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Old 01-28-2014, 09:43 PM   #1
408strokerguy
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Default DO you need a built rear to run a 10sec pass

hello everyone just wondering i am going to need to build my rear to get into the 10's. Also will my stock trans hold up. I have a 99 FRC
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Old 01-29-2014, 02:09 AM   #2
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Advisable, especially with a stick.
Basically a simple rebuild with clutches, seals and C6 Z06 axle stubs. A 3 rib case is preferred, not sure if the 99 had one or not?
If you can do the work yourself, not even too expensive.
Ron
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Old 01-29-2014, 12:30 PM   #3
123sugey
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Slip the clutch and don't power shift and it can hold. But, at some point (1st pass or 100 passes later) your stock rear will give in. What mods do you have ?
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Old 01-29-2014, 11:33 PM   #4
408strokerguy
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Thanks for the response guys. I have an iron 408ci, full exhaust, fast102manifold and TB, build that's going in my car. Just trying to figure out exactly what to do with my rear/trans.I plan to run nitrous but don't know what kit I should buy should buy?? Any suggestions would be appreciated...
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Old 01-30-2014, 06:44 PM   #5
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Quote:
Originally Posted by RonSSNova View Post
Advisable, especially with a stick.
Basically a simple rebuild with clutches, seals and C6 Z06 axle stubs. A 3 rib case is preferred, not sure if the 99 had one or not?
If you can do the work yourself, not even too expensive.
Ron
3-rib cases started in '01+, so he has the weaker single rib. I cut a best of 1.54 after ~150 passes with the stock rearend and just a 4.10 gear swap before the driverside output shaft sheered, which I believe is just a matter of time with metal fatigue. I put in a 300m shaft and another ~150 passes and no issues with a best of 1.49 and went 10s as you can see below in my sig. Though I had less power and more gear which helps match rpms and wheel speed faster, clutch slippage to take the strain off the drivetrain is going to be key to making it last as well as not dead hooking or having wheel hop. The latter I found best avoided by running a biasply tire, hope this helps.
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Old 02-03-2014, 08:41 PM   #6
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I have a built diff. Went through 1 stocker and 1 built one from someone I didn't know. Finally did it right and took it to rpm. I don't have a 3 rib and it's not needed if you get a dte diff brace. Which I think every c5 should have
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Old 03-04-2014, 08:06 PM   #7
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eventually I will upgrade my diff to all C6Z06 internals, but that won't be until next year. In the mean time I will be putting on a ECS brace to go with the Hinson diff mount I already have. Already have the bias plys to help cushion the diff on launch lol.
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Old 03-04-2014, 08:06 PM
 
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