C7 ZR1 vs. Z06 Parts Comparison
02-04-2018, 08:07 AM
#1
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St. Jude Donor '14
C7 ZR1 vs. Z06 Parts Comparison
I thought I'd drop a thread in here that discusses some of the less obvious parts sharing between the two performance machines.
The ZR1 E99 ECM is new, which communicates with the new Fuel Pump Injector Control Module for the port injection, so differences in firmware will likely make a port injection retrofit package very difficult since the new ECM's firmware will likely not communicate easily with the previous Z06 E92 ECM.
The M7 and A8 transmissions are shared, but I'm sure the ZR1 will have the latest and greatest programming to not only account for the power, but also improved shifting.
The LT5 and LT4 use the same low side tank pumps so anyone wanting to run ethanol or big power will still need to address this
The LT5 and LT4 use the same high pressure fuel pump and injectors
The LT5 and LT4 use the same cylinder heads
The LT5 and LT4 use the same pistons
The LT5 has an AFM-less valley plate
The LT5 has different crank and connecting rods, likely for the added power
The LT5 has a different camshaft
The ZR1's front wheels are .5" wider; however, only 7mm of the 12.5mm sits to the outside, so I do think the car is slightly wider up front, but how much I am still unsure. I'm hoping for 1".
The ZR1 uses a triple heat exchanger system as well as shares the center heat exchanger with the Z06, but that PN changed for 2019 as well.
The ZR1 uses TWO heat exchanger pumps for the separate coolant brick loops like we do on our ATS V kits
The ZR1 has a 95mm throttle body vs the Z06 87mm
The ZR1 has a different pressure active exhaust; however, I'm not sure if this is accounted for in the bypass valves with the operation, or it's an entirely different exhaust
The ZR1 E99 ECM is new, which communicates with the new Fuel Pump Injector Control Module for the port injection, so differences in firmware will likely make a port injection retrofit package very difficult since the new ECM's firmware will likely not communicate easily with the previous Z06 E92 ECM.
The M7 and A8 transmissions are shared, but I'm sure the ZR1 will have the latest and greatest programming to not only account for the power, but also improved shifting.
The LT5 and LT4 use the same low side tank pumps so anyone wanting to run ethanol or big power will still need to address this
The LT5 and LT4 use the same high pressure fuel pump and injectors
The LT5 and LT4 use the same cylinder heads
The LT5 and LT4 use the same pistons
The LT5 has an AFM-less valley plate
The LT5 has different crank and connecting rods, likely for the added power
The LT5 has a different camshaft
The ZR1's front wheels are .5" wider; however, only 7mm of the 12.5mm sits to the outside, so I do think the car is slightly wider up front, but how much I am still unsure. I'm hoping for 1".
The ZR1 uses a triple heat exchanger system as well as shares the center heat exchanger with the Z06, but that PN changed for 2019 as well.
The ZR1 uses TWO heat exchanger pumps for the separate coolant brick loops like we do on our ATS V kits
The ZR1 has a 95mm throttle body vs the Z06 87mm
The ZR1 has a different pressure active exhaust; however, I'm not sure if this is accounted for in the bypass valves with the operation, or it's an entirely different exhaust
Last edited by Ben@WeaponX; 02-06-2018 at 03:31 PM.
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02-04-2018, 08:10 AM
#2
"The ZR1 uses TWO heat exchanger pumps for the separate coolant brick loops like we do on our ATS V kits"
It'll be interesting to see if they've done anything to address the sensitivity to air in the system and cavitation of the pumps.
It'll be interesting to see if they've done anything to address the sensitivity to air in the system and cavitation of the pumps.
02-04-2018, 12:21 PM
#3
Team Owner
I thought I'd drop a thread in here that discusses some of the less obvious parts sharing between the two performance machines.
The ZR1 E99 ECM is new, which communicates with the new Fuel Pump Injector Control Module for the port injection, so differences in firmware will likely make a port injection retrofit package very difficult since the new ECM's firmware will likely not communicate easily with the previous Z06 E92 ECM.
The M7 and A8 transmissions are shared, but I'm sure the ZR1 will have the latest and greatest programming to not only account for the power, but also improved shifting.
The LT5 and LT4 use the same low side tank pumps so anyone wanting to run ethanol or big power will still need to address this
The LT5 and LT4 use the same high pressure fuel pump and injectors
The LT5 and LT4 use the same cylinder heads
The LT5 and LT4 use the same pistons
The LT5 has an AFM-less valley plate
The LT5 has different crank and connecting rods, likely for the added power
The LT5 has a different camshaft
The ZR1's front wheels are .5" wider; however, only 5mm of that is to the outside, so I do think the car is slightly wider up front, but how much I am still unsure. I'm hoping for 1".
