Just curious: Headers, X-pipe necessary?
07-14-2019, 07:49 AM
#21
Burning Brakes
the only way this would be believable is if you would have tuned it first, but you didn't. if you had just tuned it first you would have found yourself at the 400 make any way. if you look at the stock manifolds they look like cast shorty headers, and they work pretty well too, I love that everyone thinks they know something that GM doesn't
07-14-2019, 09:50 AM
#22
Race Director
Member Since: Mar 2011
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2021 C6 of the Year Finalist - Modified
There is no way in hell that you can take a bone stock LS3 and get an extra 30 RWHP from just a dyno tune.
Not going to happen
Not going to happen
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NYC6 (07-14-2019)
07-14-2019, 12:09 PM
#23
Safety Car
C6 Z06 and ZR1 mid pipes are 3", and '06-'10 C6 Z06 came with H pipe, 2011+ came with X-pipe...but the '12/'13 models have the extra 2 cats attached before the X. '09-'13 C6 ZR1 came with X pipe, but again the '12/13' models have the 2 extra cats. No idea on Base/GS for H versus X, but pipe diameter is 2.5" for all years.
The base 2008+ C6 corvettes came with "X" pipes. I believe the base pre 2008 came with "H" pipes.Having had both, the biggest difference between the two are more for sound than power. Normally, H pipe will have a deeper sound than the X pipe. The X pipe does a better job scavenging exhaust at higher rpm and the H pipe at lower rpm. Comparing the two, expect 1-3 average HP from the X pipe and the same for the H pipe in average torque.
Last edited by Mike's LS3; 07-14-2019 at 12:09 PM.
07-15-2019, 10:36 AM
#24
Burning Brakes
it happens all the time, my LS2 stock 347 after the first tune 379 talk to a tuner now your gonna tell me my LS2 heads cam intake can't be putting 500 to the rear tire, it is
