You are browsing camaro6 
03-29-2017, 10:53 PM
|
#1 |
 
Drives: 2016 Camaro 1SS Red Hot Join Date: May 2016
Location: Memphis
Posts: 282
|
1 3/4 vs 1 7/8 headers
Which Header Size Is Better and Why?
|
|
|
|
03-30-2017, 03:54 AM
|
#2 |
|
SABIO
Drives: 2016 CAMARO 1SS Join Date: Jul 2015
Location: Bradford, ON
Posts: 5,012
|
The one that matches the exhaust flow needs of your engine.
With our engine size the default starting point would be 1 7/8". Going smaller could choke flow of your engine and cause power loss throughout you RPM band. Going to big, 2", can cause other issues. 1 7/8 will serve 80% off owners that remain stock or do bolt ons. Once F/I and internals are done, 2" would be the proper choice.
__________________
|
|
|
|
|
03-30-2017, 07:00 AM
|
#3 |
           
Drives: a M6 LT1 ordered From Becky!!! Join Date: Jan 2010
Location: NJ
Posts: 7,520
 |
1 7/8ths give you more power total than 1 3/4 in back to back testing. 2 inch gave a little more up top but lost lower on the curve. Ted Jannety (JRE) did all this testing some time ago. Look for those threads. Very helpful.
So for a bolton car 1 7/8 are the best choice and will give you around 15 RWHP as Bradford said. 2" may be better if you are going H/C or SC.
__________________
"Democracy Dies in Darkness" |
|
|
|
|
|
|
|
|
Post Reply
|
|
|
..... 