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Old Dec 16, 2008 | 03:33 PM
  #1  
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Users w/ 5speeds

I have a 5 speed, now I know if you have an auto and do a lot of engine work you will have to build your tranny. I was wondering if that applies to manuals. Can they withstand the hp or will I need more than just a southbend clutch?
 
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Old Dec 16, 2008 | 03:38 PM
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as far as i've heard just clutch will work. my friend Jay has a cummins with alot done to it and all he has is a high performance heavy duty clutch
 
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Old Dec 16, 2008 | 03:40 PM
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Awesome, I was hoping that was the case, the PMS gets expensive you know lol. I hoped i didnt need a tranny too
 
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Old Dec 16, 2008 | 04:05 PM
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The zf 5 is a really strong transmission.
 
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Old Dec 16, 2008 | 04:34 PM
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yea PMS is addictive lol. my auto will need a rebuild when i start doin more to the truck
 
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Old Dec 16, 2008 | 04:43 PM
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Your gonna wanna upgrade your flywheel when you go with an aftermarklet clutch if y7ou haven't done so already. The factory dual mass flywheels are garbage!!!! Best of luck!

Cowboy Steve
 
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Old Dec 16, 2008 | 05:03 PM
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Dale at Tymar told me the E4OD is a "stronger" tranny than the ZF5. Meaning that as far as the ability to handle raw power, it has more guts. They are troublesome because of heat issues (I believe) which do not affect the ZF5.
I am clearly no expert on the matter, just passing on what he told me. I was kind of shocked when he said it due to all I have read here about E4OD issues. But he assured me that it was his opinion.
 
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Old Dec 16, 2008 | 05:11 PM
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Originally Posted by Talyn
The zf 5 is a really strong transmission.
Yep, a good clutch and SMF like Luk or Valier will take a lot of abuse
 
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Old Dec 16, 2008 | 08:18 PM
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Originally Posted by ckal704
But he assured me that it was his opinion.

Words right outta my mouth.......

Cowboy Steve
 
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Old Dec 16, 2008 | 08:36 PM
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the ZF-5 is used in logging skidders if that tells ya how tough they are
 
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Old Dec 16, 2008 | 08:56 PM
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^^^^^ Look at the sides of the ZF case. See those two plates? That's where you can connect PTO shafts.
 
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Old Dec 16, 2008 | 08:59 PM
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I put ina Luk SMF and a Luk heavy duty clutch and figure my ZF-5 can handle just about anything..
 
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Old Dec 16, 2008 | 09:04 PM
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auto trannys in general are more complicated with more moving parts they are also more seseptible to heat. ofcourse they can be built to be stronger but imo autos are weaker because of the afore mentioned issues
 
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Old Dec 16, 2008 | 09:13 PM
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heat is an auto's worst enemy, and if you are like me and have a bad tendency to get yourself in sticky situations then you go with what will take a beating and the zf5 will take one heck of a beating
 
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Old Dec 16, 2008 | 10:21 PM
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A well built E40D/4r100 tranny will out perform and outlive a Zf5 tranny handling a 200% increase in horsepower and torque over stock. You'll make more efficent use of your new added horsepower increase with a well built auto versus a zf series tranny

Heat will destroy any tranny including a manual unit....

Cowboy Steve
 
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