Originally Posted by smartbomb

If you read my posts in this thread and places like my350Z you would know that the 350Z and 370Z have identical problems with heat build up.

350Z's in real racing conditions will start to fail their diffs at around the 30 minute mark. SCCA T2 Z's have to install dif coolers or the diffs will fail by locking up. A T2 car is like a street car full modded with bolt ons.

I have a bunch of experience with racing and tracking the 350 and carefully monitoring diff temp. If you are on the track for more than 30 minutes at a time, something will eventually happen in a 350 or 370. With a cooler you will be fine, even with a mechanical LSD, sticky tires and turbos.