Gear ratio
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Elder User
Joined: Jul 2006
Posts: 621
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From: Near the ocean
Gear ratio
Hey Dave S. will you be kind enough to "fire up old Betsy" and plug in the following data? I would like to know what my diff gear ratio is.
E-40D tranny in OD
235/85R16 "sneakers"
2000 RPM @ 62 MPH
Thankyou Dave, appreciate it.
Tom
E-40D tranny in OD
235/85R16 "sneakers"
2000 RPM @ 62 MPH
Thankyou Dave, appreciate it.
Tom
Elder User
Joined: Jan 2008
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From: Guymon
Not to pry, but he just ran mine and it was a 4.10, same tires, and my speed at 2000 rpm is right at 63mph. Do you like that banks turbo? What is your fuel milage after you installed it? I was wanting to put a higher gear in mine like a 3.55 to see where the fuel goes after I install it. Thanks
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
Most of the tire sizes I have in my computer are for mud tires which are usually a little larger diameter than all terrain or straight tread tires.
Using the 31.72" mud tire diameter (Bridgestone RMT), 2000 RPM with 4.10 gears and an E4OD in overdrive works out to 64.83 MPH.
Using the 31.72" mud tire diameter (Bridgestone RMT), 2000 RPM with 4.10 gears and an E4OD in overdrive works out to 64.83 MPH.
Laughing Gas
Joined: Aug 2007
Posts: 1,132
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From: Baldwin, ND
If you guys have the time this will give you the info you seek.....
http://www.accuautoparts.com/calculatorfin.jsp
Thad
http://www.accuautoparts.com/calculatorfin.jsp
Thad
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Elder User
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From: Near the ocean
Originally Posted by FORD MEGA CAB!!!
Not to pry, but he just ran mine and it was a 4.10, same tires, and my speed at 2000 rpm is right at 63mph. Do you like that banks turbo? What is your fuel milage after you installed it? I was wanting to put a higher gear in mine like a 3.55 to see where the fuel goes after I install it. Thanks
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Elder User
Joined: Jul 2006
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From: Near the ocean
Originally Posted by Dave Sponaugle
Most of the tire sizes I have in my computer are for mud tires which are usually a little larger diameter than all terrain or straight tread tires.
Using the 31.72" mud tire diameter (Bridgestone RMT), 2000 RPM with 4.10 gears and an E4OD in overdrive works out to 64.83 MPH.
Using the 31.72" mud tire diameter (Bridgestone RMT), 2000 RPM with 4.10 gears and an E4OD in overdrive works out to 64.83 MPH.
Those were some interesting comments concerning increasing the air intake to our engines.(Leak in CDR post) I thought you would have some comment to make concerning the statement about increasing intake makes no difference with a turbo. I thought it did I believe turbo or not, if you can help the air get in the engine, you are that much ahead. You run an ATS turbo and we both built the same ram air setup (I copied you) That was also an interesting statement concerning the installation of a K&N filter and how it reacts with the CDR valve. I would like to hear more on that subject as I have a K&N on my rig. Any further input from anyone would be greatly appreciated. Thankyou for the info Dave.
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
The results I see with a ram air to my turbo are a bit different than everyone else here will have.
Remember mine is not exactly stock.
Milled pistons, head studs, modified IP, modified injectors, modified turbo and I am running 2 or 3 times the boost most of the IDI engines see.
I have a bit more time now, I may have time to respond to that other post.
I had to leave when I was on a while ago.
Remember mine is not exactly stock.
Milled pistons, head studs, modified IP, modified injectors, modified turbo and I am running 2 or 3 times the boost most of the IDI engines see.
I have a bit more time now, I may have time to respond to that other post.
I had to leave when I was on a while ago.
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Elder User
Joined: Jul 2006
Posts: 621
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From: Near the ocean
Originally Posted by Dave Sponaugle
The results I see with a ram air to my turbo are a bit different than everyone else here will have.
Remember mine is not exactly stock.
Milled pistons, head studs, modified IP, modified injectors, modified turbo and I am running 2 or 3 times the boost most of the IDI engines see.
I have a bit more time now, I may have time to respond to that other post.
I had to leave when I was on a while ago.
Remember mine is not exactly stock.
Milled pistons, head studs, modified IP, modified injectors, modified turbo and I am running 2 or 3 times the boost most of the IDI engines see.
I have a bit more time now, I may have time to respond to that other post.
I had to leave when I was on a while ago.
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Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
If it were me, I would run it.
Just keep an eye on oil leaks.
From my experience a low restriction intake does not take as much out of the crank case through the CDR.
So slight increase in crank case pressure may cause something like the rocker covers to leak.
Since it is sucking less out of the crankcase, the oil most likely won't be going into the intake.
Just keep an eye on oil leaks.
From my experience a low restriction intake does not take as much out of the crank case through the CDR.
So slight increase in crank case pressure may cause something like the rocker covers to leak.
Since it is sucking less out of the crankcase, the oil most likely won't be going into the intake.
Posting Guru
Joined: Sep 2007
Posts: 2,207
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From: Las vegas
My axle code is a c-5, 4.10 posi, I'm running 35s with an e40d my speedo goes to 90 and I can get the needle to point at 1 on the prnd with a feww hundred rpm left and my speedos only off 2mph at 60mph does this sound fishy to any one els?
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
The 35" rubber is where the speed is coming from.
With 235/85-16 tires you would be looking at 81 MPH at 2520 RPM.
And it would top out at 106 at 3300.
The overdrive ratio in an E4OD is .71.
With 235/85-16 tires you would be looking at 81 MPH at 2520 RPM.
And it would top out at 106 at 3300.
The overdrive ratio in an E4OD is .71.
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