RPM and stall speed @ 60mph

[wart1de]

Hello,

I am still trying to work out how mild/wild I want my 'Cuda to be once it is back from getting painted and have a question about stall speeds. I was planning on running a overdrive to keep rpms down on the highway. If I have a 4000 stall converter and my rpm @ 60 is only 2500rpm, will this end up frying my converter/box? I want a quick street/strip car but am concerned about the implications of having a high stall ( 4000 or so ) for street driving when I wouldn't be going over 4000rpm that often.

thanks again

[Chryco Psycho]

you will be replacing trannys regularly , the heat from slipping the converter constantly will kill them

[GoodysGotaCuda]

Yup, with an o/d you cant have a stall higher than your cruise rpm. You'll heat things up quick, unless you have some kinda lockup trans that you can get a stall for

[nivvy]

I run 3.91's with 28" tires and a 3200 stall and on the highway im at full lock at 65mph... no slippage 

[GoodysGotaCuda]

your at about 3100/3200rpm right? now stick in another gear..she'll slip lol

[tactransman]

What rearend ratio you gonna run?

[wart1de]

I'm running 3.91s .. so highway driving @ 2500-3000 with a 4000 stall is out of the question. How about non-highway driving with 30/40mph speed limits - even I went with a smaller 3200 stall it still would rarely be locked up. Would I still end up trashing my trans or is city/residential driving not so bad?

[GoodysGotaCuda]

fwiw i run a 3500 footbrake, 3900rpm flash 9 1/2" dynamic. Through town and on the highway at about 65 or so. When i'm not 'on it' it acts pretty good. I do have a huge front cooler and a plate cooler in the fenderwell with a fan on it. Dont have a trans temp gauge, i do have a decent cooling system for it, no issues in about 2years driving it that way. It'd be better if i had trans temps to share, sorry to say i cant help there

[MEK-Dangerfield]

Just a question... WHY do you have a 4000RPM stall converter?   



   Mike

[wart1de]

I don't have one yet. I'm just weighing up my options on how to make my 'Cuda as fast as I can on the track while still being reliable on the street.

[tactransman]

I'm just weighing up my options on how to make my 'Cuda as fast as I can on the track while still being reliable on the street.

That's a fine line there your walking!    I would stay in the 3500 Stall range ,with the 3.91's you should be fine.

[Oldschool]

That's a fine line there your walking!    I would stay in the 3500 Stall range ,with the 3.91's you should be fine.

In the fine tradition of Black340  --  --           

[MEK-Dangerfield]

In the fine tradition of Black340  --  --           

   

[wart1de]

3500 it is

thanks all

[tactransman]

Here is a good place to get one.

http://www.ptcrace.com/index.php