Snorman

How do you know somebody doesn't have a ZR1 with adequate break in miles on it?
How many miles are on the car that apparently ran a 10.2?
Why do you think the engine will "blow" if it doesn't have enough miles on it?

The break in is primarily for the clutch (M7 cars) and differential. Once the engine is running for a short period, there's nothing to "break in". Change the oil and it's good to go. This isn't the 1960's.
S.

Walter Raulerson

One reason is that SOME post "just got my ZR1" then on You Tube they are drag racing. One guy raced his at 495 miles and said so .Also if the engine doesn't need to be 'BROKEN IN" why does GM say to do it? Is this to protect GM? If it wasn't necessary why wouldn't they say "hey once you get your car just go drive the crap out of it don't worry about how fast you go" Doesn't it tell the new owner how to break the brakes in also?

Z06 1of38

Is it hard policing the world?

keagan

Fran??

Rkreigh

without drag radials 755 hp will be a smoke screen even at the digs.

the z06 with 650 was traction limited, another 105 isn't going to make it better.

10.6 on street tires is impressive, and 10.2 on drag radials is pretty good.

I agree with above, tranny and diff take more breakin than the engine. the new engines are happy pretty quickly and do most of the break in within the first hour of running.

time to go to MIR and see for myself!

Walter Raulerson

I would comment on a certain situation but politics are supposed to be off limits

70Apollostaged

For the life of me I cant understand why some people are so......loony. In this ridiculous argument over "stock" or "not stock" because of a set of tires I've noticed the racers of the group can make a clear distinction that tires are traction aids only. No HP was added nor a tune. The car is still stock, but on sticky tires. Racers know that "not stock" means the MECHANICALS or TUNING of the car was altered.. Only people that dont race would even make the asinine claim the car isnt stock due to tires.

racerns

I don't know, maybe some people are interested in what car runs as it was equipped from the factory. Tires can reduce the et by 1/4 sec or more. There is a reason we have separate categories on our fast lists.

3 Z06ZR1

Yep ! Forget the street tires! Mine was horrible even leaving easy still spun till past the 330 mark and the car is a lot faster but is slower at the track with 775hp give a take a few. But the track was gone 500 cars were running several events.

Stephen02Z06

it was wfarmer.z trying to beat his 10.12 in negative DA. How do I know? I was there and watched the runs at MIR and I know Will. The car couldn't back up the 10.12 from Richmond Dragway, but it wasn't for lack of trying. He was having some issues with tire shake and stability during the passes. He was not happy with the new set of rear tires he had just installed on the exact same wheels as the previous 10.12 pass. 10.2@134 was his best due to these tire issues. He was able to beat his best 60' time as I read the scoreboard and saw a 1.53 on one of his passes. No worries...he will resolve this issue and try again soon.

Stephen02Z06

pic from MIR. My ZL1 in the background. wfarmer.z in the drivers seat.

keagan

Thanks for posting! Wonder why the driver didn’t post but now I know!

zhopper05

Jack - who do you have yours ordered through?

EV2DEMON

Please explain the mechanics behind an engine failure that is directly caused by low mileage. I don't mean "because GM says so". I'd like you to describe the failure mode that is a direct result of low mileage.

Anxious to hear your response.

Mike Jesse

Look at the front wheel, that's probably a skinnie.


No worries here, wheel/tire swap is fine with me.

Stephen02Z06

It is a CCW drag pack. The fronts are definitely narrower than stock but not exactly a "skinny".

427Z0SX

And then there's the nebulous "showroom stock", just to add to the confusion,

meadowz06

BIngo. Drag tires don’t make a car STOCK!

meadowz06

A rear drag slick is not a simple bolt on. And that makes it modified!

blb078

I race and if I see a car without factory tires then it's not stock. Like this car, not that I care but it is what it is. Something on the car is being altered/changed in order to make it go faster. Doesn't matter if it's mechanical, tuning, tires, or reducing weight in some way. The simple fact is if you change the way the car came off the factory line to make it go faster then it's not a stock car. So this car is not "bone stock" as the OP claimed.