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2002 C5 Auto = 2002 Z06?

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Old Apr 20, 2016 | 01:29 PM
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Default 2002 C5 Auto = 2002 Z06?

My "conservative" goal is to simply have our 2002 C5 Auto perform similarly to a 2002 Z06 in regards to 0-60 and 1/4 times and have everyday driver reliability. No real interest in taking it to Sebring or anything like that...nor am I interested in crazy "top end" speeds (as if 170 weren't enough).

I assume this is possible and here is what I have in process so far.

Kooks LT Headers and Kooks X-Pipe
Airaid Intake
Z06 Ti Exhaust with the bypass mod
New plugs, wires, etc...
Dyno Tune by Joe at PowerTech Performance in St. Petersburg, Fl.
PowerTech is doing all of this work btw.

I have managed to track down a Z06 SP Rearend with the 3.42 gears. I haven't pulled the trigger yet...but wanted to get some experienced feedback if the Z06 rearend would be a logical next step in what I'm hoping to accomplish.

Many thanks.
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Old Apr 20, 2016 | 01:45 PM
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The Cam and heads are also different
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Old Apr 20, 2016 | 01:46 PM
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Looks like you've got everything covered pretty well. I would suggest maybe a higher stall converter, too.
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Old Apr 20, 2016 | 01:46 PM
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Originally Posted by Smoken1
The Cam and heads are also different

Yeah, but with the other mods, I think he'll accomplish his goal.
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Old Apr 20, 2016 | 01:54 PM
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Originally Posted by Samjax777
My "conservative" goal is to simply have our 2002 C5 Auto perform similarly to a 2002 Z06 in regards to 0-60 and 1/4 times and have everyday driver reliability. No real interest in taking it to Sebring or anything like that...nor am I interested in crazy "top end" speeds (as if 170 weren't enough).

I assume this is possible and here is what I have in process so far.

Kooks LT Headers and Kooks X-Pipe
Airaid Intake
Z06 Ti Exhaust with the bypass mod
New plugs, wires, etc...
Dyno Tune by Joe at PowerTech Performance in St. Petersburg, Fl.
PowerTech is doing all of this work btw.

I have managed to track down a Z06 SP Rearend with the 3.42 gears. I haven't pulled the trigger yet...but wanted to get some experienced feedback if the Z06 rearend would be a logical next step in what I'm hoping to accomplish.

Many thanks.
If you have the 3.15 option then the 3.42 won't do much. If you have the standard 2.73 (I think that is right) then go for the 3.42. It will make a big difference in seat of the pants performance. A dyno tune should also include some transmission adjustments and you will definitely need it if you change the rear gears. That should get you close but a Z06 has a different cam.
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Old Apr 20, 2016 | 02:16 PM
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Originally Posted by zeevette
Looks like you've got everything covered pretty well. I would suggest maybe a higher stall converter, too.
I was just saying what else is different. Now if we are gonna help spend his $$. Then I would do the converter and the Torque tube rebuild
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Old Apr 20, 2016 | 02:35 PM
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Originally Posted by Samjax777
My "conservative" goal is to simply have our 2002 C5 Auto perform similarly to a 2002 Z06 in regards to 0-60 and 1/4 times and have everyday driver reliability. No real interest in taking it to Sebring or anything like that...nor am I interested in crazy "top end" speeds (as if 170 weren't enough).

I assume this is possible and here is what I have in process so far.

Kooks LT Headers and Kooks X-Pipe
Airaid Intake
Z06 Ti Exhaust with the bypass mod
New plugs, wires, etc...
Dyno Tune by Joe at PowerTech Performance in St. Petersburg, Fl.
PowerTech is doing all of this work btw.

I have managed to track down a Z06 SP Rearend with the 3.42 gears. I haven't pulled the trigger yet...but wanted to get some experienced feedback if the Z06 rearend would be a logical next step in what I'm hoping to accomplish.

Many thanks.
The Z has 60 more flywheel HP depending on the year. IMO that's expecting a lot from only headers, air intake and a tune on an LS1.
Assuming you do get 60HP and equal TQ/HP across the board as an LS6 (which I doubt) at the flywheel, you also have the manual vs. auto (you lose about 5% to the wheels compared to a stick, so about 20HP!), rear end gears as noted, but you have about 200# to make up for as well.
I'd say if you want to keep with a stock Z, get some 243 heads, a better cam, higher stall converter and the mods/gears you already stated.
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Old Apr 20, 2016 | 03:03 PM
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Originally Posted by zeevette
Yeah, but with the other mods, I think he'll accomplish his goal.
definitely not. With an auto vette, with his mods he'll be around 330-340rwhp if hes lucky, and still wont have the same gearing. Even a cam only car with ls1 intake and 241 heads with his other mods wouldn't be as quick in street applications. Unless he does some serious weight reduction, hes going to need some more work to get him up to z level.
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Old Apr 20, 2016 | 03:13 PM
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His 02 should have the ls6 intake already not the ls1
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Old Apr 20, 2016 | 06:08 PM
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Originally Posted by dbgoodwin
definitely not. With an auto vette, with his mods he'll be around 330-340rwhp if hes lucky, and still wont have the same gearing. Even a cam only car with ls1 intake and 241 heads with his other mods wouldn't be as quick in street applications. Unless he does some serious weight reduction, hes going to need some more work to get him up to z level.
Check out this other thread...


