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Custom Dodge Ram Performance Mods - Engine - 6.4 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 6.4-liter HEMI® V8 engine - 410 horsepower, 429 lb-ft of torque.


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  #11  
Old 02-04-2014, 12:36 PM
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HemiLonestar HemiLonestar is offline
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I just want to get my hands on a long block lol.
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  #12  
Old 02-04-2014, 12:43 PM
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Wow...0W-40 oil recommended for truck 6.4.

Quote:
Originally Posted by SRTian View Post
It's referring to the 5.7 hemi. The 3.6/6.4 shows 87 to be recommended. It's written the same in my hard copy owner's manual.
And he is correct:

FUEL REQUIREMENTS
3.6L/6.4L Engine
These engines are designed to meet all
emissions regulations and provide excellent
fuel economy and performance when
using high quality unleaded “regular”
gasoline having an octane rating of 87. The
use of premium gasoline is not recommended, as it will
not provide any benefit over regular gasoline in these
engines.
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  #13  
Old 02-04-2014, 01:19 PM
Stampede4.7 Stampede4.7 is offline
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Quote:
Originally Posted by HemiLonestar View Post
I just want to get my hands on a long block lol.
That makes two of us!

Stampede.
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  #14  
Old 02-04-2014, 09:13 PM
PETE YK PETE YK is offline
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Definitely heavier pistons and possibly beefed up crank, the cam, the tuning, i believe there is a external oil cooler, they say the iron in the block is a slightly different composition… everything to make it a reliable truck engine. Sounds like chrysler did their homework on this one.
Nice to see 0w-40 recommended, will help a lot with the cold starts.







I WANT ONE.
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  #15  
Old 02-05-2014, 01:02 PM
Stampede4.7 Stampede4.7 is offline
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I read an article about the 6.4 truck having the 5.7 intake, and heads. It also has MDS, VVT, piston oil squirters.

Stampede.
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  #16  
Old 02-05-2014, 04:41 PM
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Now if they were to throw direct injection on it,they'd have something worthwhile.
Nice to see they've finally got around to piston cooling,finally
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  #17  
Old 02-06-2014, 12:53 PM
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Quote:
Originally Posted by Hornet View Post
Now if they were to throw direct injection on it,they'd have something worthwhile.
Nice to see they've finally got around to piston cooling,finally
Piston squirters have been in the 6.1 blocks since the beginning, I don't know why they didn't carry it over to the 5.7's for longevity.
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  #18  
Old 03-30-2014, 10:12 PM
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Here is some information of the 6.4L Hemi in the Ram:

https://dl.dropboxusercontent.com/u/...Technology.pdf
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  #19  
Old 04-01-2014, 01:15 AM
huntergreen huntergreen is offline
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seems like longevity was considered when designing this engine.
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  #20  
Old 04-11-2014, 10:59 AM
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Ram Truck 6.4L vs. 5.7L and 6.4L SRT
FW mag:
Is the Ram Truck 6.4L Hemi basically a 5.7L Hemi with increased bore and stroke?

Ram Truck:
Yes
5.7L - 3.92 x 3.58 (99.5 x 90.9)
6.4L - 4.09 x 3.72(103.9 x 94.6)

FW mag:
What’s different between a 6.4L SRT and a 6.4L for the new Ram?

Ram Truck:
Part number difference – larger components:
Block
Heads
Valves, seats
Cam
Pistons, rings, pin
Rods
Intake and exhaust manifolds
Oil pan
Oil pump
Front cover

FW mag:
What are the differences between a MD 6.4L and a HD 6.4L (Chassis Cab)

Ram Truck:
Due to the duty cycle with the Chassis Cab applications we added sodium cooled exhaust valves, stainless steel exhaust manifolds and upgraded fasteners and gaskets.
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