Second guessing my 268

[truckin151]

Also, the new heads will add some extra umph to any performance cam, so even if you choose a didfferent cam than the 268 and go for something with more lowend they will still help.

I really think that your truck would be better off with a lowend cam like the 210x or 260 rather than a a mid to top end cam. In order to get your truck moving you need the lowend, if you were a 2wd I would say otherwise but with the 4x4, you need it.

 

[AF_Hemi]

I dont know truckin, i think the 210x might be too much low end for him. This is a track truck, not a fast street truck. The 210x wont have a whole lot of high end.

the 260 is not near aggressive enough. Its a good cam choice for those not wanting custom tuning, but shouldnt even be an option for someone getting custom tuning.

 

[truckin151]

The 210x is a track cam as well... One of the guys over on HTC swapped out his spartan for a 210x and went from a 13.3 to a 13.0 first time out with the new cam and tune. The gobs of lowend that that cam has really helps at the track, and if you have the shift schedule setup right it will keep you in third through the traps.

His truck really doesn't strike me as a strip truck though... Now if it is truely going to be a "track truck" then the lift needs to be ditched, and the trires need replaced from the offroad type to a street/DR type.

 

[AF_Hemi]

all valid points. i cant argue with that. hopefully you can change the OP's mind like you changed mine.

I have the 210, and its freakin fierce. I can only imagine with the 210x is like...

 

[truckin151]

Im not trying to change anyones mind. If he wants to stick with the 268 then great, he just needs the remaining supporting mods to get it to run right. If he decides to swap it out for something that still requires tuning but is a lowend monster IMO that would suit his truck better as long as he has tuning available AND can adjust his shift points so he stays in 3rd through the traps

 

[AlbertaRamFan]

Thanks for the replies guys.

I have full intentions of doing a stage 2 valve body, tq converter, 4:56 gears and I WAS planning on stacking the sct on the sc.

I guess I should have specified all of that beforehand.
I had originally chose the 268 as the 260 just didn't suit what I wanted, the truck pulls great out of the hole but slows down a lot at mid to high rpms. That and I wanted something that isn't going to leave me shreading tires on the **** local track we have. I wouldn't mind looking into the 210x but I can't seemed to find much locally and crossing the border with parts is a huge pain in the ass lately.

I really appreciate everyones opinions and would love if anybody could put me in touch with someone who does custom tunes?
Thanks again guys

 

[AF_Hemi]

Since you're doing SCT and the 268, without a doubt go with sean (hemifever). You can buy the tuner and lifetime tuning from him for $375.

 

[RubberFrog]

The 268 is going to suck in your truck.

 

[AlbertaRamFan]

Now I'm curious rubberfrog

Is that from personal experience or more opinion based?
Not trying to be a smart ass just want to do this right the first time around

 

[Off_Road_Teacher]

I had originally chose the 268 as the 260 just didn't suit what I wanted, the truck pulls great out of the hole but slows down a lot at mid to high rpms. That and I wanted something that isn't going to leave me shreading tires on the **** local track we have. I wouldn't mind looking into the 210x but I can't seemed to find much locally and crossing the border with parts is a huge pain in the ass lately.

Have you seen this dyno chart comparing the 260, 268 and 273? It shows that the 268 doesn't really have any power advantage over the 260 until you get up to around 5500 rpm. Just something to think about.

 

[KGBIGCOUNTRY]

Thats good info teacher. Who on here had spun there motor past 6200? I know I bump my shift leaver at 6k and it shifts a split second later at 6200 any past that it gets into the rev limiter.

 

[Off_Road_Teacher]

That chart really shows that even though the 260 is considered a torque cam with all it's power at the bottom end that is actually has as much or more power than the 268 through almost the entire part of the power band where our trucks run.

 

[AF_Hemi]

Seriously kyle,

I'd be lookin at the KRC 210x

 

[KGBIGCOUNTRY]

You could always sell the comp 268 if you decide to go towards something else. That cam also loooovves spray from what I gather.

 

[truckin151]

Thanks for the replies guys.

I have full intentions of doing a stage 2 valve body, tq converter, 4:56 gears and I WAS planning on stacking the sct on the sc.

I guess I should have specified all of that beforehand.
I had originally chose the 268 as the 260 just didn't suit what I wanted, the truck pulls great out of the hole but slows down a lot at mid to high rpms. That and I wanted something that isn't going to leave me shreading tires on the **** local track we have. I wouldn't mind looking into the 210x but I can't seemed to find much locally and crossing the border with parts is a huge pain in the ass lately.

I really appreciate everyones opinions and would love if anybody could put me in touch with someone who does custom tunes?
Thanks again guys

Im pretty sure that its not pulling great out of the whole if you are missing the mods to get you the lowend tq. What are your 60ft times? That will tell you if its getting out of the whole and pulling great.

Even with the mods you listed, I still think the 210x or other lowend tq cam is going to be better for you.

 

[AlbertaRamFan]

After talking to you guys who all seem to have the real world experience I'm thinking maybe the 268 is going up for sale.
I'm gonna look into the 260 or 210x if I have anyone interested in this cam otherwise I guess I'll have to stick with the 268.

I wish I would have asked you guys before I pissed away the money on this 268

Outta curiosity does anybody have a link to KRC cam dynos?

 

[AF_Hemi]

just call them.

A 260 is VERY mild compared to the 210x. Just to give you an idea, the 260 can be run on a canned tune. its nothin special. the 210x requires a ton of adjustment with a custom tune. it wont even start, let alone idle without a custom tune.

If you want performance thats all motor -- get the 210x. period

 

[Redtruck-VA]

I would also like to point out that ported and polished BV heads without the supporting mods will kill low end torque due to the lower runner speeds. Heads like cams must be matched to the rpm range in which the engine is intended to be used. I have a 2800 stall TC. I need an engine that has a power range 2500 thru 6000 rpm with a torque peak around 5800. All the parts must compliment one another or it is just a pile of parts. It ain't easy otherwise everyone would have a street rocket. You'll need some really excellent input and/or some experiementing. I rely on a professional engine builder for my input. Good luck guys.....

 

[Off_Road_Teacher]

Dumping the 268 is a good choice. There is a guy on another forum who currently has a thread about having put the 268 in his QC and now wanting to take it out bc it just isn't performing in his heavy truck like he had hoped.

 

[Redtruck-VA]

IMO, over camming is often a problem when dealing with vehicles that are heavy under geared and are not aerodynamic. Everything is against the quads when compared to the other more common street performers. Good luck to all. Bigger the challenge the more gratification. Go for it!