Second guessing my 268

[AlbertaRamFan]

Hey guys.

New over here but been kicking around the other forums a while

I've been browsing around here and am kinda second guessing my cam choice.
I bought a 268 to put in here with the usual springs and pushrods.
I'm also going to be doing ported stock heads at the same time.

Question 1: Can I run it off just my superchip until I get some datalogs for a custom tune?

Question 2: Is the 268 gonna leave me upset at the racetrack? This truck is mostly a daily driver but I'm getting into racing it more and more.

Thanks for letting me dip into the pool of knowledge

 

[AF_Hemi]

1) No you will not be able to run the cam at all without a custom tune. It wont even idle.

2) You should be pretty happy with the 268 at the track. It pulls reallllly good toward the higher rpm range. If you can get 4.56 gears and a TC (i'd recommend 2800 stall), they'll give you all the low end you're missing out on with the 268. Its a pretty good choice, especially when paired with other mods.

You'll want to adjust your shift points as well. Try to be crossing the 1/4 at the peak of 3rd gear before it shifts into 4th and you'll see some really solid times.

 

[AF_Hemi]

by the way, you can and should get a baseline tune from your tuner before you put the cam in. I assume you're using DSP? You'll send them the current tune on your truck (probably the 93 tune). they tweak it based on what previous experience with the 268 tells them and they send it back to you. You'll load it into the truck after the cam swap so you can start it. Then you do datalogging and they perfect the base tune.

 

[KGBIGCOUNTRY]

The 268 is a track cam for sure not 100% on how it will act in a QC but I know some of the fastest trucks that are RC are running those. That cam has a very good mid range and great topend on it. The main concern is running it on superchips, you will have to get a piggyback tuner ontop of that the adjust idle fuel and what not. I do not see a TQ converter in your sig which is also gonna help that cam alot. Just ask away we can help ya out on this bud.

 

[AF_Hemi]

If you're planning on running this thing with superchips, STOP. It wont dont do it. period. unless the piggyback you have is a SC/SCT stack. The 268 is a very aggressive cam that REQUIRES custom tuning.

there are several guys runnin great times with the 268. Its probably the best track cam out there. You just need gears and a TC to get you into the power band of the 268 faster

 

[truckin151]

The 268 is going in my truck, for a larger truck like yours the 260 might have been a better choice as it is a low end cam. Unless you got the mods to make up the lowend and do the tuning I would think long and hard about it.

 

[AF_Hemi]

I still think the 268 is going to outperform a 260 on his truck as long as he gets gears and a TC, especially with the ported heads

 

[truckin151]

Yeah its not a bad cam if you have the supporting mods to use it. But from the sounds of it he is out a tuner, tc and gears... all of which are a necessity to get this cam running right. In a heavy 4x4 quadcab the 260 will give him way more lowend tq and should run on a canned tune

 

[AF_Hemi]

If I were him, I would wait on the cam all together. Id get all the supporting mods lined up first. First gears, then TC, then a tuner to support the custom tune (since you already have SC), THEN go with the cam. Because you're right... its gonna be a dog until he gets the supporting mods to go with that cam.

 

[KGBIGCOUNTRY]

All said above is good advise. You can sell your superchips and be bout 100 for another tuner with the ability to custom tune. What year is your truck?

 

[AF_Hemi]

If hes got a 3865 he could trade it for a DSP + a few bucks. If hes got a 3815 he'll be payin about 100. Expect to get about $150 for the 3815, and pay about $250 for the DSP

 

[KGBIGCOUNTRY]

Cust tunes for the DSP tend to be right pricy correct? There are a few ones doing it, im assuming Marty is doing your AF? I went with Sean and SCT but the lack of SCTs trans control is killing me.

 

[AF_Hemi]

Yeah i went with Marty. $250 for lifetime tuning.

 

[glass3222]

Cust tunes for the DSP tend to be right pricy correct? There are a few ones doing it, im assuming Marty is doing your AF? I went with Sean and SCT but the lack of SCTs trans control is killing me.

Sean does custom DSP tunes as well

 

[AF_Hemi]

you can also stack the Superchips/SCT. You load the trans control you want with the SC, then load the engine tune with SCT. the only downside of that is SCT takes a snap shot of everything on there (SC tune included) and calls it the base tune. you cant adjust the SC tune once you've stacked an SCT on top of it. This isnt a problem for most because they find the trans settings that want and never change them anyways.

DSP also does trans tuning, but not quite as good as SC.

 

[truckin151]

Not necessarily AF... DSP now has custom tuning for the trans on some years. Meaning instead of using the user controls for trans tuning you caan have a CMR tuner do the engine and trans (1st - 5th and WOT) custom tuned.

 

[AF_Hemi]

^^didnt know about that. thats pretty sweet!

 

[truckin151]

Yeah niether did I but I guess it ws just released not to long ago with their latest CROM

 

[AF_Hemi]

man i hate seeing all these updates about new stuff coming out for trans tuning, cause i'll never see it. lol. the first company that can tune an 03 trans gets my money

 

[Off_Road_Teacher]

If you are going with the 268 do yourself a favor and have a tuning option taken care of prior to install so you can be ready to go as soon as the install is done. It will not run on SC.

As far as if this is the right cam for you, if you have the supporting mods to make it run at its best then you can get some good performance out of it even though it is a cam that usually is installed in lighter trucks than your QC. If you are just doing the cam without the other mods that some of the others listed you might want to look into a more torque oriented cam. Just really depends on what your plans are for supporting mods to go with that cam.