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-   12 Valve 2nd Gen Dodge Cummins 94-98 (https://www.dieselbombers.com/12-valve-2nd-gen-dodge-cummins-94-98/)
-   -   ring and pinion question (https://www.dieselbombers.com/12-valve-2nd-gen-dodge-cummins-94-98/56591-ring-pinion-question.html)

gdubyah 08-13-2010 03:32 PM

ring and pinion question
 
I have a 12 valve with a 5spd with 4.10 gearing on the freeway icant get over 70mph in overdrive could this be a gearing problem or somtehing else thanks for any help

lodal cummins 08-13-2010 04:36 PM

i believe i have the same gears in my 92 5 speed and 85 to 90 is about tops for me. are you sure it is not a fuel problem?:humm:

94 12valve 08-13-2010 07:18 PM

gov springs will help you out

cumminspwr11 08-16-2010 12:38 PM

ya check out your fuel and make sure you have good pressure also check the intercooler boots,if one of them is ripped or came off it will decrease your power and speed, a gsk kit will raise your top speed also but you should be able to hit 80 or 90mph stock, my 95 with auto would go 95 tops stock but when i put the 3k springs in-it just keeps climbing past 110

also had a bone stock 94 with 5speed and 4.10 and max top end was 85mph fulling loaded or empty

NadirPoint 08-16-2010 12:48 PM

What size tires on it?

gdubyah 08-16-2010 01:54 PM

I have 285/75/16 tires. (33's). I also have a 3k kit in it

NadirPoint 08-16-2010 02:16 PM


Originally Posted by gdubyah (Post 606165)
I have 285/75/16 tires. (33's). I also have a 3k kit in it

Yep, def sumpin' wrong there then...

94 12valve 08-16-2010 02:26 PM

how many clicks are on the gov springs?

gdubyah 08-16-2010 02:29 PM

Its almost like its hitting a speed limiter I get to 2400 and it starts bucking

---AutoMerged DoublePost---

I didnt put them in I couldnt tell you enterprise engine did them

94 12valve 08-16-2010 04:09 PM

Did you have this problem before they installed the springs?


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