2002 Z28 automatic upgrades? - CamaroZ28.Com Message Board

LS1 Based Engine Tech LS1 / LS6 / LS2 / LS3 / LS7 Engine Tech

2002 Z28 automatic upgrades?

Old 11-14-2012, 04:33 AM
  #1  
Registered User
Thread Starter
 
Join Date: Nov 2012
Location: Colorado Springs
Posts: 13
2002 Z28 automatic upgrades?

I am new to the forum and recently purchased a 2002 Z28 automatic. Most of my friends chastise me and say i should have purchased a 6-speed manual. Ok i get that but i obviously didnt. Question is, is there anything worth upgrading under the hood. I searched around and either my search-foo is weak or i dont even know where to start. My friends say its not even worth trying but i feel like they are just being bias. Any suggestions?
Killer_Junior is offline  
Old 11-14-2012, 02:49 PM
  #2  
Registered User
 
Join Date: Nov 2003
Location: New Britain, CT.
Posts: 236
Re: 2002 Z28 automatic upgrades?

your friends are not as smart as they think they are. autos were faster in the 1/4 than M6.
BC2002SS is offline  
Old 11-15-2012, 02:46 AM
  #3  
Registered User
Thread Starter
 
Join Date: Nov 2012
Location: Colorado Springs
Posts: 13
Re: 2002 Z28 automatic upgrades?

alright! now we are getting somewhere! I use this car mainly for daily driving. Mostly to get to work and back and around town when my wife is gone with the kid. So what would be the best route to take? Like i stated in my intro im not real savy under the hood so youll have to bear with me. Just kinda looking for options.
Killer_Junior is offline  
Old 11-15-2012, 05:10 PM
  #4  
Registered User
 
parkers Z28's Avatar
 
Join Date: Apr 2012
Location: north Carolina
Posts: 563
Re: 2002 Z28 automatic upgrades?

A cold air intake is not very had to instal.. next you should go to the exhaust and do as much as you can afford. long tube headers , full exhaust , muffler better flowing cats. transmissions shift kit
the upgrades can add up fast this should get you started.
parkers Z28 is offline  
Old 11-17-2012, 07:59 PM
  #5  
Registered User
 
Join Date: Dec 2003
Location: ST PAUL,MN
Posts: 122
Re: 2002 Z28 automatic upgrades?

1st make sure you upgrade your air lid & cat back (if stk). next if you have any wheel hop do sfc (sub frame connectors), lca's (lower control arms) for traction. headers & gears if in your budget. if you want to upgrade your auto A4, shift kit, servo, boost valve, aluminum pan, stall converter, cooler. after that if your bud can still smoke you heads n cam or bigger motor! cheers! ps a pro tune is very important. for racing a beast shell for your auto.

Last edited by DANOZ28; 11-17-2012 at 08:06 PM.
DANOZ28 is offline  
Old 11-18-2012, 08:03 AM
  #6  
Registered User
Thread Starter
 
Join Date: Nov 2012
Location: Colorado Springs
Posts: 13
Re: 2002 Z28 automatic upgrades?

Thanks guys! You have all been really helpful. Im gonna start with a Cold air intake and work my way to the exhaust and shift kit. After that im gonna see what else i can afford. Once again thanks and ill post pics when i get start getting the ball rolling. I cant do much from Afghanistan
Killer_Junior is offline  
Old 11-18-2012, 10:35 AM
  #7  
Registered User
 
WhiteHawk's Avatar
 
Join Date: Feb 2004
Posts: 943
Re: 2002 Z28 automatic upgrades?

I nice torque coverter is about the biggest bang for the buck (after an aftermarket lid) you can get on an auto. I like the Yank SS3600 myself.

-Geoff
WhiteHawk is offline  
Old 11-18-2012, 07:59 PM
  #8  
Registered User
 
transamtom's Avatar
 
Join Date: Mar 2001
Location: niagara falls ont. canada
Posts: 908
Re: 2002 Z28 automatic upgrades?

