replies 4 participants last post by  cor66vette 
#1 ·
I just acquired a 66 coupe, 327/300 with 336 rear end. I was wondering what I can expect for gas mileage, since I seem to be getting very poor mileage. I seem to remember my old 67 (327/350 hp) use to get over 20 mpg on the interstate and about 16 around town.
 
#4 ·
I fuel my 1966 327/350 with E-free 89, and throw in "104 Octane Boost". Runs all the time like it's a cool brisk Spring morning. Can't tell ya about the mpg because, "Frankly Charlotte, I don't give a damn". :SMILEY:
 
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