silverM6TA

as you can tell im new to this site but not to the gm community. I am relativly new to corvettes in general. what im wondering (and dont make fun of me for this) is if a simple bolt-on c5Z can hang with a stock c6Z at all? im just looking in to buying a c5Z. i have driven a c6 and have to say i am impressed. but thats way out of my price range. so im just curious how a bolt on c5 stacks up against a bone stock c6. if it cant hang, what is the minimal needed for the c5 to come out on top. thanks in advance guys.

DANZGLASS

not even close you need a pretty extreme head cam combo just to hang with a c6 z06. If you want to hang with a c6 z06 best would be bigger cubes or FI. I was going to do head cam but sold everything to go with an A&A kit later this year.

AU N EGL

Bolt in an LS7 with dry sump and you be there

Otherwize not any FI or turbo will keep up after a few minutes. The C6Z will walk away.

SCBQQSTN

Yeah your best bet is to match fire with fire, drop the LS6 and put an LS7 in the C5 Z06 and its game on lol.

otherwise a bolt on C5Z will keep up, probably go a little faster than a stock C6. C6Z though no way

GARY2004Z06

Depends on what you mean by keeping up. If you are refering to a drag race, then I will say unequivocally YES. If you are thinking about aything beyond a quarter mile, then the answer is NO. I own both of them.

63Corvette

Gary, please clarify. I own a C5 Z06 with Stoptechs (only), so, what do I need Other than Hoosier A6 tires, to run with a C6 Z06?

Z06_BluByU

101hp

hector88

i have an 01 z06 with full exhaust and a vararam and i hit 11.8 @116. so if u get an 02-04 im pretty sure u can beat the c6z in the 1/4. the c6 u can beat it with no problem even if its an ls3. i raced a c6 z with i sucky driver from a 40 roll i had drags and he was all bone stock. i jumped about a full car right away and started pulling when i shifted to 4th he came creepin up but then he shifted and he stayed there and i was infront by 3/4 of a car. we raced up to 12x

jclarksnakes

If you mean can a bolt on C5 ZO6 run with a stock C6 ZO6 in the 1/4 mile then the answer is yes. Cold air intake, headers and tune with drag radials have done it for quite a few people on this forum.
http://forums.corvetteforum.com/c5-z...fast-list.html

JerryX

The C5 Z06 is faster than the regular C6. If you were impressed with just the regular C6 you'll definitely like the C5 Z06. You'll need heads and cam to keep up with the C6 Z06.

AU N EGL

Part of this challenge at least for me is. Real times on a road course. not someone on a stop watch.

I mean say a NASA race or TT where the AMB transponders are used and MyLaps.com time results.

Not enough C6Z06s race NASA ST1 or TTR or even in SCCA SU classes. Lots of C5Zs in NASA ST2 or TTS and SCCA T1. IMO the cost of car race preparation is quite different between the C5Z and C6Z.

There were some times a few weeks ago on Road Atlanta, but it was raining. Racing in the rain is driver skill.

I have seen some great times from Road America last year. But not on the same day. Granted the C6Z06 was a NASA TTR and the C5Z was SCCA T1. The C5ZT1 times were quicker. Was that a fair comparison? maybe not. Different circumstances.

IMO when we see same weekend same event, different classes are OK, with AMB transponders & Mylaps.com for independent timing then well will have better ideas.

On longer straight a-away course then the C6Z Should be better. On a short straight tight corner course the C5Z even with 100 less hp should corner better. and have lower lap times.

AU N EGL

Gary can you give us an idea of your lap times on Road America in the two different Zs?


When I chase C6Zs on VIR they are much faster on the straights, but I eat them alive into brake zones and through corners. End result I may lapping quicker.

RC45

I have been getting some interesting results now that I been able to closely model the C5 Z06 physics within rFactor physics parameters.

With equal drivers stock C5 Z06 vs stock C6 Z06 is a no brainer, you are just so much faster everywhere with the C6 Z, and the extra torque is so useful, as is the slightly taller gearing - less shifts every lap and I put buslengths on myself when using the stock C6 Z vs the stock C5 Z.

In fact I am as fast in a stock LS3 Z51 as I am in the stock C5 Z06.

Even switching out the tyres for slicks doesnt do much except allow more aggressive braking and harder turning, which leads to much better laptimes for the C5 Z and the LS3 Z51 is dominated by a slick shod C5 Z06, but the C6 Z still pulls hard on those long straights and pretty much leaves the C5 Z on longer tracks.

You dont need the same power as the C6 Z in the C5 Z if you add sticky tyres and tweak the setup, but you do need more than stock power levels 420rwhp is enough.

Key is that the C6 Z must remain stock.

The moment sticky tyres, or even just engine upgrades and suspension changes are made to the C6 Z the changes you need to the C5 Z suddenly become immense.

Of course this is in the context of a physics simulator,with the same driver in both cars, but the results do appear to follow reality.

Seems GM sort of knew what they were doing when they cobbled the C6 Z06 together heheh

SteveDoten

C5Z=$20k

C6Z=$40-45

427 beats 346 in my book, looks? new Z easy

like most things in life, all comes down to MONEY

David426

Ragnar ran a 11.8 with a bone stock C5Z. I.ve seen low 12's from C6z s at the track.. The driver and skills have a lot do do with it.. The c6z has 100 more hp.. Its a no brainer. You need another 100 hp with a C5. The answer to your question is yes. Heads,cam,intake,CAI,header and a dang good tune.. That will get you 440-450rwhp.. Done deal

stock z06

c6z06 are torque monsters i found out the hard way
but i still love my c5z and the guy in the c6z06 was an awesome driver.

GARY2004Z06

I can only give input from a drag racing perspective since I was only on a road course (Limerock) once. The road course is actually much more fun so I need to take my C6Z out sometime to see how I can do. Back to drag racing.
My bolt-on C5Z:
C5 Z06 External Bolt On Times (stock long-block)

1--10.890@125.06--1.465--GARY2004Z06--'04 12/08-VR CAI, DRs, ARH LTs, Clutch, Gears, Post #356

My C6Z with DRs:
10.912 @ 127.23 with a 1.66 60'.

As you can see, my C5 annihilated my C6 off of the line due to the clutch and the 4.10 gears. I believe we could have eeked out another 2 tenths in the C5Z. (10.6x)
Bolt-ons are the next project on the C6Z.
Both cars are wonderful but the C6Z is more refined and the 427 has unbelievable potential.

leo12

are you kidding me? the c5zo6 has the right gear ratio both tranny and rear..all you need ia a simple supercharger set up making 530 550 at the rear wheels and you will be going right pass the c6zo6

RC45

On the freeway or the road course? You had better have the coolers, tyres and brakes to match the 550rwhp modded C6 Z. With 550rwhp I would hope you are beating up on a stock C6 Z... .

I believe the C5 Z06 has the incorrect ratios to succesfully take the C6Z 06 on at the orad course. By the time you get the power you have with a modded C6 Z06, the C5 Z06 is stuck with too many gear shifts that it doesnt need - considering any serious mods will give you all the torque you need in the C5 Z.

I have 570rwhp in an NA LS7 in my C5 Z, and I am no quicker than a cam/tuned C6 Z06 with 540rwhp. Those short gears kill our cars.

AU N EGL

and 30 secs latter ( non drag racing ) super charges overheat. Road races or even track days on a road course are 20 to 40 min long sessions. with 3 to 4 sessions per day, two days in a row.

SC or FI just dont hold up under those conditions. Sorry