gear ?
Elder User
Joined: Apr 2006
Posts: 894
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From: South Dakota
Originally Posted by Dave Sponaugle
Mr. Bob,
Watch the gear ratios on the ZF 5, one of the units has a low gear that is almost the same as the T19 low gear ratio. There were three different low gear ratios used.
Watch the gear ratios on the ZF 5, one of the units has a low gear that is almost the same as the T19 low gear ratio. There were three different low gear ratios used.
Originally Posted by CheaperJeeper
Quote:
<TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD class=alt2 style="BORDER-RIGHT: 1px inset; BORDER-TOP: 1px inset; BORDER-LEFT: 1px inset; BORDER-BOTTOM: 1px inset">Originally Posted by Dave7.3
Well dang cheaper! I'm shootin for power but also for mid 20's for mpg. Right now my current 17mpg isn't the greatest. I have done some testing and I can get up to 20 if I slow down to about 45mph (about 1700 rpms if I remember right). Sure I can rip your house off its foundation but it kills my mileage on the road soon as that needle goes past 2000 rpms (about 60mph). I wonder what my rpm would sit at with 3.73's? I'm told 3.73's would be ideal for a diesel...Sadly enough I still have the ol' DMF
</TD></TR></TBODY></TABLE>
WAAAAA! 17 mpg isn't good enough for my 3/4 ton truck, I want 20 mpg WAAAAA!
Just razzin' ya' man!
I'm happy to get 15 - when I can resist my urges and drive it gently enough....
<TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD class=alt2 style="BORDER-RIGHT: 1px inset; BORDER-TOP: 1px inset; BORDER-LEFT: 1px inset; BORDER-BOTTOM: 1px inset">Originally Posted by Dave7.3
Well dang cheaper! I'm shootin for power but also for mid 20's for mpg. Right now my current 17mpg isn't the greatest. I have done some testing and I can get up to 20 if I slow down to about 45mph (about 1700 rpms if I remember right). Sure I can rip your house off its foundation but it kills my mileage on the road soon as that needle goes past 2000 rpms (about 60mph). I wonder what my rpm would sit at with 3.73's? I'm told 3.73's would be ideal for a diesel...Sadly enough I still have the ol' DMF
</TD></TR></TBODY></TABLE>
WAAAAA! 17 mpg isn't good enough for my 3/4 ton truck, I want 20 mpg WAAAAA!
Just razzin' ya' man!
I'm happy to get 15 - when I can resist my urges and drive it gently enough....
Oh, when I'm hot roddin' the rig, that number drops a bit. 17mpg is just highway driving taking it easy at 60mph
Last edited by Dave7.3; Jan 8, 2007 at 01:08 PM.
Elder User
Joined: Dec 2006
Posts: 559
Likes: 4
From: On a farm.
Mine has 4.10s and a C-6 with 33s (285/75R-16) mounted. It also has a Banks kit. I did some 0-60 runs last year with my G-Tech and it cranked out 9.6 seconds. That's very good for a 6,400 pound old truck. In fact, I used to terrorize the first generation Power Strokes back in the early '90s. The first Cummins Dodges too! The Dodge guys were like 'Vette drivers... they get beat, they commit ritual suicide. There were a lot of mysterious suicides on Vail Pass and Eisenhower on I-70s back in the early '90s. Strangely, they were all guys drivinng Dodge trucks with Cummins engines! Those were the days! Well, at least until the second generation engines arrived.
The downside: Unfortunately, cruising at 65-70 I'm spinning at around 3,000 and getting 14-15mpg. That didn't matter too much when all I did was tow and cruise at 60mph (at 55 solo I used to get 17mpg plus). Anyway, I'll soon be installing 3.54s and hope to attain 17-18 mpg. And I'll run some G-Tech tests and pass the results along. Has anyone ever tried the 3.07:1 gears?
Jim Allen
1986 F-250HD 4x4 6.9L Powersmoke
1987 Vintage Banks Kit
The downside: Unfortunately, cruising at 65-70 I'm spinning at around 3,000 and getting 14-15mpg. That didn't matter too much when all I did was tow and cruise at 60mph (at 55 solo I used to get 17mpg plus). Anyway, I'll soon be installing 3.54s and hope to attain 17-18 mpg. And I'll run some G-Tech tests and pass the results along. Has anyone ever tried the 3.07:1 gears?
