20.6 MPG

[JeffBoudah]

This is what my car managed to do with all my mods and the fact that it was at 75-80mph too. this was after a 500mile road trip. its the first time i have gone more than like 75 miles on the highway since my gears were dont back in december. I am quite happy with that. i still get like 16-17 in town also.

[Grand Marquis GT]

20.6 MPG on the highway, with 4.10s?

Sounds like I need to sell the 3.73s I got lined up in exchange for 4.10s

[LTDMan83]

Nice mpg,I hope to still get around 15-20mpg after I swap in the exploder motor.

[turbo2256b]

Have you checked your speedo against a GPS?

[Freshmeat]

Nice mpg,I hope to still get around 15-20mpg after I swap in the exploder motor.

I'm averaging 16 running the fuck out of my P motor swap with blown header gaskets.

[grandpaslincoln]

I'm getting 14-16 right now, need to ditch the 2bbl and get something with a little more restraint lol

Congrats on the 20.6!!!

[JeffBoudah]

Have you checked your speedo against a GPS?

Actually yes, my speedo is dead nuts.

[Freshmeat]

In my opinion, dead nuts are a tragic occurence. Are you saying your speedometer is bad?

[gadget73]

15.5 on PA non-oxygenated Hess gas. 14 on NJ gas.

[yucatec]

Dear Panthers,
My stock, tuned (rebuilt by Nascar rebuilder 30 k ago) 89/91 colony park (3.73 with traclock) pulls 20-23 on the Interstate at 5 mph (GPS) over the limit. Going through West Virginia (mtns, no OD) or in higher elevations (Dakotas) less good. I'd like to put dual exhausts on for better performance/mileage.
Donald McCaig

[JeffBoudah]

In my opinion, dead nuts are a tragic occurence. Are you saying your speedometer is bad?

dead nuts, as in accurate.

[Tiggie]

My car:

45mph (D) - 12MPG
45mph (OD) - 14MPG
55mph (D) - 11MPG
55mph (OD) - 16MPG
65mph (D) - 9MPG
65mph (OD) - 22MPG (Best, Average is 20.5-21)

Thats stock except for stock-style duals, with 3.08's. And it's carb'd. Maybe I'll grab some 3.55's or 3.73's so I can get 22MPG at 55MPH, which is where I drive most.

On the highway in OD, 4.10's are pretty much the same as 2.73's in D.

I'd say you're doing pretty darn good with your mods and MPG.

[91 LTD]

Not to be a dick or anything but what was the tailwind?

JK, Im jealous and hope I see 20mpg when I get my car fixed. Thats better than a lot of the cars on the road today.

[turbo2256b]

mr land yacht if he gets it all dialed in properly has the potential to get some killer gas MPG.

Havet heard from him lately.

[Freshmeat]

I was at the yard looking for Tearus fans, but no luck. What years had the dual fans...? Or was it just a dual stage single fan?

They had a Mark VIII last time I was there, but it disappeared. People don't know how good some of these parts can be!!