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We have adapter C6Z diffs into them now. We broke 2 C7 Diffs in one of our cars and have since installed a Level 4 RPM C6Z diff and its been good since.
I am sure it broke from 2 years of abuse at the track and massive tire shake last time out at the track. We are woking on different gears set up and options from the c5-c6 cars.
Frans96ss - Could you provide more information on how the adapter works, or if this is a part that you manufacture and sell to work with C6Z diff that you're currently using?
Last edited by Elite275; Nov 30, 2016 at 07:51 AM.
2025 C8 Stingray of the Year Finalist - Unmodified
2024 Corvette of the Year Finalist - Unmodified
2023 C6 of the Year Winner - Unmodified
2020 C6 of the Year Finalist - Unmodified
2019 C6 of Year Finalist (appearance mods)
new supplier of rear differential assemblies to GM for the C7 models, not the same supplier as the prior generations, so some unexpected "growing and learning pains" to be expected.
another scenario is that these meet original GM specifications, but vehicle produces more torque, or load than originally anticipated and originally designed for.
I also broke the spider gears in my 2015 Z06's A8 differential after a year of drag racing.Instead of repairing the unit back to stock specs or replacing with another stock unit, I modified a stock unit to use 4 spider gears instead of the 2 it was designed with. It has been working excellently , with many passes since the modification, including completing Hot Rod's Drag Week 2016 event.When I did the modifications I started with a complete carrier assembly from a Z51 in order to take advantage of the higher ratio (2.73 vrs 2.41) of the Z51. I have some pictures and can explain the process and procedures I went through if anyone is interested.Ed Urcis
I also broke the spider gears in my 2015 Z06's A8 differential after a year of drag racing.Instead of repairing the unit back to stock specs or replacing with another stock unit, I modified a stock unit to use 4 spider gears instead of the 2 it was designed with. It has been working excellently , with many passes since the modification, including completing Hot Rod's Drag Week 2016 event.When I did the modifications I started with a complete carrier assembly from a Z51 in order to take advantage of the higher ratio (2.73 vrs 2.41) of the Z51. I have some pictures and can explain the process and procedures I went through if anyone is interested.Ed Urcis
That would be amazing! I'd love to be able to make an all out pass without breaking the spiders on the first launch.
Ed,
I for one would love to hear more about the 4-pinion spider setup, I have done them in fords and solved the issue. Did you use a block to support the inner end of the 2 short spider pins or did you machine flats on 2 long ones so they interlock?
I know for certain I am going to have issues here, I may not get my 1.29 60 but the 1.32-34 is coming....
Ed,
I for one would love to hear more about the 4-pinion spider setup, I have done them in fords and solved the issue. Did you use a block to support the inner end of the 2 short spider pins or did you machine flats on 2 long ones so they interlock?
I know for certain I am going to have issues here, I may not get my 1.29 60 but the 1.32-34 is coming....
John
I actually made a block like a 9" Ford has AND machined a radius on the short pins that allowed them to butt up to the long cross pin.If you want to send me a PM with your regular email I will send you some pictures. I can also give you my phone numbers if you want to discuss this or anything else. Ed