oneblackvette

Will Kooks 6600 LS2 headers work on LS7 heads?

vettenutchas

I doubt if headers made for LS2 heads and ports will match up very well with the larger exhaust ports of LS7 heads. Why not just call Kooks and ask them?

0MarylandSpeed

Yes, they work fine as far as fitting. They have a round port, which is bigger than the D-port on the LS7. It is not a perfectly matched port..but that is no big deal. LS3's have D-ports also, and most of them have headers with round ports. If you are getting some porting done, the round port is better as it prevents the header port from overlapping the port work.