If there's ethanol in the fuel, yes. Not the whole bottle, just the measured dose.

 

Probably not a good idea with 35" tires....

 

Does not every grade or gas station have ethanol in it? Im confused.....

 

I may be stating the obvious but maybe not... install an engine vacuum gauge and as you drive try to keep that needle from going towards zero. The double pumper as already been mentioned was not really designed for economy but rather giving plenty of fuel. Your mpg can go up provided your motor still develops good cylinder pressure and is 'healthy'.

You can lean out your fuel delivery and advance your timing via a good dyno tune but having a dash mounted timing adjustment might also do the trick since a dyno tune might not consider the various loads and hills your vehicle is put under. With a lean tune, you can counter act detonation with water / methanol injection. Snow performance makes kit for carb feed engines... naturally your results will vary but these steps should help move things closer to double digits.

Consider changing out the thumper cam to an "RV" cam or even back to a stock grind for added economy. If you are hauling around another 500 lbs of stuff in your bed / toolbox, then lightening the load will help.

While I am certainly no 4x4 expert, I have read that sometimes the 4x4 drive train will not fully disengage and will cause extra drag, so you can check that out as well.

Not sure how massive your wheel tire combo is but the 35" tires with heavy rims could approach 100 lbs each and any reduction there will certainly help acceleration and stopping.

Good luck.

 

Just depends. Most fuel contains 10% ethanol. Some doesn't.

 

[quote=KIKKUP;12477897] With a lean tune, you can counter act detonation with water / methanol injection. Snow performance makes kit for carb feed engines... naturally your results will vary but these steps should help move things closer to double digits.

What is that exactly?

 

Short of swapping to a different gearset or swapping to an overdrive trans (which I don't think there's one out there for a 360 bolt pattern), you won't see significant gains.

I know that around here, the summer blends of gas have around 6% ethanol, while the winter blends that we are getting how have about 10-12%


Jameson

 

Ditch the carb, advance the timing and change your driving style. I could average 10 and well over 12 mpg highway in my dual quad 428.

Use the lowest grade octane you can get away with too.

Also, you still have the vacuum advance hooked up correct?

Josh

 

Doable with a short-shaft Tremec TKO-500 with a Quicktime bellhousing PNs QTI-RM-6056, -6057, or -6058.

... definitely not a low-buck option.

 

Yup still got the vacume advance. Dont think it works right.....



And as for HIO, you are correct with the POD system. Dont have that $$$$ right now. Even if i did i rather have AC, and hydro boost brakes or new suspension instead

 

[QUOTE=SuperDuty93;12478024]Here you go...try this

Ins and Outs of Water Methanol Injection (Snow Performance) | Performance Dyno Tuning in Rochester | Wilson Performance

 

[quote=KIKKUP;12478791]I kinda like the sound of all that. HAve you used it or plan on it? Or know anyone who has?

 

Some very good ideas in this thread for improving mileage. I really like the idea of advanced timing and water/meth injection when needed.

I just wanted to add to the fuel debate a bit. You really have to look around for fuel that doesn't contain ethanol. Gas producers have really latched on to the product as it is a really easy way to add octane to a blend at substantially reduced cost to other options. I was involved with a Shell Race Fuel testing program a couple of years ago and we were comparing a few Shell Race Fuels against a baseline 94 octane fuel that contained 10% ethanol as a way to gain octane. We tested 91 Octane VPower from the pump, 105 and 110 Shell race fuels in my rotary RX7 with 9.7:1 compression and in my race Cougar with 12.8:1 compression and the results were very interesting. We retuned the cars to take best advantage of each fuel by tuning the timing and fuels for the peak torque numbers, then pulling the timing back by 1 degree and going for the proper air/fuel ratio for each car on the widebands. We set them up on the dyno and then tested them on track later.

The absolute best mileage was got for the rotary was using the V Power standard Premium. The fuel usage dropped from 52 litres for 100 kms to 49 litres per 100 kms (4.92 mpg to 5.22 mpg) or almost a 6% improvement. In the Cougar we couldn't even use the V Power as the car would start to detonate so we went directly to the 105 and 110. We made the most power and got the best mileage from the 105. We were able to advance the timing and pull a bit of the fuel out. We actually lost a bit of power with the 110.

Long story short, approximately 10% ethanol gas blends add octane, but you loose mileage versus straight gas. Also, tune your car for the lowest octane level fuel your compression will handle as you will spend less per gallon, make decent power and get almost the best mileage you can. Buying premium, in most cases, is a waste of money unless your compression or carbon build up in your combustion chambers demands it.

Start the flame war, .

Eric

 

Look at a Gear Vendors OD. They have "kits" that would improve your Highway mileage quite a bit and if used in city driving correctly would help a little there as well. Gear Vendors Under/Overdrive Ford 4-Wheel Drive Manual Transmissions.

A lot of good suggestions here. The nice thing about the GV OD is that you "split" each gear. My experience is very positive. I have a 77 that I am building right now (among others LOL) that will definitely get a GV OD.

Check it out....

JMHO

 

I have an auto tranny But yes i did fint those OD units a week ago and they are out of the pricerange for now. This truck has drained the wallet for now so i cant do much but must do something. Im interested in the methanol thingy though. I assume this is the model i would need? I sent them an email yesterday and have yet to receive a response so maybe someone on here knows about these.
Snow Performance : Stage 2 Boost Cooler

Online video says these can gain 2-3 MPG which would be great on top of switching carbs