Gear Swap
#1
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Gear Swap
I HAVE THE 3:55 GEARS WITH 33 INCH TIRES. I OCCASIONALY PULL A 10,000 LB BOAT WITH A LOT OF DRAG. WOULD I BENEFIT BY CHANGING MY GEARS TO THE 3:73'S. WHEN JUST RIDING I WOULD THINK IT MAY IMPROVE FUEL MILEAGE WITH THE LARGER TIRES. I KNOW A 4:10 SWAP WOULD REALLY HELP ON THE PULLING, BUT I FIGURED I WOULD BE SAFER WITH THE 3:73'S SINCE I DIDN'T PLAN ON CHANGING THE FRONT ANY TIME SOON. ANY HELP? THANKS!! ALSO, IF I PUT A 3500 WHEEL CYLINDER IN THE REARS, WOULD IT IMPROVE THE REAR BRAKING ANY?
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The tall tires are taking away from your final drive, as you prolly know already so if you are going to change gears I would go with the 4.10 gears for towing and all round. You use a little more fuel and run a little higher rpm., but it's just money I see by your sig that you aren't afraid to spend a little so the fuel mpg is only a couple less per tank. you will also be a little faster everywhere except top end.
BTW would you please quit yelling at me. ( all caps)
BTW would you please quit yelling at me. ( all caps)
#3
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If you have a 4 wheel drive and plan on using it, you have to change gears in both differentials.
Otherwise you'll break a lot of expensive parts.
Going to 4.10 would help with the bigger tires, it would put the ratio back closer to what stock was with the stock sized tires.
I don't think changing the rear cylinders would help much in braking, as the fronts do most of the braking power.
phox
Also, I know you like to type in caps, but at least for me, it is harder to read.
Otherwise you'll break a lot of expensive parts.
Going to 4.10 would help with the bigger tires, it would put the ratio back closer to what stock was with the stock sized tires.
I don't think changing the rear cylinders would help much in braking, as the fronts do most of the braking power.
phox
Also, I know you like to type in caps, but at least for me, it is harder to read.
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THERE YOU GUYS GO AGAIN ON ME ABOUT ALL CAPS. IT IS EASIER FOR TO READ & TYPE. I CAN SEE VERY WELL TO DRIVE, BUT NOT UP CLOSE. I DON'T LIKE TO WEAR GLASSES, SO HERE WE ARE. REALLY, HOW CAN ALL CAPS BE ANY HARDER TO READ THAN all lower case?lolololol. OK, I KNOW THAT I WOULD NEED TO SWAP BOTH FRONT & REAR GEARS, THOUGH I HAVE RUN THEM MIXED MANY TIMES THROUGH THE YEARS. AS A PROFESSIONAL MUD-RACER,AT ONE TIME, WE ALWAYS SET THE FRONT RATIO'S UP FASTER. JUST DON'T DO IT ON THE HARD TOP. I THINK I WILL GO WITH THE 4.10'S. THAT WILL BE THE BEST SET-UP FOR ME. I FOUND A COUPLE OF 2002 REAR SPICER 70'S WITH 4:10'S THAT I AM GOING TO LOOK AT PURCHASING ONE TO GET THE REAR DISC BRAKES. WHAT YOU GUYS THINK? ARE THE DISCS ON THE 02' FRONTS ANY BETTER THAN THE 99'S? IF SO I WILL JUST SWAP THE WHOLE FRONT & BACK,ALONG WITH THE MASTER CYLINDER, PROPORTIONING VALVE,ETC. DOES THAT SOUND LIKE WHAT IT WILL TAKE? DO YOU THINK I WILL CREATE ANY ENGINE LIGHTS OR ECM PROBLEMS? THANKS FOR YOU FELLOWS HELP & I AIN'T YELLIN', JUST BLIND!
#5
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A '99 4wd already has the same rear wheel cylinders as the 3500. In a later year they went to the same brake width also, but yours are one inch narrower.
#6
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HAULIN DIXIE, HOW ABOUT THE FRONT BRAKES? READ MY POST AGAIN, YOU WILL SEE WHAT KIND OF INFO I WAS LOOKING FOR. THANKS A LOT FOR WHAT YOU HAVE ALREADY TOLD ME. DANNY
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I'm not sure if changing the fronts out will help, but I could be wrong--adding discs to the back will help though---
I do believe you can change out the 99 rear cylinders to the one ton--I was told this would be smart when I did it two years ago, so you need to verify that again as Haulin Dixie states otherwise--he may be right, but I was told different by Sam Peterson--of course my truck had the Dana 70 back then and that could be the reason it was doable for me---
I don't think you can get 3.73 gears--I couldn't 4 years ago it was 4.10s, but again time changes things so you may want to double check as they may be available now--chris
I do believe you can change out the 99 rear cylinders to the one ton--I was told this would be smart when I did it two years ago, so you need to verify that again as Haulin Dixie states otherwise--he may be right, but I was told different by Sam Peterson--of course my truck had the Dana 70 back then and that could be the reason it was doable for me---
I don't think you can get 3.73 gears--I couldn't 4 years ago it was 4.10s, but again time changes things so you may want to double check as they may be available now--chris
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#8
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I HAVE THE DANA 70 TOO. I AM PROBABLY JUST GONNA GO TO NAPA & SEE IF THE PART NUMBERS FRO THE WHEEL CYLINDERS ARE THE SAME OR DIFFERENT FOR THE 3500'S COMPARED TO THE 2500'S. IF DIFFERENT THAT IS WHAT I WILL TRY FOR NOW. AN AXLE SWAP IS COSTLY. THANKS !
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