C
Chris H
I wanted to know so i would know what all i could do to my car without dipping to low in the mpg range, thank you.
What is the mpg rating of a stock 1968 pontiac firebird 400 motor?
wde3477
Member
Don't know that MPG values were posted for vehicles of that vintage. Suggest to be in the 12-14 MPG range, if you can keep your foot off the floorboard.
Goatman
GM/ASE service/body Tech
There is no way to calculate that as they diden't use MPG ratings until the 70s ..
and even at that you would have the effect of wear, and the change in fuel quality and lead content from the 60s to Now .. the most accurate way to find out would be to drive the car and measure the mileage as it is now .. even with ratings they are just estemates NOT actually what you can expect to get for any given vehicle..
and even at that you would have the effect of wear, and the change in fuel quality and lead content from the 60s to Now .. the most accurate way to find out would be to drive the car and measure the mileage as it is now .. even with ratings they are just estemates NOT actually what you can expect to get for any given vehicle..