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GOKOTA
Dodge Dakota
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8/30/2004
23:40:55
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 Subject: Cam selection
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I have a 2002 Dakota R/T CC with the following mods: K&N FIPK, ASP 52mm Throttle body, M-1 Intake, RT 1.92 Heads Non ported, H.S. 1.7rr G&S Motorsport headers & Dual exhaust, ASP 2600 stall converter & Shift kit. I plan on a cam installation next. I like the looks of the Mopar RT+10Hp and I do not want to loose any bottom end power but would like to gain in mid & upper range power. Is this a good choice or would a KRC 206 or 210 be better?
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gen1dak
Dodge Dakota
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8/31/2004
11:10:29
|  RE: Cam selection
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2600 rpm stall and you're worried about bottom-end power? The KRC 206 is gonna be your best bet of the ones you mentioned as far as lower rpm torque is concerned, but even that is gonna give up some, especially when the 1.7 rockers are factored in. Shouldn't notice it much with that stall rating, however.
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Tiago A. G
Dodge Dakota
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8/31/2004
11:46:04
| RE: Cam selection
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I just bought the Mopar R/T+10HP from summit and will be installing with the mopar 1.7 rrīs that I already have.
Hope they are worth for the $445 bucks.
GOKOTA, you will have to buy better, stronger valve springs for your aplicattion and donīt forget to replace the stock ones because of the higher valve lift your engine will have.
Like Gen1 said, donīt worry because you have the converter...
Krcīs cams are a good choice also and they are cheaper.
Tiago A. G
Black 98 C/C R/T
Supercharged with Nitrous and alcoohol as fuel
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00 RT/BC
Dodge Dakota
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8/31/2004
14:24:02
| RE: Cam selection
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Just wondering, what is the "camiest" cam they make for the R/T, lets say someone wanted there R/T to sound like it was about to stall what cam would you recommend.
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gen1dak
Dodge Dakota
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8/31/2004
19:18:09
| RE: Cam selection
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A custom grind. 108 degree lobe separation, 240 degrees duration at .050 with .550 lift. Something in that range, but it'd need custom electronics to say the least.
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b1llyw
GenII
8/31/2004
21:23:05
| RE: Cam selection
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Gokota, the 206X is a good choice. Power comes in hard down low and will still pull up top.
Bill White - KRC Performance
'95 CC 4x2 - 408, 5-speed, 8 3/4
'04 Liberty, 4x4, 3.7, 5-speed, LSD
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GOKOTA
Dodge Dakota
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8/31/2004
21:31:21
| RE: Cam selection
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This is a daily driver and I really don't need a power band that starts at 3000 rpm. I can buy the R/T+10 cam with lifters for $370.00. If the other cams are better, I don't mind spending the extra money. I bought the R/T heads complete. I beleive they have the R/T springs already.
Tiago, if you install that cam soon, let me know how you like it.
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GOKOTA
Dodge Dakota
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8/31/2004
21:42:00
| RE: Cam selection
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Bill,
Will the 206x be compatible with a super charger at a later date? Will it work with 1.7 roller rocker arms? Actually, I will be replacing roller rocker arms, would it be better to buy 1.6 or 1.7? The truck has 5000 miles on it. Do you think I need new lifters or could I use the existing ones? Can you tell me the powerband range? Thanks in advance for your help. I don't have a lot of knowledge with regards to cams.
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Dakdoc
Dodge Dakota
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8/31/2004
22:10:38
| RE: Cam selection
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The 206 X will not be a good choice for supercharging.
It is made for all motor setups with 9.0 compression or preferably higher.
The 206 can be ground to lower the lobe lift to around .536 using your 1.7 roller rockers.
The powerband in a 1.6 ratio 360 is 2600-5500 rpm, the 1.7"s would put it around 2800, especially since those heads are larger than stock.
I would grind a 206/206 on a 108 lobe sep plus 4degrees at 104 installed with your combo. Excellent peak torque and mid range, yet still suited for Nitrous use heavily. Hope this helps!
