1.75" compared to 1.875" headers, RESULTS!!!
Feb 6, 2012 | 09:46 AM
#24
The bigger primaries made more power in the meat where it counts. I would also agree that with a tune the top end would have been a different story. I'd say they're worth it.
Feb 7, 2012 | 10:43 PM
#26
JANNETTY RACING HEADER TEST RESULTS - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
that should speak for itself. 1 7/8" all the way.
that should speak for itself. 1 7/8" all the way.
Feb 8, 2012 | 07:03 PM
#29
Can you please post the log files for each dyno run ?
It appears clear to me you had knock retard / burst early on the dyno run showing less power and then it cleared up and put the timing back in where the graph spiked up.
Power doesnt not ramp that sharply back up in the 1000+ dynos ive done on a LSx vehicle from just a header change etc....
You may find if you lock out timing on both runs you would have found a near identical curve between the two. We've never seen 1-7/8" lose anything down low on a LS1 5.7 or larger, usually the same across board or sneaks in a little more power on the top end on higher horsepower cars.
It appears clear to me you had knock retard / burst early on the dyno run showing less power and then it cleared up and put the timing back in where the graph spiked up.
Power doesnt not ramp that sharply back up in the 1000+ dynos ive done on a LSx vehicle from just a header change etc....
You may find if you lock out timing on both runs you would have found a near identical curve between the two. We've never seen 1-7/8" lose anything down low on a LS1 5.7 or larger, usually the same across board or sneaks in a little more power on the top end on higher horsepower cars.
