5.7 cam & lifter install and now misfire runs like crap

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Jonnyboy

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Nov 15, 2021
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Location
Tennessee
Ram Year
2014
Engine
5.7 hemi
Ok guys here is the run down. 2014 ram 1500 5.7 hemi. Bought the truck drove it a couple days and it started clanking. Took it to the shop 4,800 bucks later. I get it back. 10000 miles later I thought I had an exhaust leak. Went on a few days and it got worse. Then one night it threw that misfire code. So I thought here we go again. This time after having a bad experience at the shop. I figured I’ll just do it myself. I have messed around with hot rods all my life I done the research on what to buy and how to go about doing it. Got the cam and non MDS lifters and new push rods Diablo predator tuner. Put it all together and tuned now it’s running like crap and throwing these codes. I’ll post pictures any help would be greatly appreciated as to this thing has killed me mentally I feel I’m just tossing money in a can and watching it burn. I also have a video on it running if someone is interested in listening to it. Thanks in advance!
 

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Black1500Ram

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Location
Scottsdale, AZ
Ram Year
2015
Engine
5.7 Hemi
Stupid question, did you buy a non mds cam? They have different profiles (mds vs non mds).
Also did you verify pushrod length?

Maybe a mod can move this to 4th gen Engine section - you might get more answers.
 
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Jonnyboy

Jonnyboy

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Tennessee
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2014
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5.7 hemi
Sorry so long to respond. I kind gave up on it and parked it. Can’t get it figured out but yea the cam was no. MDS I bought it as a kit
 

blabarre

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Ram Year
2011
Engine
Hemi 5.7
My misfire ended up being the exhaust rocker arm on the passenger side wasn’t tightened down enough. Tighted it down and it’s running like a champ
 

Black1500Ram

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Jul 18, 2021
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Location
Scottsdale, AZ
Ram Year
2015
Engine
5.7 Hemi
My misfire ended up being the exhaust rocker arm on the passenger side wasn’t tightened down enough. Tighted it down and it’s running like a champ
What are those Torquie speckies anyhow? ;)

I have the service manual linked in my profile if you need it.
 
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