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GOKOTA
Dodge Dakota
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8/31/2004
22:45:12
| RE: Cam selection
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Dakdoc
Would the Mopar R/T+10 Cam be better suited for my needs I beleive it,s spec's are 208/216 dur.&
.467/.482 lift. I thought the 1.7rr helped with torque? I have to change mine with the cam as the are non adjustable. I really did not want to order a custom cam. Thanks
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Greg
Dodge Dakota
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8/31/2004
23:00:09
| RE: Cam selection
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Just thought I'de put in my $.02... Get rid of those stock lifters as soon as you can and go with either performance crower or crane lifters... I say this because I did a cam swap on my V6 and have to run a much heavier preload on my rockers because I went with the so called "performance" mopar lifters... I noticed that I had more power when I would run my rockers on a 1.5 turn preload setting when I should have had more power and response at the .5 to .75 preload setting... When I brought up the question on this Sam from socaldakota said it was more than likely the lifters... He said he had seen it before with the lifters on camier type cams and after the people would switch over to the crower's they would see much better power and throttle response...
Also if your running a camy type cam you may have to do some work to your heads so your springs "which I beleive the r/t springs are rated at .512" lift capable" will have the correct height and cushioning distance... You'll more than likely have to go with springs that your camshaft dealer recommends to prolong the life of your cam of choice and so forth...
Might want to while your into everything anyway go ahead and do a port and polish job on your heads as well to really wake the air flow on up...
Depending on the cam, you may also have to go with heavier flowing fuel injectors... I know after you go so big they recommend stepping them up a bit to atleast a 23lb an hour rating...
I would definately go through everything with your cam provider after deciding on the final cam profile to make sure on everything else to get the most potential hp out of your motor...
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Tiago A. G
Dodge Dakota
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9/01/2004
08:58:46
| RE: Cam selection
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Gokota,
I will not be intalling this camshaft before november.
Thatīs because Iīm planning a new motor setup with forged internals , SFI damper, Windage tray, all engine ARP bots,new cam, etc..
Iīll have to make a custom order from ross for a set of forged pistons to handle the hight amount of Boost+Nitrous that will be used with alcoohol.
Ross told me that It takes one month to fab. the pistons and I believe itīs gonna be one more to be here in my country installed with the truck running properly.
Anyways, I believe the Mopar R/T+10 Cam is a good cam and Mopar Computer friendly, nothing radical but will free a great amount of ponnies.
Do you guys have any idea whatīs the maximum RPM the Mopar R/T+10 cam will spin with the 1.7 rockers and the power band?
Gokota, I will need to use Steel Pushrods to handle this cam-supercharger-nitrous-alcoohol combination since those Moparīs I have are made of aluminum.
Probably would be safier to your truck using steel pushrods also if you donīt have them yet.
Tiago A. G.
Brasil
Black R/T C/C
Supercharged with Nitrous and Alcoohol as fuel
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00 RT/BC
Dodge Dakota
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9/01/2004
11:37:41
| RE: Cam selection
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A custom grind. 108 degree lobe separation, 240 degrees duration at .050 with .550 lift. Something in that range, but it'd need custom electronics to say the least.
I don't know exactly what that all means but... *drool* can you imagine.
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gen1dak
Dodge Dakota
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9/01/2004
17:43:30
| RE: Cam selection
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Just my shot at a cam so lumpy (for a 360) it'd make you think you were at a tractor pull. That thing would idle down the road with such a lurch it'd look like someone had popped the cluth and couldn't get it back in. Hangin' the valves open (on a street engine) for a long time, pretty high, with a vicious mid-range. Man it would sound nasty!
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00 RT/BC
Dodge Dakota
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9/01/2004
19:59:30
| RE: Cam selection
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That's how I imagine my 408 stroker, which this truck will be eventually. I don't really care if it is ridiculous and maybe bordering on non dirveable but to me that is what a high performance beast should be. Would you change the cam any for a 408 or would that cam give the same effect for a 408 as well as a 360.
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gen1dak
Dodge Dakota
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9/01/2004
21:25:05
| RE: Cam selection
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Actually, a 360 cam would do in a 408, but being a stroker, the 408 would really benefit from a different cam profile that'd take advantage of the added stroke. Where the 360 would be more of a screamer over 6,000rpm, the strokers tend to not be quite so rev-friendly. That's not to say they can't get up there, but it's usually not where they're most comfortable, so you look at a powerband under 6grand. I know the KRC guys have been working on profiles that best compliment the 408, and I'd definitely go for something along those lines (come to think of it, that's not too far from the rump-rump cam I mentioned....well, mine's a bit wilder).
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