[ANSWERED] C7, c7zo6 and c7zr1 manual tranmission and axles
01-18-2019, 05:37 PM
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[ANSWERED] C7, c7zo6 and c7zr1 manual tranmission and axles
The original question is here.
black_c7 asked:
In previous thread tadge answered Fyreant that all c7 manual cars have the same axles, but I found that base c7 have a different axles parts number (20977316 left side + 20977317 right side ), for c7zo6 and c7zr1 (23301162 left side +23301163 right side), pricing is different from both part numbers.
My question is why there is different part numbers and different pricing if they are the same axles?
Also: is the transmission in c7zo6 is the same as the c7zr1 for manual trans?
In previous thread tadge answered Fyreant that all c7 manual cars have the same axles, but I found that base c7 have a different axles parts number (20977316 left side + 20977317 right side ), for c7zo6 and c7zr1 (23301162 left side +23301163 right side), pricing is different from both part numbers.
My question is why there is different part numbers and different pricing if they are the same axles?
Also: is the transmission in c7zo6 is the same as the c7zr1 for manual trans?
Tadge answered:
In reviewing my answer to Fyreant on ZR1 hardware upgrades, what I said was: “The half shafts and prop shaft assembly are carry over from Z06”. That was and still is true. There are a number of part numbers in our service catalog because left and right half shafts are different in diameter and there have been continuous improvements over time. We traditionally use half shafts of different stiffness’s on either side of the car to help with power hop. Power hop occurs when spinning the rear tires on surfaces with friction characteristics that create a stick/slip condition. The stick/slip phenomena alternately winds and unwinds the driveline like a big spring preventing smooth acceleration and creating quite a disturbance in the car. Having a very stiff half shaft on one side will break that tire loose sooner than the one on the other side, creating an asynchrony that helps dampen the resonance of the system. The part numbers you quote for the base C7 are in fact parts that were released for the 2014 model year Stingray. They have a unique interface and so can not be replaced with the newer part numbers. All manual transmission Corvette since the 2015 model year use the 62/63 part numbers. You do see some minor price changes between the older and newer part as our suppliers change the price to us, but the big difference is left to right. As I describe above, the stiffer half shaft is designed with a larger diameter. There is more material and a more complicated construction, that is why the right side parts cost more than the left.
The answer to your final question is, yes, the manual transmission assembly number is the same for Z06 and ZR1, we build both cars with the same trans.
In reviewing my answer to Fyreant on ZR1 hardware upgrades, what I said was: “The half shafts and prop shaft assembly are carry over from Z06”. That was and still is true. There are a number of part numbers in our service catalog because left and right half shafts are different in diameter and there have been continuous improvements over time. We traditionally use half shafts of different stiffness’s on either side of the car to help with power hop. Power hop occurs when spinning the rear tires on surfaces with friction characteristics that create a stick/slip condition. The stick/slip phenomena alternately winds and unwinds the driveline like a big spring preventing smooth acceleration and creating quite a disturbance in the car. Having a very stiff half shaft on one side will break that tire loose sooner than the one on the other side, creating an asynchrony that helps dampen the resonance of the system. The part numbers you quote for the base C7 are in fact parts that were released for the 2014 model year Stingray. They have a unique interface and so can not be replaced with the newer part numbers. All manual transmission Corvette since the 2015 model year use the 62/63 part numbers. You do see some minor price changes between the older and newer part as our suppliers change the price to us, but the big difference is left to right. As I describe above, the stiffer half shaft is designed with a larger diameter. There is more material and a more complicated construction, that is why the right side parts cost more than the left.
The answer to your final question is, yes, the manual transmission assembly number is the same for Z06 and ZR1, we build both cars with the same trans.
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02-12-2019, 03:00 PM
#2
First time I've heard the 2014s have unique axles. Anyone know the specific differences?