Jim Allen
1986 F-250HD 4x4 6.9L Powersmoke
1987 Vintage Banks Kit
Elder User
Joined: Apr 2006
Posts: 894
Likes: 0
From: South Dakota
Originally Posted by Jim Allen
Mine has 4.10s and a C-6 with 33s (285/75R-16) mounted. It also has a Banks kit. I did some 0-60 runs last year with my G-Tech and it cranked out 9.6 seconds. That's very good for a 6,400 pound old truck. In fact, I used to terrorize the first generation Power Strokes back in the early '90s. The first Cummins Dodges too! The Dodge guys were like 'Vette drivers... they get beat, they commit ritual suicide. There were a lot of mysterious suicides on Vail Pass and Eisenhower on I-70s back in the early '90s. Strangely, they were all guys drivinng Dodge trucks with Cummins engines! Those were the days! Well, at least until the second generation engines arrived.
The downside: Unfortunately, cruising at 65-70 I'm spinning at around 3,000 and getting 14-15mpg. That didn't matter too much when all I did was tow and cruise at 60mph (at 55 solo I used to get 17mpg plus). Anyway, I'll soon be installing 3.54s and hope to attain 17-18 mpg. And I'll run some G-Tech tests and pass the results along. Has anyone ever tried the 3.07:1 gears?
The downside: Unfortunately, cruising at 65-70 I'm spinning at around 3,000 and getting 14-15mpg. That didn't matter too much when all I did was tow and cruise at 60mph (at 55 solo I used to get 17mpg plus). Anyway, I'll soon be installing 3.54s and hope to attain 17-18 mpg. And I'll run some G-Tech tests and pass the results along. Has anyone ever tried the 3.07:1 gears?
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
The ZF 5 S42 was available with two ratios:
1 -- 4.65 -- 5.72
2 -- 2.60 -- 2.94
3 -- 1.53 -- 1.61
4 -- 1.00 -- 1.00
5 -- .077 -- .076
R -- 4.35 -- 5.24
The ZF 5 S 47 was available with three ratios,
1 -- 5.72 -- 5.08 -- 4.14
2 -- 2.94 -- 2.61 -- 2.37
3 -- 1.61 -- 1.53 -- 1.42
4 -- 1.00 -- 1.00 -- 1.00
5 -- 0.76 -- 0.77 -- 0.77
R -- 5.24 -- 4.66 -- 3.79
The T 19 was available with two different ratios
1 -- 5.11 -- 4.02
2 -- 3.03 -- 2.41
3 -- 1.79 -- 1.88
4 -- 1.00 -- 1.00
R -- I seem to have misplaced for right now.
The C 6 had one ratio
1 -- 2.46
2 -- 1.46
3 -- 1.00
R --
The E4OD had one ratio
1 -- 2.71
2 -- 1.54
3 -- 1.00
4 -- 0.71
R --
So as you can see, if you were looking for lower first gear ratios when you swap in a ZF5 to replace a T19, and you got the one with 4.14 gears, they are almost the same as a T 19 4.02.
1 -- 4.65 -- 5.72
2 -- 2.60 -- 2.94
3 -- 1.53 -- 1.61
4 -- 1.00 -- 1.00
5 -- .077 -- .076
R -- 4.35 -- 5.24
The ZF 5 S 47 was available with three ratios,
1 -- 5.72 -- 5.08 -- 4.14
2 -- 2.94 -- 2.61 -- 2.37
3 -- 1.61 -- 1.53 -- 1.42
4 -- 1.00 -- 1.00 -- 1.00
5 -- 0.76 -- 0.77 -- 0.77
R -- 5.24 -- 4.66 -- 3.79
The T 19 was available with two different ratios
1 -- 5.11 -- 4.02
2 -- 3.03 -- 2.41
3 -- 1.79 -- 1.88
4 -- 1.00 -- 1.00
R -- I seem to have misplaced for right now.
The C 6 had one ratio
1 -- 2.46
2 -- 1.46
3 -- 1.00
R --
The E4OD had one ratio
1 -- 2.71
2 -- 1.54
3 -- 1.00
4 -- 0.71
R --
So as you can see, if you were looking for lower first gear ratios when you swap in a ZF5 to replace a T19, and you got the one with 4.14 gears, they are almost the same as a T 19 4.02.
