Muldoon's Performance Transmissions

68RFE Transmissions

Muldoon’s Performance Transmissions in New Castle, DE specializes in 68RFE transmissions for 2007–2024 Dodge Ram and Cummins diesel trucks. Built to handle the demands of heavy towing, high torque, and daily driving, our 68RFE units deliver unmatched strength, smooth shifting, and long-lasting performance. Whether you’re looking to replace or upgrade, trust Muldoon’s expert craftsmanship and proven components to keep your Ram running strong and ready for any challenge.

68RFE Transmission
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68RFE Transmission
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68RFE Transmission
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68RFE Transmission
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68RFE Transmission
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68RFE Transmission
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68RFE Transmission
Quick View
68RFE Transmission
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Testimonials

instagram videos

If you have a lathe, a bridgeport and a mcmasterr carr account, you can do just about anything. I wasn’t fond of the three legged “spider drive” attachment that was included with the transmission dyno - it lacked precision in the concentricity and runout department. Necessity is the momma of invention - I machined a Cummins crankshaft simulator. This way I can bolt up any flexplate that is used behind a Cummins engine and have a drive that runs seamlessly. 

MPT - DRIVEN BY PRECISION 

#mcmastercarr #americanmade #machining #monarchlathe #bridgeport #automatictransmission #transmissiondyno #passion #drivenbyprecision #muldoonsperformancetransmissions #dynotested
We are running a Black Friday sale 11/15-11/30
 
  Big savings!

#blackfriday #sale #diesel #cummins #dynotested #muldoonsperformancetransmissions #dodge #47RE #48RE #68RFE #madeinamerica
Not bad for a VP44.. more modifications to come! That fourth gear tire chirp 😂. Have been absolutely loving our second gen shorty shop truck. 

#VP44 #quadzilla #secondgen #cummins #skrrrt #ram #muldoonsperformancetransmissions #diesel
All the way up! 

#muldoonsperformancetransmissions #47RE #47RH #48RE #madeinamerica #cummins #dodge #ram #topfloor @sonnaxtransmission @suncoastperformance @transgoshiftkit
We are dedicated to craftsmanship and quality. #muldoonsperformancetransmissions #47RH #47RE #48RE #68RFE #madeinamerica #dodge #diesel #automatictransmission #lathe #dyno #manufacturing
We’ve been hard at work at the shop, and pushing harder every day. The throughput of my team is exceptional. Onward and upward!
#muldoonsperformancetransmissions #68RFE #47RE #48RE #diesel #ram #dodge #cummins #teamwork #automatictransmission
TIG is one of our credentials. It makes the 

TRANSMISSION
IMMENSELY
GREATER 

If your builder can’t TIG weld your 68 pinions and ring gear orifices, you may want to go somewhere that can. 

#muldoonsperformancetransmissions #tgaw #68RFE #48RE #47RE #welding #improvements #littlethings
Why do I weld every one? 

Because 48 thrust washers need all of the oil they can get!

#tigwelding #48RE #cummins #ram #diesel #dodge #muldoonsperformancetransmissions
It’s been a busy spring. We’ve been working hard to keep up with the demand. 

#muldoonsperformancetransmissions #68RFE #48RE #valvebody #sonnax #cummins #diesel #transmission #ram #dodgeram
Want full control over your 47/48RE transmission? Check out our manual valve bodies. Install one of these bad larry’s to do rolling burnouts at 4K rpms wherever your heart desires. Every valve body is dyno tested to make sure you will only be shredding tires and not your transmission clutches.  #47RH #47RE #48RE #cummins #dodge #automatictransmission #performance #diesel #ram #dodge #muldoonsperformancetransmissions
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