[Z06] Ported Stock Casting LS7 head
02-29-2012, 07:14 PM
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Ported Stock Casting LS7 head
I had a pair of stock casting LS7 heads ported, when I got them back I noticed the little ramp behind the guide in the intake bowl was gone. I noticed from pictures some heads have them and some don't, my question is what is the reason for these ramps and will this have a negative or positive effect on performance?
