Two trucks same setup, but big difference ? - Page 2 - Competition Diesel.Com

Rollin Coal · 12-24-2009, 08:15 AM

Quote:

Originally Posted by haloman

Not going too. From all the source I have looked at 3.08s are only in the Dana 71. It has a special housing.

3.07's came in first gens, they just stopped making them.

haloman · 12-24-2009, 08:17 AM

Quote:

Originally Posted by Rollin Coal

3.07's came in first gens, they just stopped making them.

Agreed on both accounts. It was in a special axle tho. Dana 71.

Rollin Coal · 12-24-2009, 08:22 AM

dodge used the same dana 70 from 1984 until 2009. dana 70-u, 32 spline axle small pinion.

gear set from a first gen would work in a 2nd gen dana 70.

haloman · 12-24-2009, 08:28 AM

Quote:

Originally Posted by Rollin Coal

dodge used the same dana 70 from 1984 until 2009. dana 70-u, 32 spline axle small pinion.

gear set from a first gen would work in a 2nd gen dana 70.

Everything I have read has said no, which is why I never tried it. From what I read the 3.07 R&P will not fit in the standard 70 housing.

01CumminsSport · 12-24-2009, 08:41 AM

the 1st gens with the .08 gear ration has the dana 60-f front axle and a dana 71 rear i had 3 sets of these axles and i have got rid of them because the carrier in the diff is smaller, the only other gear set you can get for these axles is a 4.10 but you need a special carrier to do so.
So no you cant put the 3.08 in a standard dana 70

*Sledpuller* · 12-24-2009, 09:16 AM

Quote:

Originally Posted by YOUNG GUNS15

how can i tell if i have either 4.10 or lower? the under hood sticker is gone and the data plates are missing from the diffs? cruising at 65 im just under 2k rpm

sorry for the derail

Mark the drive shaft, rotate your tire 10 times and count the rotations of the driveshaft.

That will get you real close.

cumminslow · 12-24-2009, 12:00 PM

the driver of the faster truck has a heavier foot thats all

YOUNG GUNS15 · 12-24-2009, 01:05 PM

hmm, by the responses looks like i have 3.55 gears, i did 85 on the freeway with the stock GV springs in there.

sorry for the dumb Q's

Forrest Nearing · 12-24-2009, 01:14 PM

I learned this lesson a LONG time ago messing with turbo pinto motors in light cars... you put a 4.30 gear in the thing, and you never get a load on it before it's time to shift... put a 3.08-3.27 gear in it, and WOW!

(yes, Charles, I realize with a bigger turbo and more RPM it would have wanted a little more gear! (always gotta cover my bases w/ you

)

daithi2 · 12-25-2009, 08:32 AM

Quote:

Originally Posted by 01CumminsSport

the 1st gens with the .08 gear ration has the dana 60-f front axle and a dana 71 rear i had 3 sets of these axles and i have got rid of them because the carrier in the diff is smaller, the only other gear set you can get for these axles is a 4.10 but you need a special carrier to do so.
So no you cant put the 3.08 in a standard dana 70

my truck is stamped d70 and has 3.07's.

lightsOUT · 12-25-2009, 09:01 AM

Quote:

Originally Posted by LAmiller

I used to have 4.10's and I could hit 106mph... and with stock tires I would run 2250RPM @70mph.

Lavon

thats cause yours is a vp. im pretty sure he is refering to a 12v. i have been stock 12v's with 4:10s that will not go over 80/85 mph.

AsTroSS · 12-25-2009, 09:17 AM

How I can gain more low end torque? (mine is 4.1)

Bigger wheels?
Tighter converter?
Twins?

Tubos,timing and tuning do not help, becasue we have swap tubos from one truck to other adn allways result is the same

mondtster · 12-26-2009, 12:23 PM

Quote:

Originally Posted by AsTroSS

How I can gain more low end torque? (mine is 4.1)

Bigger wheels?
Tighter converter?
Twins?

Tubos,timing and tuning do not help, becasue we have swap tubos from one truck to other adn allways result is the same

If a regear is out of the question, I'd consider taller tires.

I don't know what converter you currently have, but you don't want to go too tight. As a general rule of thumb, when you put a stator in a converter that does not redirect as much fluid (which will tighten up the converter) the torque multiplication of the converter will go down. I think most people will find that they like the feel of a slightly looser converter over a tighter one given the opportunity to drive both. Within reason of course.