Originally Posted by WhiteHawk View Post
I nice torque coverter is about the biggest bang for the buck (after an aftermarket lid) you can get on an auto. I like the Yank SS3600 myself.

-Geoff
Yup with the right tune you will still have great driveability

Plus you will eat stick cars for lunch at the track
transamtom is offline  
Old 11-19-2012, 02:29 AM
  #9  
Registered User
Thread Starter
 
Join Date: Nov 2012
Location: Colorado Springs
Posts: 13
Re: 2002 Z28 automatic upgrades?

So far on the buy list:

K & N Cold Air Intake
Superchip programmer
Flowmaster Cat back exhaust
Aftermarket rims (different thread)

Opinions?
Killer_Junior is offline  
Old 11-22-2012, 11:50 PM
  #10  
Registered User
 
transamtom's Avatar
 
Join Date: Mar 2001
Location: niagara falls ont. canada
Posts: 908
Re: 2002 Z28 automatic upgrades?

Originally Posted by Killer_Junior View Post
So far on the buy list:

K & N Cold Air Intake
Superchip programmer
Flowmaster Cat back exhaust
Aftermarket rims (different thread)

Opinions?
Get a lid its cheaper and flows better.

Forget the canned tune get a real tune a mail order tune would be 100x better.

Get a Magnaflow/Corsa/ Borla. forget the Chokemaster.

OE Wheels has a great selection at decent prices.
transamtom is offline  
Old 11-25-2012, 07:42 PM
  #11  
Registered User
 
Join Date: Dec 2003
Location: ST PAUL,MN
Posts: 122
Re: 2002 Z28 automatic upgrades?

i left out zpack clutches for racing A4's & if you rev over 5800 rpm you can run into valve float w stock valve springs! UPGRADE! (LS1 WEAKSPOT)
DANOZ28 is offline  
Old 07-03-2017, 11:57 AM
  #12  
Registered User
 
Jayson Banks's Avatar
 
Join Date: Jul 2017
Posts: 4
Re: 2002 Z28 automatic upgrades?

Hey guys I got a 2002 z28 auto I love it but idk what I should do to it it already has an aftermarket SLP exhaust I was thinkn shift kit and cold air intake but what else would be good for performance would I be able to Turbo it I kind of want a car I can drive on the street take to a show and run it down the track if necessary some one help
Jayson Banks is offline  
Old 07-03-2017, 12:45 PM
  #13  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 66,983
Re: 2002 Z28 automatic upgrades?

Which rear axle does your 2002 have? Could be either 2.73:1 (RPO = "GU2"); or 3.23:1 (GU5)? You can look at the service parts label (glove box or driver's door) to see which RPO code it has.

Makes a difference, because the 2.73 gears can hold you back.
Injuneer is offline  
Old 07-03-2017, 08:20 PM
  #14  
Registered User
 
Jayson Banks's Avatar
 
Join Date: Jul 2017
Posts: 4
Re: 2002 Z28 automatic upgrades?

Originally Posted by Injuneer View Post
Which rear axle does your 2002 have? Could be either 2.73:1 (RPO = "GU2"); or 3.23:1 (GU5)? You can look at the service parts label (glove box or driver's door) to see which RPO code it has.

Makes a difference, because the 2.73 gears can hold you back.
it has gu2 I seen that on the door
Jayson Banks is offline  
Old 07-03-2017, 09:09 PM
  #15  
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 66,983
Re: 2002 Z28 automatic upgrades?

Definitely need to replace the 2.73's with a higher numerical gearset. Options are 3.23, 3.42, and 3.73. Which ratio you go with will depend to some extent on what path you choose to higher HP, how much HP you are looking for, and your budget. Another consideration is a higher stall torque converter. Some mod's like a turbo, need to build RPM to produce torque. Ditto with an aggressive camshaft.

Key piece of info is your budget. I'm more knowledgeable regarding the LT1 engine. Hopefully if you can home in on a budget, the people who know the LS1 engine can give you more specific guidance.
Injuneer is offline  

Thread Tools
Search this Thread
Quick Reply: 2002 Z28 automatic upgrades?


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.