Camshafts

**BlaKDeviL** · 02-25-2008, 03:47 PM

Ive been looking around for some nice loaping cams. I have found a few for the 6.1L motors but do not know which is the best or which ones are the best for our motors. Some cams require computer tuning, would this be possible with a Diablo Predator? Some cams require exhaust modification, does this mean headers or can run the stocks with hi flow cats and dumps? I'm looking for a cam that has a noticible idle so that the SRT8 will sound like its hittin under the hood. Help me out here finding a nice camshaft.

**Super T** · 02-25-2008, 03:51 PM

I just got a custom from PPP that's half way between a Track Warrior and a Track Warrior XL... at 700 rpm it shakes the car pretty good. At 1000, it doesn't shake at all. Haven't tried a whole lot in between. You'll need a custom tune loaded via a Predator for sure... exhaust would also be a good idea. Call Andy or Jeremy @ Power Ported, they can grind anything you want and help you decide what best suits your needs.

**MomsR/T** · 02-25-2008, 04:47 PM

i'm not actually understanding the whole "cam thing".................

If a lope is what you're after why not splice a ground wire to one spark plug with a 2-way switch to it so that with a simple flip of a switch you can actually turn your 8 cyl into a 7 cyl.

This will create an unusual sound that will high resemble a 1970's 3/4 race cam.................

If a performance mod is what you are after, a cam change which enharently compliments your inlet / outlet air needs is highly recommended. If the cam is allowing for more exhaust, an exhaust system which can move the gases WOULD be highly recommended.

I am a co-owner of Frank Racing Inc and this is our specialty.......

We do not specify nor build cams with a "sound" in mind rather we build cams with the specs needed to accomplish the task.............the task of running fast. The sound or "lope" is a by-product of the actions of the cam of opening and closing the valves at just the right time.

If you will call James at our shop he can talk you thru the process and make an appropriate combo for you.................

Our website is: www.Frankracinginc.com and you can find James at 877-fri-hemi and ask for James.......................

Lope?...........I dunno, but quick and a proper tune to work with our stuff we can provide!

Guest · 02-25-2008, 08:06 PM

First of all, don't feel bad for wanting a lopey sounding cam. We have conditioned ourselves all our lives to recognize a car as being "powerful" just by hearing a lopey cam. It turns our heads, and we recognize that, well... it ain't stock. I personally love the sound. http://videos.streetfire.net/video/5...b000d49963.htm

But, sound isn't everything, it is just a byproduct of many aggressive cams.

Some will argue that the lopier it is, the less efficient it is. Hey, I'm no cam expert, so I'm not going there.

Any decent cam will require tuning. Maybe just to make it idle right without stalling, or to pull the right amount of timing (or add) to make the most of the power it can. So factor in a dyno tune session into your costs. There are some cams that are so aggressive that you can't let the rpm's go below 1500 without worry of the car stalling. Obviously NOT a good choice for street applications.

A good exhaust is always a good idea, cam or not.

My new cam just arrived at the shop where I do all of my work, so out goes the "custom cam" I put in last year for a new one. I expect a nice hp/tq gain somewhere in the neighborhood of 30-40, and a nice sound to go along with it. I run electric cutouts (open all the time) so I know I'm free-flowing enough, possibly TOO much, so we'll have to see when the work is done this week.

The guys at FRI can take good care of you... even if they don;t care about the lopey sound (but you know they probably DO love the sound!)

**Super T** · 02-25-2008, 08:09 PM

^^^ To elaborate on what those guys said, if a cam has a nice flat power curve associated with it, it's going to have less "lope" (generally speaking). If it lopes like mad, it's going to have crazy high peak power but it will be a very narrow power band. Of course "very", "crazy high", "flat" are all subjective words...

**PPP-Tech** · 02-25-2008, 10:33 PM

One of our 5.7 cams and the dyno graph to go with it.

**BlaKDeviL** · 02-25-2008, 11:22 PM

thanks for the input but im not ur average dip**** that just wants a effin lope. I have worked with 2000hp NA motors. I understand the reason why they lope, jus sayin I havent seen any posts or videos that can actually tell if there is a noticible idle tone! Im looking for some camshafts that put down good power from idle or near idle to redline. I am leaning towards a Nitrous application if that helps narrow the field down. Are they any other dynos of different cam shafts? Ive looked at the PPP, KRC, HHP, CompCam sites and others but havent seen what they do to the 6.1 motors, most have been related to the 5.7L. Im tryin to have a low 12 NA car then 11 Nitrous.

