266 Cam - '12 Ram

[hemifever]

Although I'm impressed with the dyno numbers, I'm guarded opmistic. What I'm hoping to see is a dyno result after about a 1000miles of street driving. From my personal experience with drivability issues at that power level, the tweaking that is gonna result in power losses. Hunting idle, stalling, engine stopping while driving, etc. It's easy to loss hp/Tq with some small adjustments.

With this one, we dialed in the idle and part throttle about a month ago. (doing the same with a comp 272 cam truck too). Dyno is the last part vs the first part so the daily driving piece is already set.

I still think these are too big of a cam for a truck and I feel pretty good we'll see better track numbers with smaller cams than these. I don't think the avid track racers are targeting this size cam. But we'll just have to see what the results start showing us.

And I got Diablo to add some key tables in for the cam tuning this week so it'll help the tuners get this down a bit nicer.

 

[Canadian_Ram]

I am itching to throw a cam in my truck..

 

[BlownGP]

Hope who ever tuned it did a good job.

 

[R/T_Fire]

I still think these are too big of a cam for a truck and I feel pretty good we'll see better track numbers with smaller cams than these. I don't think the avid track racers are targeting this size cam. But we'll just have to see what the results start showing us.
.

Its kinda a general question for ya but would this be a decent cam for a Forced induction motor like a Twin Turbo forced induction. And also what is a good range of cam size for heavy bolt on type motor and TC in the trans.

 

[Dubstep Shep]

To much overlap and to large, will bleed boost.

The cam design will depend on your setup and turbo size/sizes. May need a tighter split or wider split depending. Now if it's a blower the cam split will stay wide, wider then N/A

Second question will depend on the size of the converter, mods used and if if cam utilizes a phase limiter or not.

Who said anything about boost?

This truck is NA, is it not?

 

[Sillygoose]

read the post above his, bro

 

[R/T_Fire]

Who said anything about boost?

This truck is NA, is it not?

I did, it was a question cause i eventually plan on putting twin screws on my truck and wondering how different the cams would be in the N/A vs boosted motor. It tells me I cant do a progressive build, that its kinda a all or nothing thing with the internals.

 

[Hemi_Express2013]

With this one, we dialed in the idle and part throttle about a month ago. (doing the same with a comp 272 cam truck too). Dyno is the last part vs the first part so the daily driving piece is already set.

I still think these are too big of a cam for a truck and I feel pretty good we'll see better track numbers with smaller cams than these. I don't think the avid track racers are targeting this size cam. But we'll just have to see what the results start showing us.

And I got Diablo to add some key tables in for the cam tuning this week so it'll help the tuners get this down a bit nicer.

Did you leave the vvt monitor on? Mine is on but the monitor doesn't run.

Smaller cam and very tight (112lsa) seems to be the way to go.

 

[R/T_Fire]

That is where you do a compromise between power now NA and something that will also work well with boost. Also as long as you know the direction your going this it easily attainable to have both solid power now and when boosted.

Jay

True, ask my GF I don't compromise well
Most likely I will build the current motor up with a strong N/A set up and cam
and then buy a replacement motor to build on a engine stand and design the twin set up. I think the computer tuning is still lacking a bit or I just haven't found the info on it yet.

But as for cams I will swap in a smaller cam built more for when I put the TC in and the other minor bolt on items. Goal is still mid 12's in the quarter. then I'll build the high HP street beast twin turbo and hopefully in the next year to 2 years someone will have cracked the ram coding better.

I tend to do alot more planning and educate myself and feel comfortable before I pull the trigger and spent a ton of cash on things that dont work.

 

[Dubstep Shep]

I have my doubts that a twin screw built motor with a cam and I imagine full bolt ons is going to work with the stock transmission. That was why I decided to hold off until someone comes up with something better for the eight speeds.

 

[hemifever]

Did you leave the vvt monitor on? Mine is on but the monitor doesn't run.

Smaller cam and very tight (112lsa) seems to be the way to go.

yes, the vvt config is fully functional

 

[sicmadek]

Who said anything about boost?

This truck is NA, is it not?

Moron

 

[Hemi_Express2013]

yes, the vvt config is fully functional

Nice Sean, sign me up!

 

[Canadian_Ram]

how much Sean and can you tune me locally

i was going to buy a 55" 4k UHD TV but i mean i guess i could wait...

 

[hemifever]

there's a handful more cams out there of all kinds of different spec. I'd recommend to anybody looking at a cam to sit back a little longer and lets see what the different grinds are going to do.

 

[greychevy]

there's a handful more cams out there of all kinds of different spec. I'd recommend to anybody looking at a cam to sit back a little longer and lets see what the different grinds are going to do.

^^^My plan haha

 

[Hemi450hp]

The 4th gen builds are starting to get exciting again. I think we are finally going to see that first 11 second N/A 1/4 mile pass soon. There are a handful of guys that have setups that are capable of putting them very close to that mark.

 

[R/T_Fire]

I have my doubts that a twin screw built motor with a cam and I imagine full bolt ons is going to work with the stock transmission. That was why I decided to hold off until someone comes up with something better for the eight speeds.

I have a 6 speed, and the trans is all part of the build in my book, same with brakes and possible the rear axle.. it all works together to get a well balanced tuned set up so gotta do it all. This will be a long planned out project that will probably change and evolve as tuning and cams, and heads, trans etc etc are learned and beefed up. not looking to pioneer a twin turbo set up for the most part, but the biggest thing that hold me back is the tuning ability especially when the cam guys say sit back and wait to see what comes out.. it tells me there is still alot to learn about these motors and cams and tuning. I have been talking to a shp that specializes in turbos and such on high end cars and race cars.
They tell me STS already has something that will work in their rear mount turbo system, but not sure if they know the tuning. they were working on a brand new AMG 63 putting bigger turbos on it when it only had 400 miles on it.

 

[Hemi_Express2013]

The 4th gen builds are starting to get exciting again. I think we are finally going to see that first 11 second N/A 1/4 mile pass soon. There are a handful of guys that have setups that are capable of putting them very close to that mark.

Matt, I have no doubt you are on the right path. I think your cam's LSA is perfect for the job, tuning it might prove hard. As I told you on the phone, Comp Cams are dyno queens.

 

[xrsman]

yes, the vvt config is fully functional

Any chance on seeing an 8 speed trans tune soon? Lol

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