Why aren't our inertia cams choppy sounding?

[dejuan71]

I've only heard rwalshphoto's car but from what i've heard they don't have that choppy sound like i hear on v6 mustangs which made me want one in first place. I could care less about how many horses i get. I mean i know they're mild but it just seems silly to have to get 1.2 cams to get that sound if thats what i need. Then have to pay however much for new heads to even use the 1.2 version.

[JarZ]

Can't speak for Mustangs but they probably have a ton of available cam options where as ours are the first to the market and are naturally milder as they are the first of their kind for the 3.5L HO. As tuning progresses and cams get larger and more options are available, there should be opportunities to get "that" sound from the 3.5 (and possibly future V6 Chrysler engines)

Posted via LXFMobile

[dejuan71]

Yeah i hate how ford and chevy v6's are born with mods lol

[foxtail]

I dn't get it? What do mean you?

[oakcharger]

yeah i got v1.1 cams in my v6 and its not loopy at all but a aggressive crank would make it loopy as hell. I know what you mean with chevy and ford v6 they are very ready with mod from factory cams, crank, injectors, bigger tbs. All of us Dodge guys and gals need to get aftermarket lol

[ToddStone]

I have to agree with you on that. We do need to get more, but you have to look at the fact that the Mustang has been around for 45 years and there are a lot of people that have bought the Mustang vs the Charger and that results in a lot less aftermarket parts. It sucks, but it's true.

You also have to consider that even though there's a lot of people here on the site that want to do mods non-stop, but there's 100 fold for people who don't care to get mods.

[lafrad]

The "Choppy sound" of a big cam is due to actual MISFIRE at idle. big cams usually create situations where the air/fuel mixture at idle has lots of exhaust gases in it, and are in general NOT consistent from cylinder to cylinder.

Turns out the Mopar 3.5, with the extremely long runner intake manifold, well designed ports and combustion chamber, excellent spark, etc... make it difficult to get "misfire" at idle unless you go WILD on the camshaft. at that point, you have shifted the powerband SO FAR up in the RPM range that the car feels positively SLOW!

You *MAY* be able to push a bunch more overlap into the cams, and open the short runner valve at idle in the tune (I will have to see if that would work) to get a choppier idle... but I bet that would only last a week.. the nasty behavior of a choppy idle on a electronic throttle car would just cause you to regret it.

[rwalshphoto]

The video clips I have up on youtube are pretty old. I've gone through a few tune revisions and since installed coated JBA shorty headers and such. I'm running 91 with a bit more aggressive timing curve then I was before. I will try and get some new videos up soon before I do the performance heads from Inertia. The headers have a lot to do with that exaggerated lope at idle - its more pronounced because the after market headers are stainless steel and thinner then the stock cast iron ones and they resonate better, not to mention more free flowing. The cams definitely have a huge affect on the sound that may not necessarily come through in the video. Generally speaking the valve train is a bit louder but the sound is a lot more pronounced and have more lope (opening closing of valves). I've had techs at 2 different dealers ask what mods I have on my 5.7 after they hear it run. The weather seems to affect it a bit too - sounds much more healthy and "gargly" in this cool weather. I've had a few customers tell me the ported manifold changed their sound a bit too.

Give me a couple days and I'll try and get some new vids up.

[BDA1855]

Yeah i hate how ford and chevy v6's are born with mods lol

They arent born with mods... the 3.8L ford is over 20 years old... and the 4.3L Chevy is even older... PLUS they are both Pushrods... that tech has been around for ever so making cams is a breeze... the new SOHC tech is fairly new, espeically the dodge V6... so performance parts are not as easy to come buy.

plus the market for V6 performance parts (serious parts) is not as big as say the Hemi Performance market... so companies dont want to spend the R&D to make cams when they are going to sell maybe 80 sets in 2 years...


i ran into this problem back when i had a V6 mustang... they had a cam for it, but it was twice the price of the V8 cams... and didnt really provide any significant gains... it was all that R&D going back into the price.

