Ferrea Valves - 6000 tulip & 6000 normal
#2
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Join Date: Nov 2001
Location: College Station, Tx
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It's the transition from the valve-stem to the back face of the valve. Tulip has more of a radius to the transition, while the other (nail-head I am assuming) is pretty much just a 90degree angle. Tuliped should flow a bit better, but may be a bit heavier (though not much)
#3
FormerVendor
iTrader: (13)
Originally Posted by Mike22ca
What is the difference between these:
Exhaust - 1.600" Tulip, 6000 Series Competition Valve
&
Exhaust - 1.600" 6000 Series Competition Valve
?
Exhaust - 1.600" Tulip, 6000 Series Competition Valve
&
Exhaust - 1.600" 6000 Series Competition Valve
?