Hummer Forums by Elcova

Hi guys,

I compare some aftermarket headers to the stock one.
In the past, we had use tens of headers made by SMA Hummer.
They are too much closer to the spark plug wires, but they works great about engine power.
We had buy some headers by Edelbrock, Gibson ? they are nice, they looks great better than the SMA because they has better curves and greater clearance to the spark plug wires, but the port to the engine head are about 3 mm in diameter smaller than the stock or the SMA ones. So the customer don?t like it about engine power.
So, what you suggest for me?

Thanks in advance!:beerchug: :beerchug: