6.4l camshaft into 5.7l - Dodge Challenger Forum: Challenger & SRT8 Forums
Bolt On's Anything related to the quick Bolt-On mods. From Intakes to Exhausts. This includes Cams and Heads.

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#1 (permalink) Old 04-29-2011, 11:11 AM
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6.4l camshaft into 5.7l

new here, but been racing for many years, sort of retired from it, bought myself a toy, 2011 R/T Challenger Redline, Tremec 6 speed.

Mods so far, lowered car 2 inches, mopar 10 black wheels, Hurts shifter, Mopar cai, many cosmetic changes from changing spoiler to flat black to black fuel filler, the Mopar cat back ordered but not yet installed, this car needs to be streetable, have a 65 twin screws Dart in the garage that isnt....
looking for opinions on changing camshaft, my thought install cam from 6.4L to 5.7L, both MDS, everything except springs are the same
pros & cons?????

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#2 (permalink) Old 04-29-2011, 01:48 PM
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MDS? on six speed?
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#3 (permalink) Old 04-29-2011, 02:07 PM
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mds is a fuel saving system on most new hemi's, shuts down cylinders in eco mode in order to improve fuel economy and emissions, at cruise speed under little or no load the engine becomes a 6 cylinder than possibly a 4 cylinder, most people dont know they have it

looking for pros and cons on using the 6.4L cam in the 5.7L hemi, hoping someone has already done this mod

everything is almost indentical, have compared the specs from both cams, the 6.4 is a much more agressive cam.....
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#4 (permalink) Old 04-29-2011, 02:14 PM
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by the way, parts & service director in a large Dodge dealer, have access to almost anything, parts and the modifications are no issue,

want more, but do not want turbos or any sort of force inductions system....

thanks

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#5 (permalink) Old 04-29-2011, 02:15 PM
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MDS is an auto transmission feature only. Not on 6 speed manual.

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#6 (permalink) Old 04-29-2011, 02:49 PM
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... additionally you will need a custom tune for a new cam and 5.7 heads from what I have read. Tuning isn't currently available for 2011 R/Ts.
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#7 (permalink) Old 04-29-2011, 03:29 PM
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It would be an improvement,But piston valve clearance may be a problem,you would be gaining.105 on the intake lift and about 28* duration,and.077lift on the exhaust and no gain in duration.It would be a nice gain but i think P to V will be tight.

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#8 (permalink) Old 04-30-2011, 01:21 PM
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my bad, your right, when back and decode my vin, no mds, if too little clearance with the 6.4L cam what about the 6.1L
thanks
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#9 (permalink) Old 04-30-2011, 01:23 PM
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when it comes to tuners, the diablo trinity seems like the right choice???
called on and was told maybe next month on availability
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#10 (permalink) Old 04-30-2011, 05:04 PM
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Maybe it's just me, but the thought of putting a cam from a 6.1 or 6.7 into the 5.7 sounds like crazy talk. Why not look at aftermarket cams made for the 5.7 and VVT?

6.1 cam shouldn't work at all, it's not a VVT cam.
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