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Old 10-09-2020, 03:39 PM
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SSLance SSLance is offline
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Strangely, I didn't take one picture while performing my latest upgrade. Not one...

So text will have to do to keep you all in the loop. A friend graciously offered to loan me a third member with a Gleason Torsen differential and 3.89:1 gears so we swapped it in this morning.

My Detroit Locker had been acting a bit funny ever since the track day when I hurt the engine and I didn't quite trust it anymore. It started shuddering on decel and making all sorts of weird clanks and clunks and had a "dartiness" to it on the street. Plus, I have been wanting to ditch it ever since the new big sway bar install up front as it just isn't needed any longer and it detriments were outweighing it's good traits.

I was anxious to see how much metal was in the bottom of the case and what else we may find and honestly, it all looked and felt pretty normal. Gears look decent still as well. IF there is anything wrong with it, it's inside the locker itself.

Driving the Gleason is pleasurable for sure. It basically acts and feels like an open differential until you stab the gas enough to spin a tire which it then instantly and smoothly engages as a locker and spins both equally. No strange dartiness, no clunks or clangs, just smooth operating. The 3.89 gear is great for street driving. Haven't had it out on the highway yet but I expect it to shine there as well.

For SCCA\second gear courses I also expect it to shine. Looking at drive ratio calculators it appears that it'll top out at 71 mph at 6500 RPM which is perfect.

First gear Good Guys courses it hurts a bit more though. 6500 with the 3.50 was 51 mph while 6500 with the 3.89 will be 47 mph. 7,000 RPM gets it back up to around 51 mph though. I may be just a bit limited on top speed in first gear but it should pull harder getting there and the Torsen should make getting around the tight turns better as well so who knows...

We'll race it next Saturday with SCCA, that will be it's first real test. Personally...I can't wait to feel how it acts in the first high speed sweeper. I know I'm gonna LOVE it. I'm pretty sure I'll dig the lower gear for pulling out of corners as well.
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1985 Monte Carlo SS Street Car
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