[ToddStone]

Inertia's cams are, I believe, to be pretty reasonable for the V6 and the HP/TQ gains are pretty significant for the most part, and that's probably before a good tune is done with other mods. I really don't care about the other brands and what they do or don't do. I love my 6 and will have a lot of fun with it and if I can beat up other cars along the way, I will!

[dudeiwin86]

yeah i got v1.1 cams in my v6 and its not loopy at all but a aggressive crank would make it loopy as hell. I know what you mean with chevy and ford v6 they are very ready with mod from factory cams, crank, injectors, bigger tbs. All of us Dodge guys and gals need to get aftermarket lol

the crank doesnt have much of anything to do with how its going to sound... (choppy or not).

its all in the cams

[Bryali]

plus the market for V6 performance parts (serious parts) is not as big as say the Hemi Performance market... so companies dont want to spend the R&D to make cams when they are going to sell maybe 80 sets in 2 years...

This is a huge part of the aftermarket. Just look at the numbers of members on this forum that have 1 version of the V8 or another compared to the number of V6's. Even within the V6, there's less demand for parts for the 2.7 than there is the 3.5. It sucks, but that's the way it is. And like Todd said, there are so many more people that don't care at all about modding their car. They're happy driving their car in stock trim either for the next 5 years or till the wheels fall off. I'm just happy there are people that do give love to the 3.5L so I can feed my habit. I might not buy as fast or as often as I'd like, but I know that when I'm ready, someone'll be there.

[dejuan71]

They arent born with mods... the 3.8L ford is over 20 years old... and the 4.3L Chevy is even older... PLUS they are both Pushrods... that tech has been around for ever so making cams is a breeze... the new SOHC tech is fairly new, espeically the dodge V6... so performance parts are not as easy to come buy.

plus the market for V6 performance parts (serious parts) is not as big as say the Hemi Performance market... so companies dont want to spend the R&D to make cams when they are going to sell maybe 80 sets in 2 years...


i ran into this problem back when i had a V6 mustang... they had a cam for it, but it was twice the price of the V8 cams... and didnt really provide any significant gains... it was all that R&D going back into the price.

Yeah but even the newer mustangs and camaros got more mods and we've been out since 04 or 05 and just getting some basic mods shouts out to inertia and aecarbon though. Hell i even saw a 2.7 tiburon with a loopier sounding cam on youtube. I'm sure as ryan said they sound better with more tuning. I just figured all cams did the same thing.

[blkbelttech]

Yeah but even the newer mustangs and camaros got more mods and we've been out since 04 or 05 and just getting some basic mods shouts out to inertia and aecarbon though. Hell i even saw a 2.7 tiburon with a loopier sounding cam on youtube. I'm sure as ryan said they sound better with more tuning. I just figured all cams did the same thing.

dejuan. with the setup you were gonna be doing originally you wouldnt want a lobey cam anyway. As lafrad says the lobe is from a misfire and a set lsa on the cam.
a/ most of inertias cams can be speced different , with different lsa's for lobe and no lobe but its based on where your going with your build.
b/ you were talking about boost in the future when i last talked to you. With boost less lobe is better in order to build up more boost. Lobe is more for people going huge stroker motor non forced induction. Lobe comes from the intake and exhaust valves being open at the same time which can cause less time for boost to build.

You were wanting boost so the cams i was talking with you about would likely not be have much lobe at all. If your just going for sound and no power we can do that with exhaust and cam and stuff . Just have to figure out what your overall goal is man.

If you want some good lobe , go out tomorrow, pop the hood and disconnect two coils

[dejuan71]

hmm..nick is that you lol? So lemme get this straight i cant run boost and have a cool sounding cam? So what the heck does a superchargerd/turbo car sound like with a cam? I could have sworn i've seen youtube videos of supercharged cars with cams that sounded more aggressive well naturally because their mostly V8s but still.