CV Axle Rating

From what I gather the axles are not the weak point.
The axle disconnect, intermediate shaft and the 4l70 output shaft will probably go before the axles. Most likely the first two I mentioned though

Mitch808 said:

From what I gather the axles are not the weak point.
The axle disconnect, intermediate shaft and the 4l70 output shaft will probably go before the axles. Most likely the first two I mentioned though

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All have gone already, lol! 💰💰💰

Trans went - Replaced with an RPM Transmission - Level X RPM 4L70E Race Transmission and Precision Vigilante 3800 triple disk converter.

Then the front diff, intermediate shaft, and coupler went - Replaced with Bully Racing Torsen, cryo stuff, Timken bearings, etc (did ARP Pro Series Connecting Rod Bolts 234-6301 while I was back at the pan again since I didn't do them with the PCofNC oil pickup tube/baffle kit).

Then the front CV axles went - Just replaced them with Precision cv axle shafts.

Since posting the original post, I have heard that the Precision cv axle shafts have been proven 1000+ whp! I am far from that. Just wondering what will break next.

Thanks

If you stay with a 4L70 trans it will most likely break again. Not that it's a bad trans but by design it's torque/load limit is about maxed between the HP & weight of the TBSS. Trans mods do buy you something but IMO if you add another 150 hp & mod the trans you're still near the limit of what it can take. Best example is the express vans of the same Era -6.0L got a 4L80. The 3500 series got 4L85s at some point.

Payerman said:

If you stay with a 4L70 trans it will most likely break again. Not that it's a bad trans but by design it's torque/load limit is about maxed between the HP & weight of the TBSS. Trans mods do buy you something but IMO if you add another 150 hp & mod the trans you're still near the limit of what it can take. Best example is the express vans of the same Era -6.0L got a 4L80. The 3500 series got 4L85s at some point.

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I agree and a misunderstood point of a 700hp or even a 1000hp capable trans is the weight of the vehicle plays a part as well as available traction. A tbss probably could knock 20-30% of that trans rating. On the higher end with an awd vs rwd trans.

But if you’re just dairying it and not actually racing it, it’s probably just fine IF the trans was built reliably.

As much as I love a built 4L70, I totally agree that at around 850+ crank hp with stock weight, you're definitely decreasing it's lifespan, depending on how much it's beat on
A stock 4L70 will survive behind 500hp if you pull 500 pounds off it.
A built 4L70 will survive behind 1000hp if you pull 1000lbs off
More than a hand-full of racers on yellow bullet have performabuilt 4L70's living for years behind 1100+hp and slicks, they all weigh less than 3400lbs though