Print Page - not sure where else to put it

Title: not sure where else to put it - M.P.G. question
Post by: shameless on June 17, 2010, 09:24:51 AM

my set up is an 85 T-bird turbocoupe, with a 65 289 HIPO/c4 auto implant, and as far as I know a factory rear end, I think its the 7.8 rear, I may be wrong. it has headers with glass packs, not cat. converter. no a/c but I might put it back on. no power steering but would like to have that back. Other than all that, the car itself is stock.

I'm just curious what a reasonable fuel mileage expectation would be for this car with either a 2br. carb. or a 4 br. carb.

any ideas.

Title: not sure where else to put it - M.P.G. question
Post by: mcb82gt on June 17, 2010, 11:23:17 AM

Holy , who knows. I dont know anything about C4's, I think they are 1:1, no overdrive. On the 7.5 rear end, I think they had 3:45 gears.

Mileage......guess 13 town, 18 hwy?????

Title: not sure where else to put it - M.P.G. question
Post by: shameless on June 17, 2010, 11:38:51 AM

Quote from: mcb82gt;325795

Mileage......guess 13 town, 18 hwy?????

if that were so, that'd be awesome actually. lol

Title: not sure where else to put it - M.P.G. question
Post by: TurboCoupe50 on June 17, 2010, 04:53:03 PM

A C4 doesn't have a lockup converter, which puts it in to play at all times... With the 3.45, highway RPMs will be similar to having 3.91 gears, simile if you get any where near 18 MPG highway(it's possible)...

Title: not sure where else to put it - M.P.G. question
Post by: thunderjet302 on June 18, 2010, 01:35:57 PM

Too bad you can't run an AOD. If I drive normally I get about 15 city/23 highway with my mods.

Title: not sure where else to put it - M.P.G. question
Post by: bhazard on June 18, 2010, 05:37:14 PM

I wouldn't say much more than 15 MPG. Drop the 2.3 back in if you're worried about it. 30 MPG is easy with those.

Title: not sure where else to put it - M.P.G. question
Post by: Haystack on June 19, 2010, 04:01:03 AM

It going to depend on what type of carb, how its tuned and how you drive.

Title: not sure where else to put it - M.P.G. question
Post by: shameless on June 19, 2010, 10:14:19 AM

I'm not interested in getting great MPG, I just want to be able to get enough to be able to drive it every day. anthing above 12 or 13 is groovy!

Title: not sure where else to put it - M.P.G. question
Post by: bhazard on June 19, 2010, 10:16:14 AM

I personally wouldnt drive a car everyday unless it got at least 25 mpg. Of course Im used to ~40 mpg.

I could barely afford to feed my TC.

Title: not sure where else to put it - M.P.G. question
Post by: shameless on June 19, 2010, 10:48:03 AM

I'm used to an explorer sport, that got 15mpg no matter how I drove it. so a car that does 12 - 14 mpg isnt a stretch for me. lol plus I dont have any car payments so that helps

Title: not sure where else to put it - M.P.G. question
Post by: bhazard on June 19, 2010, 10:59:13 AM

But but think of all those hydrocarbons and other pollutants. And think of all that fossil fuel youre using. You should totally consider buying a toyota prius. They are the best car ever made. They dont pollute at all. Theyre so green. If you own a prius, youre in touch with nature.

Hahaha just kidding. If you can afford the fun go for it.

But do remember how much money youre putting in the pockets of those evil evil middle eastern oil companies. :P

Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: shameless on June 17, 2010, 09:24:51 AM