This thread is "kinda" long, but relevant. I don't make over 500HP and on Billboards I broke a stub axle (granted it was at the drag strip
). But that was WITH 31 spine axles.
I think the axle material they used was too soft (DCEL was going to test the metallurgy but then moved to a new company, so that's on temp hold, but I'll report back when I get it tested). Another guy with a 289 ERA broke a stub axle the same weekend.
Upgrade to 31 spline chrome moly for the peace of mind. You will probably do more spirited driving than you think and its easier to upgrade now than replace them later. Removing the diff was a real PITA. To me this is one of those no-brainer upgrades.
Need help diagnosing a clutch/tranny problem
EDIT: added the link
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