My truck has 4.11 gears and i am going to chaNGE them to 3.73 in the front and 3.70 in the rear and i know i will have to change the carrier, What would be the best gears??

 

Moved to proper forum.

 

4.10 to 3.73 is not much of a jump. Are you sure you want to spend that kind of cash on such a small change?

Also, you want the ratios to be slightly different, but you want the higher gear (numerically lower) in the front, not the rear.

What do you mean by 'best gears'?

 

i am running 35's and i do not get any gas mileadge at all so, i am dropping down in tire size and in gear ratio. i want to change to 3.70 or 3.50 and run 33's. i am trying to decde between motive gears,richmond,precision,genuine gears!!that is what i am tryibg to find out, which gear set to use!!i know the front ratio and rear ratio is differant and i know the case in the Dana 44 will have to be changed as well.

 

If saving money is your goal, my opinion is that you're going about it the wrong way.

If I were you, I'd figure out how much this swap is going to cost you, including parts, labor, and tires, and figure that your gas mileage isn't going to change by more than 3 MPG at the very most.

Then see how long you have to drive the truck in order for the swap to pay for itself.

Higher gears don't always mean better gas mileage. If you have to floor it to get the truck to keep up with traffic (not that 33's with 3.50's will do that, but generally speaking), you're going to get low to middle single digit mileage.

4.10's with 35's is pretty close to ideal. Again, 3.50's or 3.73's with 33's is just as close. Do not expect your gas mileage to jump to 20 mpg. Expect to spend a ton of money on this and end up with pretty much the same mileage.

Then figure that with the money you've spent, you could have bought a civic that gets 35 mpg.

I'm not trying to tell you what to do, just making sure that you see the big picture.

 

i know what you are talking about but, even on short trips within 10 to 15 miles my truck still eats up the gas w/ a new rebuilt 351M/400 built to a 400, bored 30 over and crank turned 10.I moved from Tn to Ohio and just going from Tn to Ohio it took THREE FULL TANKS OF GAS, and i can make short trips as i was saying and it will take 1/4 of a tank!!

 

What kind of mileage are you getting now?

I'm assuming you don't have overdrive, and a C6 is going to be awful for gas mileage - much worse than a manual. Even with stock tires and gears, you will be lucky to hit 12 mpg on the highway.

 

im useing about a 1/4tank a day for the 20 mile round trip to school and back. i got 3.50s and 32s with a 390 and a C6. bassically these old truck suck gas.

 

it sounds like it would be better to put a 4 speed tranny in and pull the c6 out??

 

Here's a quick little calculator to check your ROI and how long it would take to break even on your investment.

http://martelbrothers.com/pages.php?pageid=88

 

I JUST FIGUERD OUT THAT MY TRUCK, I JUST DROVE 65 miles and used 1/2 tank at 6.5 MILES TO A GALLON.

 

You can't go by the gas gauge to check mileage. You know that, right?

 

i did not know that!you learn some thing new every day!! Tell me how i can figure out my mileadge??

 

I can't believe people don't know how to do this. Don't kids go to school anymore? What do they teach in there? This isn't a dig against you, Cowboy, just our lack-of-education system.

Here's what you do. Pick a gas station closeby and fill it up. Reset your trip odometer, or write down the mileage if you don't have one. Then drive it around until you need gas again. Fill it up at the same station, using the same pump if you can for better results. Then divide the number of miles you drove by the number of gallons of gas you just bought.

That will tell you what your mileage was on that tank. Do it a couple times and you'll get a better idea of what your mileage is.

 

i sure will, thanks for telling me.