Smog friendly mods for LT4
Thread Starter
Burning Brakes
Joined: Apr 2011
Posts: 1,149
Likes: 107
Smog friendly mods for LT1
I have been tossing around the idea of getting rid of my 06 Z06 an going to a C7 Grand Sport. What would be some good legal mods to give me a power bump?
Last edited by jimbob8915; May 26, 2017 at 01:23 PM.
Supporting Vendor
Joined: Feb 2009
Posts: 4,420
Likes: 1,428
From: Mesa Az
I believe A&A got their blower kit carb approved.
__________________
Cordes Performance Racing aka "CPR"
Owner of AZ's premier LSX/LTX motorsports shop
http://cordesperformanceracing.com/
www.facebook.com/cordesperformanceracing.com
joe@cordesperformanceracing.com
480-359-5914
Cordes Performance Racing aka "CPR"
Owner of AZ's premier LSX/LTX motorsports shop
http://cordesperformanceracing.com/
www.facebook.com/cordesperformanceracing.com
joe@cordesperformanceracing.com
480-359-5914
Le Mans Master
Joined: Oct 2000
Posts: 6,490
Likes: 716
From: Sausalito CA
The Calif smog question.
You won't have to worry about smog for 7 years I believe.
Then you have the new STAR smog stations which I also believe don't use a sniffer or rolling road, just a OBD plug in.
Bump in HP....yes a super charger may be what you are after.
Other options, to pass a visual smog, would be a camshaft, cylinder head blue printing, hi flow cats maybe not much else.
Reversing mods at smog inspection time some say is a PITA.
None the less.....good hunting.
You won't have to worry about smog for 7 years I believe.
Then you have the new STAR smog stations which I also believe don't use a sniffer or rolling road, just a OBD plug in.
Bump in HP....yes a super charger may be what you are after.
Other options, to pass a visual smog, would be a camshaft, cylinder head blue printing, hi flow cats maybe not much else.
Reversing mods at smog inspection time some say is a PITA.
None the less.....good hunting.
Race Director
Joined: Jan 2014
Posts: 10,709
Likes: 7,101
From: Fulshear, TX
I got real nice gains out of ported OEM exhaust manifolds (basically the same as ARH mid-length catted headers) and they appear stock from the outside. You might be able to get a Borla X-pipe past as well since the secondary cats are unmonitored and once the tunnel plate is back in place it doesn't stand out at all. There is always a drop-in air filter as well.
Last edited by Kracka; May 26, 2017 at 03:12 PM.
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
Why get a GS and mod it? Why not get a Z06 and drive slower than normal? You'd be just as fast (yes I know they cost more, but so do mods).
If this is about overheating... There's nothing "wrong" with a Z06 that isn't also "wrong" with any 650hp Corvette right now - lack of frontal cooling inlet area. If you make 650hp with a GS and drive it on a road course you'll have the same problem.
So far as I'm concerned getting a GS and then modifying for power makes little sense when GM has already done and (mostly) validated a complete solution.
PS: I came from an '07 Z to the '15 Z, you'll love it.
If this is about overheating... There's nothing "wrong" with a Z06 that isn't also "wrong" with any 650hp Corvette right now - lack of frontal cooling inlet area. If you make 650hp with a GS and drive it on a road course you'll have the same problem.
So far as I'm concerned getting a GS and then modifying for power makes little sense when GM has already done and (mostly) validated a complete solution.
PS: I came from an '07 Z to the '15 Z, you'll love it.
Last edited by davepl; May 26, 2017 at 07:04 PM.
