[Puddin]

Originally Posted by ZX-10R

"Quality has tanked" is an overgeneralization - compared to what? Ever been in a C6 vette?

AFM and A8 aren't ZL1 issues. Not worried about the pump yet because I have a 6 year certified warranty. There aren't many options in this price range in terms of good handling sports cars over 500 rwhp. Not really interested in a $100k M4 competition that sounds like an angry appliance. LC500 is nice but not very fast

Afm is still an issue for the Zl1 as it uses the same busted lifters as the rest of the Lt line. The fact they have multiple lawsuits for some of these issues speaks volumes on "Quality". And yes I've been in a c6 and also seen in person the quality that was put into their z06 at the time. What a coincidence that the co developed Ford transmission made it to the Zl1 and it actually works.

[gblaue]

Originally Posted by pauly1119

No one really knows for sure but the majority of the failures look to be early to late 2017 build dates. The date is in your drivers door jam. There are a few failures scattered in early 2018 builds but not very many. Overall looks to still be a low number but again no one really knows for sure.

Mine was built on 11/14/16. I was there when it was being built. . I got 33k miles. Hope I’m not jinxing myself. I’ll be doing an oil analysis when it comes out of hibernation in a couple on months.

[pauly1119]

Originally Posted by Puddin

Afm is still an issue for the Zl1 as it uses the same busted lifters as the rest of the Lt line. The fact they have multiple lawsuits for some of these issues speaks volumes on "Quality". And yes I've been in a c6 and also seen in person the quality that was put into their z06 at the time. What a coincidence that the co developed Ford transmission made it to the Zl1 and it actually works.

Ahh yes and if you have the 6 speed also no AFM, I just bought a new GMC truck that is a factory AFM delete but I think they changed the name to DFM now. I’ve said before with GM it’s always something, I’ve had to replace lifter springs on corvettes along with heads all for precaution reasons. This time I’ll let my extended warranty handle any possible issues.

[JBones81]

Originally Posted by ZX-10R

"Quality has tanked" is an overgeneralization - compared to what? Ever been in a C6 vette?

AFM and A8 aren't ZL1 issues. Not worried about the pump yet because I have a 6 year certified warranty. There aren't many options in this price range in terms of good handling sports cars over 500 rwhp. Not really interested in a $100k M4 competition that sounds like an angry appliance. LC500 is nice but not very fast

Have you looked at RS3s? They very reliably run 10s all day on e85 with just other minor bolt ons (intake, turbo inlet, intercooler, etc). You can buy them new for about 65k and the total for bolt ons & e85 tune/tcu tune is about $6k. This is the best all around car I've ever owned. I have more into it than 6k at this point, but even with the first few mods I did - tune, intake, intercooler, brakes and midpipes the car was like a cheat code. I probably should have stopped there, but we know how it is

[ZX-10R]

Originally Posted by Puddin

Afm is still an issue for the Zl1 as it uses the same busted lifters as the rest of the Lt line.

ZL1s do not have active fuel management (search previous threads, this has been debated for years)

Originally Posted by JBones81

Have you looked at RS3s? They very reliably run 10s all day on e85

And what...30 psi of boost? Those boosted to the moon mouse motors won't hold compression beyond 70k miles if driven aggressively, which is fine if you live near a shop that works on Audis, it's just not for me - not to mention tons of oil blowby to deal with at those elevated boost levels. No free lunch, high boost engines are fun but there is always a price to pay. The LT4 is a low stress 9 psi engine that should run forever with regular maintenance

[Gunkk]

Originally Posted by ZX-10R

ZL1s do not have active fuel management (search previous threads, this has been debated for years)

The lifter statement is correct. GM kept the hardware in the engine to keep parts and complexity costs down, but the AFM features of this hardware are unused. The ZL1 does not have the AFM exhaust valves and AFM is not implemented in the ZL1's software.

[JBones81]

Originally Posted by ZX-10R

ZL1s do not have active fuel management (search previous threads, this has been debated for years)



And what...30 psi of boost? Those boosted to the moon mouse motors won't hold compression beyond 70k miles if driven aggressively, which is fine if you live near a shop that works on Audis, it's just not for me - not to mention tons of oil blowby to deal with at those elevated boost levels. No free lunch, high boost engines are fun but there is always a price to pay. The LT4 is a low stress 9 psi engine that should run forever with regular maintenance

They run fine until you upgrade the turbo, at which point you'd want to build the motor. Watch some youtube videos of rs3s running e85...or some turbo swapped guys. Also, remember that the transmissions are insanely quick and the AWD means traction is not an issue. It's more than just the power the 5cyl is making - it's usable at every speed

[Evansa22]

Originally Posted by Puddin

I'd have to agree with Dave. Between the oil pump, the afm liters, and the A8 shudder Gm quality has tanked. I like my Camaro and plan to keep it since everything is going electric but this will be my first and last Gm car.

That's why you do a cam, put in better lifters and new oil pump while you're in there

[Puddin]

Originally Posted by Evansa22

That's why you do a cam, put in better lifters and new oil pump while you're in there

Absolutely but it sucks for guys that don't want to mod their car. Some of the people don't regularly drive their car so before you know it the powertrain warranty is gone and then boom now you've lost an oil pump and looking at a costly repair.

[Puddin]

Originally Posted by ZX-10R

ZL1s do not have active fuel management (search previous threads, this has been debated for years)



And what...30 psi of boost? Those boosted to the moon mouse motors won't hold compression beyond 70k miles if driven aggressively, which is fine if you live near a shop that works on Audis, it's just not for me - not to mention tons of oil blowby to deal with at those elevated boost levels. No free lunch, high boost engines are fun but there is always a price to pay. The LT4 is a low stress 9 psi engine that should run forever with regular maintenance

Like Gunkk said the hardware is still used as part of their parts savings. Sounds like another winner in the "quality" category.

[jvandy50]

Originally Posted by Puddin

Like Gunkk said the hardware is still used as part of their parts savings. Sounds like another winner in the "quality" category.

Yep, it was so confusing ordering parts for a cam install because of those lifters that are present, but not functional. It’s insane a part like that, which is more complicated, actually saves them money

[Evansa22]

Originally Posted by Puddin

Absolutely but it sucks for guys that don't want to mod their car. Some of the people don't regularly drive their car so before you know it the powertrain warranty is gone and then boom now you've lost an oil pump and looking at a costly repair.

Very true, I was mostly just joking. I wish I didn't have to worry about the oil pump these last couple years, but glad I kept an eye on it all this time as it hopefully saved my motor.

To lose the oil pump not under warranty is one thing, to lose a motor while not under warranty will be a much bigger headache.

If someone buys this car with no intentions of mods, I would strongly recommend an extended warranty for piece of mind. However the oil pump issue seems to be resolved on the newer ones, who knows what other issues could pop up like the one with the valve springs.

[JTRJSS]

Just got the call from the dealer. The low oil pressure was caused by a bad oil pump. They changed the oil pump in my car.
2020 ZL1 10 spd auto 15,000 miles.

[MakCamaro]

2020?