Thread Starter
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Senior User
Joined: Feb 2006
Posts: 123
Likes: 0
From: virginia
ok can i change the gearing in an automatic or is that what shift kits are for and how bout tha 4.56 gears front axle and back for the mud
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Posting Guru
Joined: Aug 2006
Posts: 2,175
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From: Kent WA
Originally Posted by Dave Sponaugle
Drivers side of the transmission below the shifter is where the plate with the ratios should be. Should be close to center on the height axis....
You list the 3 different ratios for the S47, but were all 3 of those available for the Diesel trucks, or only the one with the 4.14 1st gear? I'm going to go look at (and probably buy) that ZF & TC tomorrow, so the more info you can give me the better, Dave - and the sooner the better too since I'll be heading out first thing in the AM....
Posting Guru
Joined: Aug 2006
Posts: 2,175
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From: Kent WA
Originally Posted by crazymike
so just tell me im dead wrong if i am here. but isnt it possible to increase milage just a litte at least by puting a aftermarket od on after the tranny even tho i have an e40d?
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
knapikmichael,
4.56 gears would give you 73 MPH with 38" tires at 2100 RPM in overdrive.
That would be almost the same as 31" 235/85-16 stock tires with your 3.55 gears at 76 MPH at 2100 RPM.
cheaper,
The ratios are stamped on the plate.
The prices you quoted for the ZF 5 are about 1/2 of what I could get one here for, but I only price an S47, and I am afraid I would break the S47 case.
The S47 is the heavier duty transmission of the two.
Both are compatable with the 1345 and 1356 BW transfer cases.
Crazymike,
An E4OD transmission with 3.55 gears and 31" 235/85-16 tires with a Gear Vendors overdrive would be running 70 MPH at 1500 RPM. I would also worry about tranny heat running that slow using all the torque you have. That gear would be about useless if you are in the hills.
4.56 gears would give you 73 MPH with 38" tires at 2100 RPM in overdrive.
That would be almost the same as 31" 235/85-16 stock tires with your 3.55 gears at 76 MPH at 2100 RPM.
cheaper,
The ratios are stamped on the plate.
The prices you quoted for the ZF 5 are about 1/2 of what I could get one here for, but I only price an S47, and I am afraid I would break the S47 case.
The S47 is the heavier duty transmission of the two.
Both are compatable with the 1345 and 1356 BW transfer cases.
Crazymike,
An E4OD transmission with 3.55 gears and 31" 235/85-16 tires with a Gear Vendors overdrive would be running 70 MPH at 1500 RPM. I would also worry about tranny heat running that slow using all the torque you have. That gear would be about useless if you are in the hills.
Last edited by Dave Sponaugle; Jan 27, 2007 at 12:03 AM.
Posting Guru
Joined: Aug 2006
Posts: 2,175
Likes: 0
From: Kent WA
Originally Posted by Dave Sponaugle
knapikmichael,
4.56 gears would give you 73 MPH with 38" tires at 2100 RPM in overdrive.
That would be almost the same as 31" 235/85-16 stock tires with your 3.55 gears at 76 MPH at 2100 RPM.
cheaper,
The ratios are stamped on the plate.
The prices you quoted for the ZF 5 are about 1/2 of what I could get one here for, but I only price an S47, and I am afraid I would break the S47 case.
The S47 is the heavier duty transmission of the two.
Both are compatable with the 1345 and 1356 BW transfer cases....
4.56 gears would give you 73 MPH with 38" tires at 2100 RPM in overdrive.
That would be almost the same as 31" 235/85-16 stock tires with your 3.55 gears at 76 MPH at 2100 RPM.
cheaper,
The ratios are stamped on the plate.
The prices you quoted for the ZF 5 are about 1/2 of what I could get one here for, but I only price an S47, and I am afraid I would break the S47 case.
The S47 is the heavier duty transmission of the two.
Both are compatable with the 1345 and 1356 BW transfer cases....
What is the difference between the 1345 and 1356 transfer cases?
I'll bet the ZF & TC combo are longer than the T-19 and its TC, huh? Probably going to have to replace or customize my driveshaft....
More than worth it to get that 0.77:1 fifth gear ratio. That ought to