I'm about to get a 86 caprice with a stock 305 and i was wondering what kind of gas millage would i get if i drive like a normal human and what could i do to upgrade the mpg's?

 

I used to have an 83 with a 4bbl and it would get a little over 20mpg on the highway. I can't remember in town. I drove it like a granny because it had a 700r and I was afraid it was going out. I had an 84 impala with a 3.8v6 and it got like 30+ with a vacuum leak lol. As for increasing fuel economy, proper maintainance and tune.

 

Ok what about if i put some flowmasters on there and got the cat cut off will that make my mpg go down, up, or stay the same?

 

My stock 305 with all of the emissions equipment intact got 25+ highway and 20 commuting, even though the torque converter lock-up didn't work at the time.

 

What do you mean all of the emissions intact?

 

Cat, EGR, A.I.R., computer controls, etc.

 

Well i would only cut the cat off for my exhaust. I was just wondering because i found a 86 caprice for 650 and they said it runs great but it just need a new carb. Think thats a good deal?

 

Are you asking what kind of gas mileage the Caprice would get, or what kind of mileage it would get in a 3rd gen?

The Caprice is heavier and less aerodynamic, figure on 2-5 MPG less than the same engine would get in a 3rd gen.

 

yea I've got an 87 caprice with the electronic controlled 4 bbl. I'm thinking about throwing that crap away and going old school. the blue sensor on the top drivers side is unplugged because if i plug it in and hit the gas the car stalls out. I get terrible milage, probably as a result. I took off all of my emissions because most of them were causing vacuum leaks or i just didn't like them *cough*AIR*cough*.

EDIT: here's the cardomain link for it. http://www.cardomain.com/ride/3335883

 

Well ok. Ill keep you guys posted. Ill put up some pics if i get it.