The ZR1 uses a triple heat exchanger system as well as shares the center heat exchanger with the Z06, but that PN changed for 2019 as well.
The ZR1 uses TWO heat exchanger pumps for the separate coolant brick loops like we do on our ATS V kits
The ZR1 has a 95mm throttle body vs the Z06 87mm
The ZR1 has a different pressure active exhaust; however, I'm not sure if this is accounted for in the bypass valves with the operation, or it's an entirely different exhaust
The ZR1 E99 ECM is new, which communicates with the new Fuel Pump Injector Control Module for the port injection, so differences in firmware will likely make a port injection retrofit package very difficult since the new ECM's firmware will likely not communicate easily with the previous Z06 E92 ECM.
The M7 and A8 transmissions are shared, but I'm sure the ZR1 will have the latest and greatest programming to not only account for the power, but also improved shifting.
The LT5 and LT4 use the same low side tank pumps so anyone wanting to run ethanol or big power will still need to address this
The LT5 and LT4 use the same high pressure fuel pump and injectors
The LT5 and LT4 use the same cylinder heads
The LT5 and LT4 use the same pistons
The LT5 has an AFM-less valley plate
The LT5 has different crank and connecting rods, likely for the added power
The LT5 has a different camshaft
The ZR1's front wheels are .5" wider; however, only 5mm of that is to the outside, so I do think the car is slightly wider up front, but how much I am still unsure. I'm hoping for 1".
The ZR1 uses a triple heat exchanger system as well as shares the center heat exchanger with the Z06, but that PN changed for 2019 as well.
The ZR1 uses TWO heat exchanger pumps for the separate coolant brick loops like we do on our ATS V kits
The ZR1 has a 95mm throttle body vs the Z06 87mm
The ZR1 has a different pressure active exhaust; however, I'm not sure if this is accounted for in the bypass valves with the operation, or it's an entirely different exhaust
I had heard the crank is the same except for the larger key way to hold the crank pulley.
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RJ Joshi (12-08-2021)
02-04-2018, 01:18 PM
#4
Drifting
I thought I'd drop a thread in here that discusses some of the less obvious parts sharing between the two performance machines.
The ZR1 E99 ECM is new, which communicates with the new Fuel Pump Injector Control Module for the port injection, so differences in firmware will likely make a port injection retrofit package very difficult since the new ECM's firmware will likely not communicate easily with the previous Z06 E92 ECM.
The M7 and A8 transmissions are shared, but I'm sure the ZR1 will have the latest and greatest programming to not only account for the power, but also improved shifting.
The LT5 and LT4 use the same low side tank pumps so anyone wanting to run ethanol or big power will still need to address this
The LT5 and LT4 use the same high pressure fuel pump and injectors
The LT5 and LT4 use the same cylinder heads
The LT5 and LT4 use the same pistons
The LT5 has an AFM-less valley plate
The LT5 has different crank and connecting rods, likely for the added power
The LT5 has a different camshaft
The ZR1's front wheels are .5" wider; however, only 5mm of that is to the outside, so I do think the car is slightly wider up front, but how much I am still unsure. I'm hoping for 1".
The ZR1 uses a triple heat exchanger system as well as shares the center heat exchanger with the Z06, but that PN changed for 2019 as well.
The ZR1 uses TWO heat exchanger pumps for the separate coolant brick loops like we do on our ATS V kits
The ZR1 has a 95mm throttle body vs the Z06 87mm
The ZR1 has a different pressure active exhaust; however, I'm not sure if this is accounted for in the bypass valves with the operation, or it's an entirely different exhaust
The ZR1 E99 ECM is new, which communicates with the new Fuel Pump Injector Control Module for the port injection, so differences in firmware will likely make a port injection retrofit package very difficult since the new ECM's firmware will likely not communicate easily with the previous Z06 E92 ECM.
The M7 and A8 transmissions are shared, but I'm sure the ZR1 will have the latest and greatest programming to not only account for the power, but also improved shifting.
The LT5 and LT4 use the same low side tank pumps so anyone wanting to run ethanol or big power will still need to address this
The LT5 and LT4 use the same high pressure fuel pump and injectors
The LT5 and LT4 use the same cylinder heads
The LT5 and LT4 use the same pistons
The LT5 has an AFM-less valley plate
The LT5 has different crank and connecting rods, likely for the added power
The LT5 has a different camshaft
The ZR1's front wheels are .5" wider; however, only 5mm of that is to the outside, so I do think the car is slightly wider up front, but how much I am still unsure. I'm hoping for 1".
