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found aftermarket cams

2.8K views 16 replies 11 participants last post by  Fargo59  
#1 ·
I've been poking around the LX sites and found a company called Inertia MotorSports. They have made some beefy cams for the 3.5L. Also they will fit the 3.2L. I got a price quote and its 375 total for the cams and lash caps. There is a 200 dollar core charge refund so when its said and done its 175 total.
 
#2 ·
They have a core charge for cams?
 
#4 ·
Dayum, any idea how much of an increase they would be? Even if it is only a few ponies, $175 is a pretty good deal. Yet another reason I am waiting for my 2.7 to take the dirt nap.
 
#6 ·
Custom Ground Camshaft $410 SHIPPED
We announced a while back that we were coming out with our own line of camshafts and they are now available. Essentially we have 13 different lobe profiles that can be used on either the intake or exhaust. So the way to build your own cam is to select the intake lobe based on duration @0.050" and lift then select the exhaust lobe based on the same thing. Then determine the lobe separation angle desired (LSA) and then if any advance or retard is desired so given the lobes shown below if you wanted a 205 intake/209 exhaust duration cam with 0.520"/0.531" lift on a 114 degree LSA with a 2 degree advance you would order a: C/D/114+2. the next complication is we also have the ability to play with the ramp approaches of the lobes so the duration can be increased or decreased by approximately 5 degrees either way without effecting lift. So if the duration is reduced then add a "-" in front of the lobe letter or if it's increased put a "+" in front. So if you took the above cam number and wanted the same lift but less intake duration and more exhaust you would specify a -A/+B/114+2 and you would get 200 intake / 214 exhaust duration with 0.520" intake and 0.531" exhaust lift and the same 114 LSA and 2 degrees advanced. Piece of cake, eh? For those of you not wanting to get that intimate with camshaft selection we will have some pre designed cams for given applications or let us know what you are looking for and we can suggest a profile.

LOBE DURATION @ 0.050" LOBE LIFT LIFT @ 1.65 ROCKER RATIO
A 198 0.303" 0.500"
B 201 0.310" 0.512"
C 205 0.315" 0.520"
D 209 0.322" 0.531"
E 213 0.330" 0.545"
F 218 0.337" 0.556"
G 222 0.343" 0.566"
H 225 0.350" 0.578"
I 229 0.357" 0.589"
J 234 0.363" 0.599"
K 236 0.367" 0.606"
J 240 0.370" 0.611"
M 244 0.373" 0.615"
 
#7 · (Edited)
Info that the other site has pointed out and I have replied but they want to pick at.

The cams would make the motor run lean.
Yes for the first mile or so but the PCM will force it self to cope. The LX guys are using these cams on stock PCMs that isn't tuned. The cams aren't that much bigger. Also if some how if our PCM can't cope with it there is a way to force it by adding a higher voltage to the MAP sensor to increase fuel so it will even back out the air to fuel ratio.

The O2 sensors will freak out
Dunno but theres always the 10 dollar fix with some spark plug non-foulers to choke the O2 sensors.

Yea we might not have a nifty hand-held tuner but we can force the system to do what we want by manipulating sensors.
 
#9 ·
So am i to understand that a set (i.e. "2") of camshafts for the 3.2L/3.5L are ONLY $175? For both cams? I dont wanna be the asshole here, but that sounds like BS. To compare, a single Edlebrock Performer RPM cam(popular company) for a small block chevy (popular engine) is $170+tax from JEGS.com...for 1 cam. And they're sending you 2 cams for $175(core excluded)? That sounds a little fishy to me. I mean, what are they made of...Cast iron or aluminum?

As for the effects on the PCM and O2 sensor, it sounds like these aren't exactly a direct swap which is what most people on here are probably looking for. I mean sure there's an easy way around it, but Im not the type to put a band-aid on engine electrical circuits. Its a $1200 part from Mopar. Myself, I'd want to have the company making these wonders tell me flat out "Yes these will work. No problems". So, if those issues could be addressed, then hells yeah sign me up! I'll even buy an extra set just for the hell of it...
 
#10 ·
I have to agree with turbotrep21, when a company comes out with a product, especially one that is designed for the internals of my car, I personally want them to answer me "yes it will work fine, add power, and have no problems with durability issues" If they cant tell me that.. I'm usually skeptical.
 
#12 ·
Your not going to get that because they are NOT made for your car. They are made for the charger that has a lot more tuning solutions then we do.

That said I dont doubt the PCM in our cars can handle it although you may not get the full 100% benifit of having them. If I had to pull my motor out next week, I would be ordering a set while I was at it.

Durability is a quality issue of the part, and from what I have read on Inertia, that wouldnt be a problem.
 
#11 ·
actually, thats $375 PLUS the 200 dollar core. the core is required as these are re-ground cams for the time being. as demand grows, they will make blanks. i may do this for my 01 come spring. I have an inertia "spartan" cam sitting in a box for my 07 Charger R/T, once i crack 12's in spring, it goes in. stu (inertia) is a great guy, if you have questions give him a call.
 
#14 ·
not quite. youre referring to a broached cam. the 3.7 and 4.7's use that style, or did. theyre now fabricated.
the 3.2/3.5/4.0 cams are only hollow due to the long bolt used for the cam sprocket. they are cast with a hardened finish.
 
#15 ·
Them numbers show some wicked exhaust lift numbers. All of them in the .500 and even .600 ranges. Now i really dont know a lot about cams, but would the stock heads be able to take that much lift?
 
#17 ·
stu is a mechanical engineer. and one heck of a competent engine builder. if you have ANY questions, CALL him. he is aware of the tuning limitations on these cars, and at this time B&G PCM's are the only option.