Cam Question...

[ajbarbato15]

Ok I'm kinda lost when it comes to all this technical engine stuff, but I am trying to learn as I go here. I have a 2009 300C 5.7L. I have been talking to Vortech for a while now and I will be doing the Vortech V3 supercharger and Kooks headers hopefully very soon. I don't have the money right now to build the motor so I was just looking into a cam for the time being. Is this a good idea? Is there a cam that I can install and run now, before the supercharger? And then have it also be a good fit when the S/C does come in? Will this require a tune? Are there any other things that I should be looking into that arent TOO expensive? I know a lot of poeple say to get new heads, but then I hear that its pointless because the bottom end wont hold up anyway. Of course I would like a nice 392 stroker, I just dont have 10 grand to drop into it on top of the S/C...

Im pretty confused on what to do right now and I guess I just need some good advice. Can anyone just throw a few things at me please?? Thanks!

[rander]

Ping HEMI~C(Chris) or lafrad(Mike). They can probably set you in the right direction.

[SRT8U]

There are a few cam options coming for then 09 5.7. I think Inertia just installed their first one.

What are your goals for the car? The Vortech alone will pick up more than 100 RWHP on your car, so a cam isn't 'necessary' to make some power. I would suggest adding water meth to the setup to make sure things stay cool. Remember once you throw a cam in the mix you will need custom tuning, whereas you could run the canned tune if you stay stock. One other note, not sure if the Vortech drivetrain warranty is important to you or not, but a cam will obviously void that. the heads on the 09 5.7 flow great from the factory, not that ported heads wouldnt flow better, but unless you plan on forging the bottom end and running more boost it isn't worth the time and $$ IMO when S/C-ing

Feel free to pm me or give us a call at 877-BMC-RWHP. We have done alot of Vortech installs as well as Cam's.

[ajbarbato15]

Well, I was planning on running meth, and I was also planning on getting a tune for the addition of the meth and exhaust and so forth. This probably sounds crazy but the biggest reason for my urge to get a cam is to have a crazy sounding idle. Obviosely, a tune will bring the power out of the cam as well. Haha..is this logical in any way?? Now I do have 2 more questions. Is it possible to do a cam now without a tune? And what cam would be a good fit for me, something that will give good power with the S/C and also a crazy idle?

[turbohips]

I don't think 392's cost 10 grand. I thought it was roughly half that.

[MadCharger]

Well, I was planning on running meth, and I was also planning on getting a tune for the addition of the meth and exhaust and so forth. This probably sounds crazy but the biggest reason for my urge to get a cam is to have a crazy sounding idle. Obviosely, a tune will bring the power out of the cam as well. Haha..is this logical in any way?? Now I do have 2 more questions. Is it possible to do a cam now without a tune? And what cam would be a good fit for me, something that will give good power with the S/C and also a crazy idle?

A proper cam for a supercharged car will not give you a crazy loping idle. A good SC cam will have a wide LSA, which would reduce the overlap that causes a lumpy sounding idle.

[hemidup]

A proper cam for a supercharged car will not give you a crazy loping idle. A good SC cam will have a wide LSA, which would reduce the overlap that causes a lumpy sounding idle.

^^^ Agree'd.

[formerice]

If I could swing it, I'd do a 392 stroker first. No replacement for displacement. Then before you do a blower you can pound enough nitrous to a built motor to run with about anyone at the track. A cam that is ground to sound good might not be the most streetable. I have driven my friends 392 stroker with a radical KRC cam and it's quite a handful on the street compared to the mild Sidewinder in my car. It does sound wicked, however. My car can almost pass for stock, his car isn't gonna fool anybody.

[rander]

Didn't no that Nick. Good deal.

A proper cam for a supercharged car will not give you a crazy loping idle. A good SC cam will have a wide LSA, which would reduce the overlap that causes a lumpy sounding idle.

[dudeiwin86]

yep.
the lope is caused by both valves being opened at the same time.
a tighter or lower LSA number means theyre open together for longer periods of time.
aka overlap.

well if theyre open for longer, and your blower just has more time to push air straight thru from the intake and right out the exhaust port.

this builds less cylinder pressure, and yo uget less powe rfrom the supercharger.

it is for the same reason that these cams produce less off idle torque when N/A.. less overall cylinder pressure, however more peak power.... since there is a little more fresh air going all the way thru the head, it washes out more exhaust... thus better scavenging at high rpms, thus more power.

but in the case of a blower, you just wasting power all thru the powerband with a choppy cam.