jleews6

Can someone tell me what the difference in the engine between the ZR1 and the ZO6 ? I know the blower is bigger but is there anything else ?
Thanks.

VirginiaAgent

The Zr1 has a larger supercharger.

Corvette engineers gave the LT5 a larger Eaton supercharger than the LT4, as a result, the ZR1 gulps 52% more air per combustion cycle than the Z06 can. The engines share a deck height, but the ZR1’s LT5 is 2.9″ taller which necessitates a shaker style hood with the top mounted intercooler brick poking through. As a result of the excess heat produced by forced induction, the ZR1 also gets a revised cooling system which features four more heat exchangers than the Z06, for a total of thirteen.

The LT5 also gets a new dual-fuel injection system which uses both direct and port injection for a more efficient and powerful combustion process. Additional mechanical changes include a significantly beefed up crankshaft and a larger throttle body.

Gives an increase of 55 HP and 65 Lbs. of torque at the crank.

23/C8Z

And. Deleted the AFM.

Also the fuel pump is different low side on all Z06 prior introduction of the LT5. A benefit of big brother passing down some enhancements.

Cman01

The HP increase is 105hp at the crank not 55hp, the torque increase is correct.

Z06 650/650 hp/torque
ZR1 755/715 hp/torque

jleews6

Thanks Guys.

23/C8Z

And about 40k in retail purchasing used if not more. But the exclusivity of the ZR1 and depending on how successful the C8Z and C8ZR is. If they are good not great?? I see the C7ZR being a huge steal for those who bought them second hand for 20 30k off msrp. If the C8Z and ZR are great? Than the usual decline will take effect.

BooSSted

IMO the C7ZR is safe for quite some time regardless of the C8. The platform will go unchallenged until the C8ZR is released. Couple that with only one year of sales and limited availability and unreal performance ceiling. The real bargain will be C7Z06. When it comes down to performance, availability (lower price) aftermarket support and did I mention performance ?

To the OP, the differences have been outlined!!
Difference in visible aero, different crank, port injection fuel system. The 2650 blower is a bad ****.

ScottKolek

Thought the Z06 deleted the AFM as well? Mine doesn't have it...

LT4CMG

Unless someone has been in your motor, all factory C7Z06s have that garbage. As soon as my warranty is up, mine will be reworked. I'm currently using paddles religiously to avoid the v4 mode

-ZEEOHSIX-

There's a difference between having AFM valves in your exhaust and having AFM lifters. Z06's do not have AFM valves but all of them have AFM lifters from the factory; that's what enables your car to go into V4 mode.

Aside from the aforementioned horsepower and supercharger differences, there's also some additional cooling and fuel components, of which the 2019 Z06 benefited from. Unfortunately, the Z06 did not get the port injection setup or even provisions that the C7 ZR1 has but, when you really break it down, the heavy hitting differences are going to be a different crank, different supercharger, port injection, throttle body, in-tank fuel pump, more robust cooling on the front end, aero and suspension tuning characteristics.

I tried to weigh the pros and cons of purchasing a C7 ZR1 vs getting a C7 Z06. In the end, I chose the Z06. The differences weren't enough to justify the huge premium in price. For me, a DSC Sport V4 controller, 2650, LG/GSpeed cooling kit, DSX low side and a cam are not only a cheaper option than purchasing a C7 ZR1, it's also more practical in my eyes (not to mention a lot more powerful) since I don't care about warranties--especially depending on the year and entry price of the C7 Z06 that you end up with. Aero bits are also easy to check off to equalize the differences. Hell, you could spend a fraction of this and still have a car that is very comparable to a ZR1. But, I'm also not a emblem ***** so, the exclusivity of owning a ZR1 is wasted on me.

mityaz

The LT5 also uses some special bearings that make it prohibited in Europe.

Always Red Dave

EXACTLY how I shift my car 100% of the time to avoid that GARBAGE mode!

ScottKolek

So yeah, my mistake, I was referring to he AFM valves by the exhaust, not the V4 mode, my mistake.

Dougpaper

I dont believe the bearings have anything to do with europe. the front end design because the supercharger protrudes thru the hood area violating a pedestrian safety situation they have in europe.

23/C8Z

Nope mityaz was correct!

^^^^^^^^^^

Hibbs

so more in detail on the LT5 crank... the only difference is the bearings and maybe a heat treatment process? I wonder why they thought they needed the upgrade for only 60lb more of torque. makes me wonder about applying torque increasing mods to my lt4 if chevy felt the need to beefen the bottom end for such little more power. please deliver the knowlege onto me

quick Ag

LT5 @ ( .050 in) has 200 degrees of intake duration and 207 degrees of exhaust duration, lift is .551 inches and .524 inches respectively. The LT4 @ (.050 in) duration is 189( I) and 233 (E ) of degrees and Lift is .492 and .551 respectively.

ZR1Bob

I read Tadge's comments but I still don't understand why crank bearings in a slightly different metal configuration would prohibit the car from being sold in Europe. I don't doubt it is true, but what possible reason did could the Europeans use to object to Tri-metal bearings? They would never see the light of day and their normal wear would hardly pose a threat to the environment by getting a few molecules of whatever into the oil. Curious. --Bob

rtv900

Keep in mind European politicians are even dumber than our politicians.
I mean hell, they came up with the Paris climate accord a decade ago and only one guy (the france guy) actually tried to do one single tangible policy change of taxing fuel more to reduce consumption, and then the people rioted and destroyed half the city and he ended up reducing the price of fuel, thus achieving the exact opposite result of what the 'accord' set out to do. But at least he tried, nobody else even faked it.

so in short, yes, bearings are illegal there.

Hibbs

Then they have the audacity to force their moral superiority onto us and refer to us as a backwater. Like wtf we installed your current form of puppet governments after your last ones reigned terror for the last 1000 years