What are the advantages of a Detroit locker or a Sure grip. I know the cone type posi aren't very serviceable compared to to the clutch type posi but I have never had a Detroit locker or even driven in many cars with a locker.

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1966 Signet
Turbo Slant Six

I wouldn't use a locker on a street car......... Either both wheels are driven, or 1 wheel freewheels for differential action; nothing inbetween.

I'd look into a truetrac.

It's a gear-driven limited slip that doesn't need special gear oil, and doesn't have any clutches to wear out.

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Agreed. Truetrac or clutch suregrip, or new Auburn posi unit.

Lou

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Home of Slant6-powered fun machines since 1988

Even though my 66 car is street legal I don't drive it much on the street and I really want to use it for racing. That's the plan at least. I have a 65 car that I want to fix up for the street.

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1966 Signet
Turbo Slant Six

For street/strip and not worrying about other things (handling, unlock/lock transitions), the Detroit Locker would work fine. The Suregrip/Auburn would work very well too, as would the truetrac, on the strip. For just drag racing, just get a spool.

Lou

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Home of Slant6-powered fun machines since 1988

I had an auburn in a 93 mustang that I wasn't very happy with, after about 6 months of hard use/abuse it wasn't much of a posi anymore. That is why I was looking for a clutch type posi when I found a good deal on a 489 cased Detroit locker.

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1966 Signet
Turbo Slant Six

Well I bought the 3rd member with the Detroit locker, its a 489 case that had been rebuilt 2 years ago with the locker, gears and new bearings.

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1966 Signet
Turbo Slant Six