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-   Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 (http://www.ramforumz.com/forumdisplay.php?f=83)
-   -   6.1 intake manifold (http://www.ramforumz.com/showthread.php?t=64081)

stisam80 10-19-2010 10:33 PM

6.1 intake manifold
 
Hey guys I was wondering if the 6.1 hemi intake manifold well fit my 5.7 hemi?

CdnoilRAM 10-19-2010 11:52 PM

They will bolt up, but the ports don't match up correctly and would require quite a bit of grinding/polishing to port everything so it'll match up without having the lip that would restrict airflow.

sprintertech 10-20-2010 12:01 AM

Quote:

Originally Posted by CdnoilRAM (Post 338813)
They will bolt up, but the ports don't match up correctly and would require quite a bit of grinding/polishing to port everything so it'll match up without having the lip that would restrict airflow.


huh...i was under the impression they wouldnt:4-dontknow:

CdnoilRAM 10-20-2010 12:38 AM

Direct quote from S-A Designs High Performance HEMI builders Guide pg. 71-72:

some enthusiasts have swapped the 5.7L's composite, long-runner intake with the 6.1L's aluminum manifold, which features shorter runners. But with the 6.1L manifold fits the 5.7L, it is of limited effectivness without additional performance modifications to support its air-flow design. An upgrade to increaded flow cylinder heads, a supercharger, or nitrous-oxide would compliment the 6.1L manifold.
A caveat to using the 6.1L manifold: without proper tuning, the 5.7L's computer won't like it.


Hope it helps.

NewToDodge 10-23-2010 06:06 PM

I will have to keep this info in mind when I start looking at super chargers...

DeepWaterHemi 10-23-2010 11:18 PM

Don't know if this helps but I know a quite a bit of chargers and challengers with the 5.7/6.1 manifold swap with "Crank This Motorsports" adapter kit. Never heard of any restrictions or anything.

NewToDodge 10-24-2010 01:29 AM

I found this on ChargerForumz.com that a guy did 5.7 to 6.1 intake manifold swap. He went through this company: http://www.inertiamotorsports.com/motors.html
The upgrade kit is towards the bottom of the page its $425 for the kit and then you have to supply the manifold and do a couple other things like build a CAI for it, but its very possible.
If I remember correctly I think the guys name was Stu at that company.

There is a picture of the engine with the swap but the file is to large for me to post the picture.. If someone else would like to post it here I have the link.

This is the setup the guy used with the swap:
FRI Ported & Polished 6.1L Manifold
FRI 5.7L Extreme Cylinder Heads
FRI Littleboy Camshaft

DeepWaterHemi 10-24-2010 10:39 AM

yeah thats definitely Stu at Inertia. One of my buddies has his 372 stroker motors which is a 5.7 block based motor and he has the the 6.1 manifold on it. Inertia also makes the manifold swap kit for the 4th gen rams with the 5.7. Definitely one of my next mods.

stisam80 10-28-2010 11:09 PM

kool thanks. just looking for little things to do to it.

raceram9 10-29-2010 10:51 AM

it will take a lot of work to do it and the 6.1 intake was made for the LXs and you will lose bottom end tq and if you have a 2500 w/HEMI you probably don't want that


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