01CumminsSport · 12-26-2009, 07:54 PM

Quote:

Originally Posted by daithi2

my truck is stamped d70 and has 3.07's.

i might be wrong with the d70 d71 but i do know the carriers are different

Lance · 12-28-2009, 04:46 AM

I run about 14 flat with 32 inch tires and with my 41s on, it only gets to about a 15.3 in the 1/4 mile. same exact trap speed though.

therabbittree · 01-31-2010, 02:28 PM

I have two trucks with the 3.07 gears.. they are different housings and carriers..the sticker still shows dana 60 and 70 etc.. but they are 61 and 71.. do a bunch of looking into it..1stgen .org, tdr, dtr, etc etc even the gear companies will explain that... i wish they made 3.00 gears for a superduty dana 60 i'd be running them in my excursion..its a nice setup..i don't use od till 55 mph..then 1500 is about 65 -70 etc...nice on the highway and towing at 1800 in 4th direct is alot easier on the trans etc...
I've thought of cutting a first gen housing and making a drivers side drop for the superduty... oh well

12-24-2009, 08:41 AM	#25
01CumminsSport Name: 01CumminsSport Title: CapeCodDieselPerformance Status: Not Here Join Date: Aug 2008 Location: Cape Cod Member`s Gallery Posts: 508	the 1st gens with the .08 gear ration has the dana 60-f front axle and a dana 71 rear i had 3 sets of these axles and i have got rid of them because the carrier in the diff is smaller, the only other gear set you can get for these axles is a 4.10 but you need a special carrier to do so. So no you cant put the 3.08 in a standard dana 70 __________________ 01 ctd, edge comp, redline, meth, FI s472w/90 housing, stage 2 monster pump with hurricane 2 6x.013's and a few other goodies to make a fun daily driven street truck

12-24-2009, 01:14 PM	#29
Forrest Nearing Name: Forrest Nearing Title: Diesel Pro Status: Not Here Join Date: Oct 2006 Member`s Gallery Posts: 9,896	I learned this lesson a LONG time ago messing with turbo pinto motors in light cars... you put a 4.30 gear in the thing, and you never get a load on it before it's time to shift... put a 3.08-3.27 gear in it, and WOW! (yes, Charles, I realize with a bigger turbo and more RPM it would have wanted a little more gear! (always gotta cover my bases w/ you ) __________________ '06 Flame Red Mega Cab SLT 4x4 auto HotRodDiesels built tranny Smarty, Fleece stand-alone VNT, spark plug conversion, etc.

12-25-2009, 09:17 AM	#32
AsTroSS Name: AsTroSS Title: problems start @80 psi Status: Not Here Join Date: May 2006 Location: Estonia, Europe Member`s Gallery Posts: 2,488	How I can gain more low end torque? (mine is 4.1) Bigger wheels? Tighter converter? Twins? Tubos,timing and tuning do not help, becasue we have swap tubos from one truck to other adn allways result is the same __________________ Ram 2500 '98 QC 12V Cummis 4x4 automatic --->project: T-25 , still too slow 13.0 Ram 3500 '94 12V Cummins , dump truck-> project :T-35 Golf V'05 -TDI for wife VW Transporter '07 - TDI

12-28-2009, 04:46 AM	#35
Lance Name: Lance Title: Loner Status: Not Here Join Date: Nov 2007 Location: Albuquerque Member`s Gallery Posts: 229	I run about 14 flat with 32 inch tires and with my 41s on, it only gets to about a 15.3 in the 1/4 mile. same exact trap speed though. __________________ 95 2500, 100 plate, 3800 washer mod, BHAF, Auto meter, TC lockup switch, Goerend trans, New Era 435s, water/meth, 6 inch lift, DT track bar, Irok Radial 41s with Staun beadlocks, Atlas springs, 4.10s, Detroit in rear, Lock right in the front

01-31-2010, 02:28 PM	#36
therabbittree Name: therabbittree Title: Diesel Enthusiast Status: Not Here Join Date: Nov 2007 Location: LaGrangeville, NY Member`s Gallery Posts: 145	I have two trucks with the 3.07 gears.. they are different housings and carriers..the sticker still shows dana 60 and 70 etc.. but they are 61 and 71.. do a bunch of looking into it..1stgen .org, tdr, dtr, etc etc even the gear companies will explain that... i wish they made 3.00 gears for a superduty dana 60 i'd be running them in my excursion..its a nice setup..i don't use od till 55 mph..then 1500 is about 65 -70 etc...nice on the highway and towing at 1800 in 4th direct is alot easier on the trans etc... I've thought of cutting a first gen housing and making a drivers side drop for the superduty... oh well __________________ 2000 Excursion XLT 4x4, P Pump 12V, G56 6 spd, SB FE clutch, guages, hx50/ht3b twins, dana 60, exbrake http://www.turbodieselregister.com/f...sion-redo.html http://picasaweb.google.com/therabbittree/Excursion02#

12-24-2009, 08:22 AM	#23
Rollin Coal Name: Rollin Coal Title: Fabricator Status: Not Here Join Date: Oct 2008 Member`s Gallery Posts: 2,235	dodge used the same dana 70 from 1984 until 2009. dana 70-u, 32 spline axle small pinion. gear set from a first gen would work in a 2nd gen dana 70.

12-24-2009, 12:00 PM	#27
cumminslow Name: cumminslow Title: Diesel Enthusiast Status: Not Here Join Date: Nov 2008 Location: at the shop Member`s Gallery Posts: 198	the driver of the faster truck has a heavier foot thats all

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