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Old 01-03-2020, 09:58 PM   #15

lionssfan's Avatar
Drives: 2010 2ss camaro
Join Date: Nov 2010
Location: mi
Posts: 1,158
called kook headers direct before ordering on black Friday. they said go 2" over 1000 HP. I went 1 7/8
2012 zl1 stock 7000 miles
TVS2300, BTR cam PD stage 3, ID1050 injectors, CHE bronze trunnions, 7.400" pushrods,.660" lift platinum springs, Titanium ret, Zl1 fuel pump, Kooks LT headers, High flow cats, Roto Fab CAI, Corsa exh., Mellings oil pump, HD chain, ls2 damper, all synthetic, BMR control arms, zl1 toe link, BMR cradle mounts, W/bottle relocation, air scoop deflector, Hennessy wheels, two piece rotor, morimoto fogs, DRL harness, coilovers, Heads up install, mgw shifter, slps splitter, slp spoiler, zl1 side skirts, painted strips, debadged, tinted, 2018 emblems.

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Old 01-04-2020, 09:43 AM   #16
Vegas Bound

Drives: 2013 Sparkly Red One
Join Date: Dec 2018
Location: Landed in Vegas
Posts: 1,113
I have 1 7/8 headers and 2.5 NPP exhaust. No problem making 750 whp with my mods.
Lots of bolt on stuff
Bests in each category
1.36 - 60'
6.29 - 1/8 mile
10.18 - 1/4 mile
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Old 01-06-2020, 11:28 AM   #17
Drives: 2014 ZL1
Join Date: Apr 2018
Location: KCMO
Posts: 95
Originally Posted by MADDOGG79 View Post
After installation of your headers, is there a way to keep the belly pan on?
Yes, you just cut it where the headers come out. I've done this on 3 5th gens
2014 Summit White ZL1 2.45 upper, Longtubes, no cats, DSX Aux, Flex, E-85, Track Attach HX, Ted Jannetty Tuned.
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Old 01-06-2020, 11:40 AM   #18
LSx FTW!!!
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Drives: 2010 Camaro 2SS RS
Join Date: Jan 2017
Location: TN
Posts: 710
I was going to stay n/a so I got TFS GenX 255cc heads and went Kooks stepped 1-3/4 to 1-7/8 with 3in collectors to full Kooks 3in exhaust.

Just adding a ProCharger D1X to the setup, I made 723 rwhp pump 760 rwhp E85.

I was only shooting for 625 to 650 rwhp, but first pull the tuner made was over 700 rwhp!

That was on a Main Line dyno that I hear usually reads lower.

Plenty of power for me in a street car that rarely makes it to the strip!
2010 CGM Camaro 2SS RS A6 760rwhp on E85
Stage 2 ProCharger D1X
Circle D 3400 Converter
Kooks Jet Hot Ceramic Coated Headers
Kooks full true 3in exhaust
Trick Flow GenX 255's with Polished PAC .660's and Ti-retainers
Texas Speed VVT 3.2 cam kit w/DoD Delete
Texas Speed 1.72:1 Roller Rocker Arm Set
AEM X-Series OBDII Widebands
Fuel Injector Clinic ID1300x Injectors
GM ZL1 High Output Fuel Pump
DSX Tuning Flex Fuel Kit + E85
DSX Auxiliary Fuel System
JRE 6L80E Dipstick
NGK Iridium IX spark plugs #7 heat range
Mighty Mouse Camaro 5 Wild w/-12an and Billet Black
HP Tuners VCM Suite
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