**1fastsedan** · 02-25-2008, 11:39 PM

Originally Posted by BlaKDeviL

thanks for the input but im not ur average dip**** that just wants a effin lope. I have worked with 2000hp NA motors. I understand the reason why they lope, jus sayin I havent seen any posts or videos that can actually tell if there is a noticible idle tone! Im looking for some camshafts that put down good power from idle or near idle to redline. I am leaning towards a Nitrous application if that helps narrow the field down. Are they any other dynos of different cam shafts? Ive looked at the PPP, KRC, HHP, CompCam sites and others but havent seen what they do to the 6.1 motors, most have been related to the 5.7L. Im tryin to have a low 12 NA car then 11 Nitrous.

You should talk to Stu at Inertia Performance (formerly The Hemi Shop). He really knows these motors well. He has a cam called the SRT Max that is basically the biggest cam you can use with stock valves. Talk to him about nitrous and he can grind you on a better LSA.

**MomsR/T** · 02-26-2008, 02:36 AM

Originally Posted by BlaKDeviL

thanks for the input but im not ur average dip**** that just wants a effin lope. I have worked with 2000hp NA motors. I understand the reason why they lope, jus sayin I havent seen any posts or videos that can actually tell if there is a noticible idle tone! Im looking for some camshafts that put down good power from idle or near idle to redline. I am leaning towards a Nitrous application if that helps narrow the field down. Are they any other dynos of different cam shafts? Ive looked at the PPP, KRC, HHP, CompCam sites and others but havent seen what they do to the 6.1 motors, most have been related to the 5.7L. Im tryin to have a low 12 NA car then 11 Nitrous.

2000 hp N/A is very impressive...............

Our typical heads / cam / exhaust package has run 12.2's to 12.4's in about 12 different cars on all motor and HEMI31 ran an 11.4 with an additional 100 shot.

Our Tomahawk was used in each of these cars which is a reverse split, a-semi cam on a 114...............it lopes but usually people use the Diablo an idle it up to about 725 - 800 rpm which kills the lope.

The larger cams have a substantial amount of overlap which kills vacumm...............something a speed density car hates while an MAF car tollerates.

The low vacumm typically causes a rich condition but then when you put your foot into it everything goes lean. We've been running this cam in ported/non-port configs with great results.

We did make a couple of 113 lsa grinds but killed it because of overlap concerns...................

I feel the lope is mostly noticable in cars with aggressive cat-backs.................because the cam is usually squished by the cats/muffs/resos.

You can usually tell our customers cars have a TOmahawk in them, but if you want it pronounced, then you need a cat-back and keep the idle lower to lets say 725 rpm.

I also like our Littleboy cam which leans heavy on the exhaust lobe yet total duration is manageable and the 114 lsa is still there.................either way your overlap (lope) will need to stay tight for best cyl pressures using the dope.......or you'll just bleed it off............i suspect a 6.1 with either cam w/ stock heads will see a cranking pressure of about 190 - 195-ish.

You can see and hear these cams on our website : www.frankracinginc.com and look under the CARS section.

A Dynojet will show a typical combo like this to make 450 - 460 tuned (at the wheels)

Give us a call........

**PPP-Tech** · 02-26-2008, 11:20 AM

These are all heads/cam 6.1 cars with stock blocks and all other supporting mods. The first guy had some spark knock both on the before and the after runs, but he was still making good power up to that point.

**Super T** · 02-26-2008, 11:24 AM

Originally Posted by BlaKDeviL

thanks for the input but im not ur average dip**** that just wants a effin lope. I have worked with 2000hp NA motors. I understand the reason why they lope, jus sayin I havent seen any posts or videos that can actually tell if there is a noticible idle tone! Im looking for some camshafts that put down good power from idle or near idle to redline. I am leaning towards a Nitrous application if that helps narrow the field down. Are they any other dynos of different cam shafts? Ive looked at the PPP, KRC, HHP, CompCam sites and others but havent seen what they do to the 6.1 motors, most have been related to the 5.7L. Im tryin to have a low 12 NA car then 11 Nitrous.

Sorry... it's just that there are a lot of "average dip****s" :-P
I'll have dyno numbers within a month for my combo. But PPP has the national record for fastest 1/4mi time on all motor (granted it's a stroker), which is a lot of the reason I chose them... they have the installs and the numbers to back them up.