How much hp loss from 1 3/4'' headers on 402ci LS2?
 

Just wondering how much hp am I leaving on the table by going with headers with 1 3/4'' primaries as apposed to those with 1 7/8'' primaries on a LS2 stroker motor (402+ ci)? The only companies that make headers with 1 7/8'' primaries want a good amount of $$$ for them, so I was thinking that I would just go with a set of pacesetters. Or maybe the edelbrock headers because they are atleast stepped to 1 7/8''. Is the added cost worth the hp? In my mind 10 hp would probably be enough to validate the extra cost.

have you looked into the 1 3/4 stepped to 1 7/8?? they are cheaper than the full 1 7/8