rebuilding my head couple questinos

[2gGst98]

Just like the title I am rebuilding a spare head that I have. It is getting a valve job and some slight porting. I am only going for about 250-300, I have a 14b, 650cc, a 190lb pump, front mount will be comming later, and I will be tunning with evoscan / ecu flash.

I am looking at getting some re grind 264 cams, I have read that these are a little over kill and my stock ones will be fine for what I want. Now I dont want all my extra power to come from just upping the boost. I would like some cams so I can have a little less boost with about the same power. Might help with traction when boost kicks, dam FWD. And by the way the head is getting some Manley springs, stock retainers.

So I guess my question is, am I on the right track? Would this be suitable to hit my goal without having to hit 18 - 20 psi? I would like to stay around 15 for now.

Any recomendations are welcome. thanks guys.

 

[2gGst98]

your funny man no answers? just kidding thanks for the luck much is needed.

 

[WES_393]

The stock head will be fine for 250-300hp. Cams alone don't necessarily make more power, they let the engine breathe better at higher RPM's, and typically at the cost of losing low end efficiency. It's a fair compromise for a larger turbo that spools later and gives more airflow at higher RPM. But considering the 14b will likely run out of steam before the stock cams, you'll trade low end power for very little (if any) gains up top. So with your goals, I'd put the money elsewhere.

 

[1gAWD92]

This is the OP just on my friends log in.
But if they allow the engine to breath better isn't that what makes power. I understand that I might only see 10 - 25 hp from them, but that is less boost I need to make my power. Am I right?
I have done some research and on a stock tune stock everything 264cams can see about 15 hp gain. I might be wrong but this is what I have read.

Thanks for the thought though.

 

[talon2gbuyer]

that set up sounds good to make the numbers you want. If you were looking for a better source of power without having to up the boost more, try a larger turbo. It may hurt you in spool up times, but the power will push your spleen into your ass.

 

[WES_393]

This is the OP just on my friends log in.
But if they allow the engine to breath better isn't that what makes power. I understand that I might only see 10 - 25 hp from them, but that is less boost I need to make my power. Am I right?
I have done some research and on a stock tune stock everything 264cams can see about 15 hp gain. I might be wrong but this is what I have read.

Thanks for the thought though.

They don't allow the engine to breathe better all around, just at a higher RPM range. For instance, with a larger turbo that hits full boost around 5k, max power at 6k, and needs to revs out to 8k, you want cams that will allow maximum airflow between 5-8k. On a closer to stock sized turbo that spools at 3k, makes full power at 5k, and starts to tire out by 6k, you want cams that deliver max airflow between 3-6k. If your turbo is done making power by 5k but your cams are just getting into their efficiency range, they will make little (if any) difference. Think of it as matching the cams to the turbo, not the engine.

Don't get me wrong, the stock cams are a fairly mild profile. But they are likely much more closely "tuned" to match the 14b powerband than a 264 cam. I'm not doubting that it's possible to see peak horsepower gains since the cams do open up the engine at higher RPM's. But IMO the very minimal gains plus the loss in low end power wouldn't be worth the time and money. I mean, you could spend some hard cash on quality 280 cams for your engine, but the 14b is still going to poop out in the upper RPM's. So why bother?

 

[2gGst98]

Ok that does make seince. does the 14b realy run out at 6k about? I might then go with a small 16g in that case. Is their another option to go about making the power with out only more boost? Dont get me wrong I dont expect 300 from only 15 psi or so. I just thought the cams would give a little more on top of that gain and keep some traction.

I need AWD!!!