Strength of rear axles and drive shafts
 

What is the strength of the axels and drive shafts with drag radials ... is there a range where they become a issue or is it to random .. I can’t really find any info about it

They become an issue around 600-650hp. Get above that and you will need some DSS Pro Level axles.

So it’s more axel issue than driveshaft ? I would assume TQ around 550+ at that hp range as well

Yes, I am sure the driveshaft may be an issue somewhere. No sure on that one.

By design the axles should fail first. Our driveshaft is carbon fiber I believe, so I can't imagine what replacing one would cost. :eekdance:

$1,238.99. :tiphat:

FWIW, most are putting on $2000 1000hp rear axles before considering replacing the OEM driveshaft.

Just wondering what are the odds of the factory breaking ..haven’t seen much info on them breaking ...do most people not change them unless they build bottom end of the motor I mean 600-650 hp is more less the upper end without building

I’ve seen stock everything go 1.50sec.60’.
That’s hooking pretty dang good; for a 3300-3400-Z (minus driver).
Shouldn’t be an issue for you, unless you’re launching harder than that...Most of your lower 10sec & the (1) high 9sec 1320ft. Z , use full blown drag slicks.
As mentioned above: axles are weaker than driveshaft: So if you’re fortunate to have that much power to the wheels & launching hard enough to break an axle,,,I’d say congratulations. As not many people have actually done it.
0 reports that I’ve seen on CF driveshaft breaking.
You must be getting loaded up & running in Darlington soon?
Unsure when you go,,,I’d like to come out.
I’ve ran @CarolinaDragway a few times in Jackson SC.
A 10sec. Pass would be awesome :tup:

I've seen one. But it wasn't due to power. The damage was caused by an idiot who didn't reconnect the exhaust piping.

http://www.the370z.com/engine-drivet...ml#post3261769

I’m no where near that power level ...and I’m am heading to darlington in September ...Just trying to get all my ducks in a row before hand ..better to know average limits

:icon18:
I remember that thread.

Tony has broken a couple axels in his G35 sedan HR at the drag strip. Not sure what time he was running but I’d guess 600-650whp.

What kinda tire ? Slicks or drag radials ?

I don’t recall but they were street tires

Are 350/g35 axels different from 370/g37 axels?

Don’t know but they are listed different on the Driveshaft Shop website.

If you recall Fast Intentions broke an axle when they during one one of their runs when they were testing the prototype twin turbo build and it was on street tires I believe. It is really not that uncommon for an axle to break at the drag strip. I also believe SOHO broke one as well, they were on drag radials. I think it is a matter of rolling the dice at your power level. You can buy several set of oem axles for the price and you may never break one....or you can spend the money an not ever worry about it.

$2300/set is pretty steep

:iagree: You can go through a several sets of oem before you hit that number! I wouldn't do it unless I was well over 600 tq at the rear tires. I don't drag race so even having those kind of numbers I would not upgrade.

That's about what I paid for my front axles from RCV for my PowerWagon. That's about avg price for aftermarket axles.

Not everyone needs the pro version. Level 2 500hp are about $900 for a set (I'm guessing these would hold up at a power level where the OEM start to fail). Level 5 900 hp are about $1700 for a set. The Pro-Level 1200 hp are $2200 for a set.

:driving:

Strength of rear axles and drive shafts
 

That’s for the 350/G35. On the 370/G37 Page there’s only the $2,300 set.

Yeap, I lucked up and bought my set used.

Is that f@cked up, or lucked out? :rofl2:

Ok that makes more sense. I found a site that had the Level 2 and Level 5 versions listed for all four of those vehicles.