Thread: Supporting mods for cam?

Stock, my car pulls hardest around 50 km/h (30mph) obviously. If I am to give it some gas It's usually until 2nd gear if in town. I'm not just looking for the power to get to traffic speed.


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Let's say I went with the XP cam. What rpm should I shoot for? Is it just a matter of how much I want to spend on springs, pushrods, etc? Or will I need other supporting mods aside from them? I know there's more benifit to running such high rpms, but it must cause a lot more stress. So should I shoot for 6200ish rpm with just the 90#ers and retainers for example?

Currently I'm just going off of zzp's recommendation for the XP for supporting mods


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Originally Posted by Daven

Let's say I went with the XP cam. What rpm should I shoot for? Is it just a matter of how much I want to spend on springs, pushrods, etc? Or will I need other supporting mods aside from them? I know there's more benifit to running such high rpms, but it must cause a lot more stress. So should I shoot for 6200ish rpm with just the 90#ers and retainers for example?

Currently I'm just going off of zzp's recommendation for the XP for supporting mods


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I have a thread about this when i was doing my cam install. Basicly to get the most out fo the xp cam yes you would want to run with most of zzps recommendations. 140 springs, tit mod retainers, machined roller master, machined oil pump cover, viton valve seals, 60 # injectors. As said because the xp cam is a high rev cam you will see most its gains at 6000-6400 rpm so you need to correct supporting mods to raise your shift points that high. But some do run it with 105s and a stock chain but imo stock chain is belongs in a car grandma drives on sunday. But if you went that route you would have to lower your shift points and raise your idle. I just couldnt see going threw the trouble of installing a cam and half asses it so i went all out. Rods and lifters and stay stock.

I might be willing to sell everything i just purchased for the swap from zzp cheaper than they sell it for because i have run into some financial issues and dont know when ill be able to install them anyway. I have everything you need besides gaskets that can be purchased at any auto parts store. I spent around 1300 and have the receipts. Plus i had the crank gear professionally machined so you can run it no problem. I would probly take 1000 for everything.


Oh also i just noticed your car is an 07. You cannot tune the 07 pcms really. I think will is one of the only ones that may be able to or you can run an 04-05 pcm but i believe your speedo or something will run backwards.

I think my shift points are set around 6k with the XP cam. I have an XP, 105#ers and a stock timing chain which is getting swapped out for a double roller I think since I am going to be hunting down s4 heads and 150# springs with an st5 or xpz

You not liking the xp with the turbo?

More powa! He's really trying to break that 1" chain

Originally Posted by Ginseng

Oh also i just noticed your car is an 07. You cannot tune the 07 pcms really. I think will is one of the only ones that may be able to or you can run an 04-05 pcm but i believe your speedo or something will run backwards.

It's your gas gauge


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Originally Posted by Theaceofspades

It's your gas gauge


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Ok, thankyou. I knew it was one or the other.

Also overkills gas gauge reads right. He is the only one that figured that out. Any other vendor needs an 04/05 PCM and that gas gauge will read backwards


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I thought hp tuner supported 07?


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No sure. Maybe someone with it will chime in.

Originally Posted by REDCOMPG

More powa! He's really trying to break that 1" chain

Heck yeah!