I just decided to get a Dyno Tune after hearing about the extra power I could pick up. She made 365 HP and 371 Torque at the wheels. All mods including the XS Power Headers and catted X-Pipe are Halltech Stinger Cold Air Intake, Corsa Xtreme Cat-back, and of course the tune. I felt immediate power with just the installation of the cold air intake, and the headers, but the tune really woke things up. When, or if I decide on another Corvette, I'll be ordering another set of these headers. Last but not least, if you're in VA, or close by and want a great tune, contact Matt Shue.
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Old Apr 20, 2016 | 10:40 PM
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Originally Posted by zeevette
Check out this other thread...


I just decided to get a Dyno Tune after hearing about the extra power I could pick up. She made 365 HP and 371 Torque at the wheels. All mods including the XS Power Headers and catted X-Pipe are Halltech Stinger Cold Air Intake, Corsa Xtreme Cat-back, and of course the tune. I felt immediate power with just the installation of the cold air intake, and the headers, but the tune really woke things up. When, or if I decide on another Corvette, I'll be ordering another set of these headers. Last but not least, if you're in VA, or close by and want a great tune, contact Matt Shue.
Where's the actual post?
What did it have HP/TQ prior to the changes on the same dyno?
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Old Apr 21, 2016 | 12:52 PM
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Originally Posted by grantv
Where's the actual post?
What did it have HP/TQ prior to the changes on the same dyno?
https://www.corvetteforum.com/forums...rs-review.html


I know you're searching for reasons it can't be done, but I'm sure a well set up coupe, with light mods as suggested, can equal or even better a stock Z 0-60, and 1/4 mi., which is what the OP wants.

Last edited by zeevette; Apr 21, 2016 at 12:55 PM.
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Old Apr 21, 2016 | 01:31 PM
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Old Apr 21, 2016 | 01:35 PM
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Originally Posted by zeevette
https://www.corvetteforum.com/forums...rs-review.html


I know you're searching for reasons it can't be done, but I'm sure a well set up coupe, with light mods as suggested, can equal or even better a stock Z 0-60, and 1/4 mi., which is what the OP wants.
LOL, you got me all wrong. I'm not searching for anything, just trying to provide honest replies to the OP.
What I know; throwing a set of headers, air intake and Z06 mufflers/gears on a base model with auto won't make up for everything else a Z06 includes; lighter weight, less-loss tranny, better heads, better cam, bigger tires (better traction)....
One reply (from a poster by the way who's posted 3 times total, all in the same thread only, since joining about a year ago no less) stating he got 365HP does not mean one should believe/expect this to happen. No pre-install dyno indication, no print out of the post bolt-on mods, 3 time poster in same thread... sorry, not believing.
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Old Apr 21, 2016 | 04:13 PM
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I'm also skeptical about getting that much from those bolt-ons.
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Old Apr 21, 2016 | 06:03 PM
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Originally Posted by grantv
LOL, you got me all wrong. I'm not searching for anything, just trying to provide honest replies to the OP.
What I know; throwing a set of headers, air intake and Z06 mufflers/gears on a base model with auto won't make up for everything else a Z06 includes; lighter weight, less-loss tranny, better heads, better cam, bigger tires (better traction)....
One reply (from a poster by the way who's posted 3 times total, all in the same thread only, since joining about a year ago no less) stating he got 365HP does not mean one should believe/expect this to happen. No pre-install dyno indication, no print out of the post bolt-on mods, 3 time poster in same thread... sorry, not believing.
The OP's desire was not HP based, it was 0-60 and 1/4 times comparable to a Z. I meant that with his planned mods, and a stall would achieve his goal. I wish him luck, but it wouldn't be that big of improvement, IMO. Having a A/T, and a stall would make the car easier to launch than a stock Z, so I would put money on the outcome; all things being as they're described.
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Old Apr 22, 2016 | 04:27 AM
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A cam and converter and you will be raping Z06s. I probably wouldnt even change the 3.15s...

A mild cam will gain you 40hp, the converter will knock .5 off your ET minimum. You can run 11.70-11.80s no problem with the right parts..(cam/headers/LS6 intake/converter/good tune)
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