zkeller

iTrader: (47)

I did some measuring up against a stock lower and here's what I came up with:

The stock secondary ports are 1.490" in diameter. There is a chamfered edge at the top, so the port is actually smaller than it looks from the top. I took the measurements down past the chamfer about half an inch into the port.

The Groundzero intake's secondary port is 1.55" in diameter, no chamfered edge.

Same chamfered edge in the primary. Stock is 1.170", Ground zero is 1.210"

Just thought I would share that with you guys.

There is plenty of metal there to extrude/hone.

mad_7tist

how about getting a beaker and filling the ports with water. then comparing the runner volume to eachother. the gz should be alot closer

oorx7

iTrader: (2)

vary good idea and would be very interested to find out the outcome.

the_glass_man

iTrader: (2)

Take them to a flow bench! Please!!! Maybe you could get your hands on a RE manifold to compare?