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What is best cam for High rpm power?

Z34Phoenix

Z34Phoenix

Florida Tuner
Ok so the next phase after i topswap this summer is to install a cam, timing chain and tensioner. the mods i will have are:
-4t65e w/ 3.29's and 245/45-17 that help to give more grip and a slight gearing bump to an est 3.52 if compared to stock tire.
-Speed Daddy Headers
-Full 2.5" exhaust with single magnaflow muffler and resonator
-Ported Heads with Si Valves, viaton seals, L76 springs and retainers
-Ported Lower intake matched to Heads
-Ported GenIII M90 Inlet matched to TB, outlet opened up testing new shape... 3.8" pulley

Even NA, the car has plenty of power down low. So I want a cam that is going to make more mid to top end power. Cams I am looking at are the GT1/2 The XP i think is a little too much as i do not want to run a double roller chain. I will be putting on a new chain and tensioner at the same time. So what cams make more top end power?
 


Same reason why your speedometer is off when you get a smaller/bigger tire.


Also I love my NIC's ability to increase upper rpm power. The duration and LSA make a big difference. Just ask the lid and Cat-back modded ellisyuan catfish I gutted and grilled, with some pepper and lemon.
 
XP is great for higher RPM ranges.

Like stated, you can run this cam on a single. Just make sure you buy a new one.
 
Wotgtp said:
Same reason why your speedometer is off when you get a smaller/bigger tire.


Also I love my NIC's ability to increase upper rpm power. The duration and LSA make a big difference. Just ask the lid and Cat-back modded ellisyuan catfish I gutted and grilled, with some pepper and lemon.
Click to expand...


That still does not change the physical gear ratio Ed.
 
Well, it doesn't change the gearing in the differential obviously, but it technically changes how a car accelerates as if you changed them to however long it takes the tire to make a full rotation vs. how many rotations the driveshaft/input makes.

Just ask yourself, what makes the numerical gearing in a diff? How is it measured?
 


To make decent power up top with an XP cam, you'll need 130# springs...which you should use a double rollmaster.

I would really recommend that you consider a bigger cam, especially since you have to do head work. XPZ is awesome up top.
 
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