The ZR1 uses a triple heat exchanger system as well as shares the center heat exchanger with the Z06, but that PN changed for 2019 as well.
The ZR1 uses TWO heat exchanger pumps for the separate coolant brick loops like we do on our ATS V kits
The ZR1 has a 95mm throttle body vs the Z06 87mm
The ZR1 has a different pressure active exhaust; however, I'm not sure if this is accounted for in the bypass valves with the operation, or it's an entirely different exhaust
02-04-2018, 03:31 PM
#5
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Ben, where does this info come from? Reason I ask is we have been trying to confirm for a while if the low side pumps were different or not and no published info has confirmed it. I would think the low side pump would have had to been upgraded to account for the extra fuel needed for the PFI. If it is the same, how are they providing the supplemental fuel for PFI then? A second intank pump?
Ant
Ant
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02-04-2018, 03:37 PM
#6
Melting Slicks
Ben, where does this info come from? Reason I ask is we have been trying to confirm for a while if the low side pumps were different or not and no published info has confirmed it. I would think the low side pump would have had to been upgraded to account for the extra fuel needed for the PFI. If it is the same, how are they providing the supplemental fuel for PFI then? A second intank pump?
Ant
Ant
02-07-2018, 07:08 AM
#9
Drifting
02-18-2018, 12:47 PM
#10
Safety Car
Ben, where does this info come from? Reason I ask is we have been trying to confirm for a while if the low side pumps were different or not and no published info has confirmed it. I would think the low side pump would have had to been upgraded to account for the extra fuel needed for the PFI. If it is the same, how are they providing the supplemental fuel for PFI then? A second intank pump?
Ant
Ant
02-18-2018, 01:50 PM
#12
Team Owner
02-18-2018, 03:38 PM
#13
Melting Slicks
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2023 C2 of the Year Finalist - Unmodified
2021 C2 of the Year Finalist - Unmodified
2015 C3 of the Year Finalist
Does that mean no more limp mode when it gets hot?
02-18-2018, 05:17 PM
#14
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St. Jude Donor '14
This is true for 2019s, but false for previous years. New pump for platform on 19s. Single line feeds to the engine like before, Tees off to the same HPFP and continues on under the 2650 to the back side of the fuel rail.
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mikelj (02-18-2018)
02-18-2018, 06:44 PM
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Ben, where does this info come from? Reason I ask is we have been trying to confirm for a while if the low side pumps were different or not and no published info has confirmed it. I would think the low side pump would have had to been upgraded to account for the extra fuel needed for the PFI. If it is the same, how are they providing the supplemental fuel for PFI then? A second intank pump?
Ant
Ant
I don’t say anything for certain unless it’s been confirmed. That’s how I have the TB in my hands before it’s released now. 
I’m wondering the cam now as I’m curious to see if they bumped the lift on the Fuel lobe a little for the HPFP or if it wasn’t worth the R&D since doing port anyway. 750bhp can practically be supplied by the 18 Z06 pump so it didn’t need much more. LT5 injectors are a new PN but likely smaller than even LS3 injectors. I have one on the way now to flow test.
I said the Z06 was 650hp before it was out and if you go back I said the ZR1 would be 750hp before it was announced
. Imagine the C8 leaks LOL
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02-18-2018, 07:05 PM
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From the same source that gets me all of my info
I don’t say anything for certain unless it’s been confirmed. That’s how I have the TB in my hands before it’s released now. I’m wondering the cam now as I’m curious to see if they bumped the lift on the Fuel lobe a little for the HPFP or if it wasn’t worth the R&D since doing port anyway. 750bhp can practically be supplied by the 18 Z06 pump so it didn’t need much more. LT5 injectors are a new PN but likely smaller than even LS3 injectors. I have one on the way now to flow test.
I said the Z06 was 650hp before it was out and if you go back I said the ZR1 would be 750hp before it was announced
. Imagine the C8 leaks LOL I was sooo hoping the LPFP was going to be upgraded. Sad to hear its not. Another 15-25% flow from it would be huge.
Guess I will have a low side system in my future at some point. Lol
Ant
02-18-2018, 08:34 PM
#20
The ZR1 E99 ECM is new, which communicates with the new Fuel Pump Injector Control Module for the port injection, so differences in firmware will likely make a port injection retrofit package very difficult since the new ECM's firmware will likely not communicate easily with the previous Z06 E92 ECM.
100% can not write an E99 file into an E92 or E92A, but the communications will just need an interpreter.