No Header is worth 30 rwhp
.I have been reading your forum site for months and have restrained myself from becoming a member, but after seeing these HP #S you guys post I must be doing something wrong. I have been building engines for almost 30 years and do Tune about 1200 LS/1 and LS 6 engines a year. I bolt on about 200 set of headers a year and have dyno about 4 or 5 major MFG. I have NEVER found more then 16 whap from any header long or short. But these are true dyno #S. We will test headers on 5.3 6.0 5.7 (ZO 6) found 22 RWHP the best. When we test we use two or three cars and two or three dynos.. we switch the cars around and run them on all three dynos and avgas out the hp. Outside temp , weather , humidity. ect. all make a difference.
Last edited by GTO-TECH; 02-02-2005 at 10:13 PM.