Iron 8.8 power levels?

[Avispa]

I have seen aluminum diff’s go higher than mine did. Mine started howling very loud. I had the diff on solid mounts and support in place. Maybe i was just unlucky but my iron diff was only $300 shipped so not a big deal

Yep, both my Terminators developed loud gear whine under load after about 40,000 miles of hard street driving, as in AFTER putting in a Whipple 2.0 on an already 60,000+ mile car. Didn't fail, but new gears were in the cards. Have no idea why Ford made those out of aluminum. It's not unsprung weight on an IRS.

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