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Stock 4.6 cam?
Posted: Thu Mar 04, 2010 11:21 pm
by Tony Andrews
Anyone know the duration and valve timing of the 4.6 oem camshaft specifically @ .050 lift?
Posted: Fri Mar 05, 2010 1:23 pm
by badger
No, but I can give you zero-lift figures if that helps?
IO - 14btdc
IC - 70abdc
ID - 264
EO - 64bbdc
EC - 20atdc
ED - 264
IP - 118
EP - ?
LCA - 115
Lift - 0.41"
can't remember where these came from, so no guarantees as to accuracy, but my memory suggests they came from L/R publications.
Posted: Tue Mar 09, 2010 12:46 am
by Tony Andrews
Yeah, I have the s/s numbers "badger" - someone posted those over on BV8. Just curious - as more accurate to compare with .050 lift.
For it's purpose, the factory folks provided a decent grind with the stock heads. In fact, the shorter 112 exhaust lobe appears to be perfect for n/o.
I can't see any reason to swap out stock cam (street car) unless using headers (which I have), larger exhaust and big valve heads. Me thinks n/o will provide the biggest "bang" for the buck!