Gear change in F450?
#16
10-11-2011, 05:02 PM
#17
10-12-2011, 11:21 AM
R&Ps are available for these rear-ends. I have bought several from Precision Gear - Dana 80 Ring and Pinion Gear Sets and have had good luck with them. I changed my 90 F450 from 5:13s to 4:30s and still had enuff power to pull a 30' 5th wheel trailer.
What rpm do you run at 65-70 mph ?
Also thanks for the link. For some reason every site I went to showed only newer ford dana 80's.
EDIT: I just looked at site and it says 92 and up and I have a 91. Gonna have to look into the diff in the axle.
#18
10-12-2011, 01:20 PM
Are you running 16" tires and a e4od trans ? Where you have the same issue as me with speed to rpm ?
What rpm do you run at 65-70 mph ?
Also thanks for the link. For some reason every site I went to showed only newer ford dana 80's.
EDIT: I just looked at site and it says 92 and up and I have a 91. Gonna have to look into the diff in the axle.
What rpm do you run at 65-70 mph ?
Also thanks for the link. For some reason every site I went to showed only newer ford dana 80's.
EDIT: I just looked at site and it says 92 and up and I have a 91. Gonna have to look into the diff in the axle.
I was running a ZF5 and 235-85/R16 tires. Not sure why the site breaks down the applications like it does, but as far as I know, the rears are the same from 88-98. I think the change then was just a bearing change on the carrier, the gears still remain the same. Other application charts I find have the same Dana 80 for 88-04 F450
#19
07-10-2014, 10:11 PM
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thats what f450's are made for though.hauling,and hauling like they mean it.
those gears are good for that truck imho.i wouldn't change them.
if you find your not hauling the loads that require some low gears,perhaps you don't need an f450?
she's going to feel doggy with 4:10's with a real load on her.what are you hauling mostly? rock/dirt/gravel etc or? hows the truck used?
the cheapest way would be to score a whole rear axle i should think from the salvage yard.......using John's info,look for one with a set of 4.56 gears.any higher than that,then your hauling stuff that a pickup truck could haul,and a f450 is the incorrect rig to have imho.
f450's are not pickups keep in mind.if your getting behind the wheel to drive it anywhere without the intent to make $ with it,you bought the wrong rig or have loads of extra $ just to burn in fuel.
those gears are good for that truck imho.i wouldn't change them.
if you find your not hauling the loads that require some low gears,perhaps you don't need an f450?
she's going to feel doggy with 4:10's with a real load on her.what are you hauling mostly? rock/dirt/gravel etc or? hows the truck used?
the cheapest way would be to score a whole rear axle i should think from the salvage yard.......using John's info,look for one with a set of 4.56 gears.any higher than that,then your hauling stuff that a pickup truck could haul,and a f450 is the incorrect rig to have imho.
f450's are not pickups keep in mind.if your getting behind the wheel to drive it anywhere without the intent to make $ with it,you bought the wrong rig or have loads of extra $ just to burn in fuel.
however......without the turbo and intercooler and maxed fuel screw,then probably working with much less gearing might not have been so enjoyable either lol.
had i left mine n/a i might claim the 5.13's are just right for hauling heavy.since i don't tow heavy (just haul heavy) have her setup with a turbo/intercooler im looking into options as well.
temping it is to simply source axle code 72's 4.63 and simply trade the assembly as this is most often the cheapest.
but ideally id pick 4.30's.
i tell ya,loaded up heavy and being able to remain in OD uphill and even gain speed,is some impressive stuff with the 5.13's though.fun as that may be,she just doesn't need to rev so much.
Are you running 16" tires and a e4od trans ? Where you have the same issue as me with speed to rpm ?
What rpm do you run at 65-70 mph ?
Also thanks for the link. For some reason every site I went to showed only newer ford dana 80's.
EDIT: I just looked at site and it says 92 and up and I have a 91. Gonna have to look into the diff in the axle.
What rpm do you run at 65-70 mph ?
Also thanks for the link. For some reason every site I went to showed only newer ford dana 80's.
EDIT: I just looked at site and it says 92 and up and I have a 91. Gonna have to look into the diff in the axle.
When first introduced in the 1988 Ford Super Duty F-350, the Dana 80 Dual Rear Wheel (DRW) axle used 35 spline axle shafts. Effective with the 1990 model year, the axle spline size for Super Duty trucks was increased and the number of splines increased to 37. The 37 spline axle shaft was used on 1990-1991 F-350 and 1992-1998 F-450 models. The E-350 van chassis was available with an optional DRW Dana 80 axle with 35 spline axle shafts starting in 1996. all subsequent 1997-2000 Dana 80 equipped E-series 350 and 450 vans also used 35 spline axle shafts.
R&Ps are available for these rear-ends. I have bought several from Precision Gear - Dana 80 Ring and Pinion Gear Sets and have had good luck with them. I changed my 90 F450 from 5:13s to 4:30s and still had enuff power to pull a 30' 5th wheel trailer.
#20
10-07-2014, 01:20 PM
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axle code of this '97 f450 is G3 = 4.30 LS!
iv never heard of this.id love to score that axle.i wonder how rare they are.
i only knew about:
72 = 4.63
73 = 5.13
(both open diff's)
i just called a local trans and diff shop and got a quote to regear mine to 4.30 = $2,100! .....um no way.
http://www.ebay.com/itm/Ford-F-450-F-Super-Duty-XL-1997-ford-f-super-duty-f-450-dually-rack-truck-7-3-l-diesel-5-speed-10-/281457843093?forcerrptr=true&hash=item418831db95&item=281457843093&pt=US_Cars_Trucks
What rear end ratio is in my Ford , do I have positraction? - Drivetrain
iv never heard of this.id love to score that axle.i wonder how rare they are.
i only knew about:
72 = 4.63
73 = 5.13
(both open diff's)
i just called a local trans and diff shop and got a quote to regear mine to 4.30 = $2,100! .....um no way.
http://www.ebay.com/itm/Ford-F-450-F-Super-Duty-XL-1997-ford-f-super-duty-f-450-dually-rack-truck-7-3-l-diesel-5-speed-10-/281457843093?forcerrptr=true&hash=item418831db95&item=281457843093&pt=US_Cars_Trucks
What rear end ratio is in my Ford , do I have positraction? - Drivetrain
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