ETP LS7 4" bore flow numbers
I have a general question a bit off topic that maybe you could answer.I searched your site at the ls1 heads.I see your intake always flow extremely well...but the exhaust side is lacking much.Especially with that high of an intake flow.Is there a reason for this?
Originally Posted by Drewman
So are these backordered like everything else? Does the same "8 week" delivery estimate apply?
I'm not trying to flame you guys, but I'm hearing some really bad press from your customers who have been waiting WAY longer than the quoted "8 weeks". I've been on the fence about ordering a set of your new casting heads since they were introduced (~6 months ago) but I've waited to see how they perform and hold up in the real world. Since this time I've only heard of a couple of heads being delivered which GREATLY concerns me. As it stands now I will not place an order with you guys (or from anyone else) unless I know I'll have the heads in <1 month. I still have a couple of months before I must have my new heads and I sincerely hope I can give you guys my business, but if you're past track record is any indication, it does not look good for me owning a set of ET heads.
Please work on getting your t/a time down to a reasonable number so guys like myself, who have really supported these products from the start, can enjoy using your heads rather than just looking at pretty pictures and specs.
Originally Posted by ddnspider
I see your intake always flow extremely well...but the exhaust side is lacking much.Especially with that high of an intake flow.Is there a reason for this?
TECH Apprentice
Joined: Oct 2004
Posts: 329
Likes: 0
Exhaust ports should be flown with a pipe in place that is curved similar to a header tube. It should be a common size which will be used on that port. Flow dynamics without the pipe in place don't mean much, port should be designed with the extension to the port in mind - or the header tube. Same on the intake side.
I for one dont like that the LS1 drops to 325CFM with the intake attached. But hey its better than nice head LS6 ported with a modified FAST 90 attached to it. So its damn good from factory. We can do better tho.
Someone will find a way o get 340-350CFM out of the LS7 system with the LS7 manifold, whether it is modifying the runner, or whathave you.
I for one dont like that the LS1 drops to 325CFM with the intake attached. But hey its better than nice head LS6 ported with a modified FAST 90 attached to it. So its damn good from factory. We can do better tho.
Someone will find a way o get 340-350CFM out of the LS7 system with the LS7 manifold, whether it is modifying the runner, or whathave you.
