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1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

91 dodge auto

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  #1  
Old 05-01-2010, 09:35 PM
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Default 91 dodge auto
how stout are these automatics. also what transmission mods would be good for using this pickup to pull heavy loads. i will be putting a 4.56 gear rearend in it
 
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Old 05-02-2010, 12:16 AM
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torque converters are a known weak link in these transmissions a good aftermarket tc is a must. the 518 doesnt tend to like holding up too much IMO, ESPECIALLY the overdrive units
 
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Old 05-02-2010, 01:47 AM
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yep and a valve body or shift kit
 
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Old 05-02-2010, 08:57 AM
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anybody now what it would take to put a chevy nv4500 in this dodge. i have a dodge flywheel, clutch and all hydraulics. can i just switch the input shaft to dodge
 
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Old 05-02-2010, 09:56 AM
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The 4500 in the diesels is different from the 4500 from the chevys. Its alot more HD.
 
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Old 05-02-2010, 11:11 AM
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well if the nv4500 is from a chevy diesel all you really need is the different bellhousing i believe and possibly the rear engine adapter
 
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Old 05-02-2010, 11:49 AM
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I've been told the chavy 4500's were weaker.
 
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Old 05-02-2010, 12:12 PM
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they are up until like 96 or 97 i believe. after that there a very good trans and IIRC they dont have the 5th gear problem
 
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Old 05-02-2010, 08:24 PM
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my 4500 is a 94 model. the input shafts are different. but i didnt know if they have the same size input shaft gear as the dodge tranny
 
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