small block strokers

[ir3333]

just curious...what kind of mileage are you getting with your 450 - 500 hp
strokers?
the 408/416 is a build i've been considering for some time

 

[michformulaS]

9 to 12 mpg depending on where and how I am driving. I definitely don't drive it trying to get better mileage. That's with 3.23 gears.

 

[mini]

I wonder if anyone is using a new EFI setup and getting much better MPG's. I would like to find out as it would be a future upgrade for me.

 

[Radarsonwheels]

I got 8mpg with my 408 demon. 4.10 gears, 750dp, MP 557 cam. I am not shy with the loud pedal. Im getting porting and a new cam so we'll see how it does after that.

Restricting the IFRs in the holley was crucial to cruise afr

 

[moper]

Customer's car - pump gas 422, 460hp or so based on ET and weight. Has gotten 17mpg with 3.23s in his Challenger but normally is around 14 with mixed driving.

 

[Mad Dart]

2 Gallons to the mile with mine! Lol :burnout:

 

[BrianT]

I'm going to measure mine in SMILES to the gallon. Gas mileage be damned!!

 

[Treblig]

That's why I put a 2004R into my barracuda before I build the 390 stroker. This way I get much better gas mileage right off the bat with 3.73 gears!! I should be cruising at about 2200/2300 RPM.

treblig

 

[cannucky]

I get the same or better than a friends brand new Silverado when cruising on the highway , I usually measure it like a Semi in time , the last 3 years when traveling cross country I got 2.5 hours per 40 litres no matter what speed I travel at so I generally try to take advantage of that , this year I've gone to a bigger tire so hopefully I will get closer to 3 hour per 40 litres , that all translates to @ 10.5 gallons per 2.5 hrs = 4.2 gallons per hour divided into the speed of somewhere between 55 and 80 mph or 90-128 kmh , hoping to make that 3.5 into the speed with the new wheels and tires . confusing enough for ya eh ! LOL .

 

[Mad Dart]

I'm going to measure mine in SMILES to the gallon. Gas mileage be damned!!

There you go!

 

[Radarsonwheels]

Its not all about final gear ratio- I have 4.10s but they're hooked up to an iron 833 OD- I cruise the highway 70mph around 2000rpm. Third gear 1:1 redlines at 140mph so it's a good passing gear ;)

I still wind up 2nd like a crazy person every chance I get- why not! I didn't build the car to run good mpg

 

[273]

I think you'll find for a certain amount of performance you'll get similar mileage no matter if you go with 340 440 or 540 or anything inbetween.