efi xe264 vs nx264 cam

emagdnim

Active Member
Feb 5, 2003
391
15
28
Hello ,
Main reason i have this nx264 cam right now installed in my car is because i got a cheap deal on it and it works well with the SD computer. Now i was comparing specs from the comp cam website between the xe264 and the nx264 .. they call the xe264 a mild street performer and a good stock replacement cam , they call the nx264 a high performance street with lopey idle (recommended nitrous or blower). My question is the only difference in the specs is more exhaust Duration At 0.006 Tappet Lift and different Valve Timing At 0.006 . How much does more exhaust duration hurt for a NA application? Since i have this cam in my car i want to understand it more!! Also comp cam mentions lopey idle but the idle isnt all that lopey imo.
Heres complete specs!


Grind Number FW XE264HR-14
Description

Intake Exhaust
Valve Adjustment 0 0
Gross Valve Lift 0.512 0.512
Duration At 0.006 Tappet Lift 264 270

Valve Timing At 0.006
Open Close
Intake 22 62
Exhaust 73 17

These Specs Are For The Cam Installed At 110 Intake CL
Intake Exhaust
Duration At 0.05 212 218
Lobe Lift 0.32 0.32
Lobe Separation 114

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Grind Number FW NX264HR-14
Description
Intake Exhaust
Valve Adjustment 0 0
Gross Valve Lift 0.512 0.512
Duration At 0.006 Tappet Lift 264 276

Valve Timing At 0.006
Open Close
Intake 22 62
Exhaust 76 20

These Specs Are For The Cam Installed At 110 Intake CL
Intake Exhaust
Duration At 0.05 212 218
Lobe Lift 0.32 0.32
Lobe Separation 114