Guys;

Part for part, what is the difference between and 02 LS6 and LS1. I just bought an 02 coupe. Dealer says he will install all parts necessary to make my LS1 an LS6. If I purchased a complete set of LS6 heads, valves, springs, rockers, push rods, cam, airbox, maf etc. will I have an LS6? Was going to do an upper end package on the LS1 but am thinking of doing a Z06. Dealer quoted me an installed price that is half of what tuners are asking for an LS1 package. I know that the hp numbers for the Z06 will be lower but dealer said he would cover all parts under my 5/60k warranty.

I wanted a removable roof, that's why I went with the coupe :smash:

 

Huh ?? You are probably better off to go back to the dealer and get a Z06 before you get any mileage on the 02 coupe.

Better read both articles about the LS6 by Hib Halverson on the C5 Registry and familiarize yourself with all of the differences of an LS6 - even the block is different - then once you do have the extra power what about the remainder of the driveline components and suspension that have to take the additional power.


[Modified by Zapper, 3:18 PM 10/21/2001]

 

Zapper;

What I'm getting at is that I want a top end package for the coupe. However, is the Z06 motor primarily a top end package? I know there are differences in the clutch & suspension on the overall car that also make it different. I just feel more comfortable buying a top end kit from GM with known parts and getting a dealer warranty as opposed to going to a tuner.

 

The LS6 is far more than a top end package. As I mentioned please go to the C5 Registry and read Hib Halversons analysis of what is different on the LS1 vs the LS6.
http://www.c5registry.com/2k2z06/index.htm

2001 specs are below
http://www.corvettemuseum.com/specs/2001/index.htm

 

What did the dealer quote you for it? I've been toying with a similar idea.

 

My dealer quoted me $2700 installed. I just want to make sure that all the parts he's quoting are the parts necessary. That is why I made this post.

They will also do suspension parts if I'm interested, haven't gotton a quote on that yet.

 

The only differences of any importance are the heads, cam, injectors, throttle body (maybe) and MAF (maybe). The bottom end is the same on all 2001 and newer vettes.

If you change the injectors/MAF, you will have to have the PCM programmed, and I'm not sure your dealer can do that. They would probably have to use the VIN from a Z06.

Dave

 

There is a difference in the casting of the "blow by feature" of the block, that is explained on the Z06 video, tis minor, but nonetheless it is there. :cheers:

 

Grady,
Personally, I'd buy an LS6 crate engine, and have your dealer do the swap that way. Your like-new LS1 would have a substantial salvage value. You would pay around $7500 for the complete LS6 crate engine, and if you sold your LS1 for $4500, you'd be out about the same $2800 or so that you're looking at now. I'm sure your like-new all-aluminum LS1 would sell easily, especially if your dealer backs it with the GM crate engine warranty. Some guy with a C4 looking to upgrade would jump on it.

An earlier poster was right, the LS6 block is special with regard to the bay-to-bay windows cast into it to relieve internal pressure buildup (and resulting power loss and oil frothing) at high rpm. There is no sense in getting a 6500-rpm LS6 valvetrain/cylinder heads and putting them on a LS1 short block designed to turn 6000 rpm. If you have the dealer replace your block, you get into the scary area of trying to fit pistons from your LS1 motor into a new LS6 block. Considering the new tighter piston for for the '02 coated pistons, I'd avoid this if possible.

For long-term resale value, you'd inspire more confidence in a future buyer of your car if you had a receipt for a LS-6 crate engine in your "Super Coupe", rather than having the dealer do a Frankenstein job on your current LS-1. Just my $.02.

Don't forget to the cost of upgrading your clutch to LS6 standards (I'm assuming you have the MN6, kind of risky trusting the A4 to handle an extra 55 hp) and the exhaust system changes as well.

Good luck with your project :cool: I'm surprised more coupe onwers aren't doing this.

Scott :reddevil


[Modified by Keystone, 11:52 AM 10/25/2001]


[Modified by Keystone, 11:53 AM 10/25/2001]


[Modified by Keystone, 11:55 AM 10/25/2001]

 

Sorry Guys to be the bearer of bad news. The reason the dealer wants to do the parts upgrade on the LS1 motor is because GM and Fed Emissions will not allow a dealer to install a LS6 motor into an LS1 car. In July my car was caught in a flash flood. Long story short, it was either risk water injestion or have the entire car flooded. Got it out of the flood but did injest water and broke a rod and knocked a hole in the block. Thank God , for comprehensive insurance!! I talked to dealer about ordering LS6 motor instead of LS1 and they said Great until they talked to the supplier. NO DEAL!! Fed Emissions restricts them from installing LS6 into LS1 car. I thought Bull S--- and called the Fed Emissons 800 # they gave me. Dealer was correct, = $100000. Fine do dealer and $10000 fine to the tech if caught. Now you know why I dialed 1-800-LPE and had the complete engine from the block up worked and built by LPE. Turns out Feds did me a favor, lol!!! See signature for dyno #'s on a brand new motor. Vastly superior to a stock 02 Z06 motor. Has LPE's 2yr 24 mos warranty to boot. Hope this helps, Whiteboy :chevy :chevy

 

Hotdamn, whiteboy, I never thought about the emissions issue. Just another example of "The Man" puttin' us down.... :boxing :lol:

Seriously, can LPE get away with modding an engine as long as they use the original block, or do the Federal laws apply only to GM dealers? Does your car have to be emissions-certified in some way after it's been "tweaked" at LPE? Also, if the mill pukes out in Podunk, Montana, will some local Chvy dealer be able to work on it? I've been curious about the long-term livability of a car w/ a tuner-modified engine.

Perhaps grady could get the standard LS6 crate engine from his dealer and have it installed at a tuner's shop. If I was his dealer, I'd still be more comfortable giving him the warranty on a cratre engine than on a LS1/LS6 hybrid.

 

Hey Keystone, In answer to your first question. I think you will find most of the tuners have a similar warranty. The only negative to that is if you live a distance from the tuner . The tuners require that you bring the car to them to honor the warranty. In answer to the Fed Emissions, my car was tested at LPE for emissions when I picked it up. Can't quote the exact #'s but it was near perfect. Since it is still running an LS1 motor (wink, wink,) and will pass emissions with flying colors. ( just did.) here in Indiana, the Feds have no concerns. Hope this helps . 1200 miles on the motor and loving life, lol.
Thanks Whiteboy :chevy :chevy

 

The Z06 passes emissions, just as the coupe does. So why would a swap be an emissions issue? After all, can't you just swap out the catalysts as well?


[Modified by Scissors, 11:35 AM 11/9/2001]

 

Hey Scissors, I didn't make those stupid restrictions! The Fed Emissions did!!For verification , if you have any doubts, check with the parts manager at your dealer and see if he can even order an LS6 engine without an Z06 Vin. As I posted earlier, the dealer faces a $100000. fine and the technician a $10000 fine from the Feds. I am very pleased with the Feds, for they caused me to use LPE. And without some modifications other than bolt ons the Z06's don't have anything for me. Plus I can still enjoy the convertible, weather permitting or you can enjoy yours with the top out if you have a coupe. Good Luck with your decision which ever you decide. Whiteboy :chevy


[Modified by whiteboy, 4:26 PM 11/9/2001]

 

some one posted that all 2002 C-5s have the same block,std LS-1 or the ZO-6. makes sense as why should chevy stock 2 different blocks.

 

I believe that also has some impact on the 6600 rpm rev cabability. Not sure if the PCV system is different on the LS6.. You don't want to be sucking oil through it due to the higher revs.

Don't forget about the new PCM.