Differences between 9" diffs
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Joined: Apr 2005
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From: Clarksville, IN
Differences between 9" diffs I was wondering what the differences are between the Trac Loc, Detroit Locker and Tru Trak. I am trying to put together a 9 inch rear as cheap as possible. I have found a place that builds 3rd members based on your needs. The Trac Loc is cheapest, but was wondering if this would be strong enough for my 600 rwhp nitrous car.
a trac lock is the stock style ford posi. it usess fiber clutches and steels with preload springs. works good, but as with all clutch posi's they will wear and lose they're effectiveness after a while. they can be rebuilt, though.
a Truetrac is a worm gear style unit, and senses tire slippage to actuate the posi. these are the newest on the market in this style, and have proven to be a very durable piece. they are only available in 28 and 31 spline for the ford 9 inch. they are not user serviceable.
the Detroit Locker is a tried and true heavy duty unit, uses male/female teeth to actuate posi. they too are preloaded with springs, and when it differentiates, a audible "clicking" noise is normally heard when the teeth engage and disengage through a corner. it is in a locked up state when going straight. ford 9 inch available up to 35 spline. probably the strongest unit on the market. not as costly as the Truetrac, but quite a bit more than the trac-lock.
a Truetrac is a worm gear style unit, and senses tire slippage to actuate the posi. these are the newest on the market in this style, and have proven to be a very durable piece. they are only available in 28 and 31 spline for the ford 9 inch. they are not user serviceable.
the Detroit Locker is a tried and true heavy duty unit, uses male/female teeth to actuate posi. they too are preloaded with springs, and when it differentiates, a audible "clicking" noise is normally heard when the teeth engage and disengage through a corner. it is in a locked up state when going straight. ford 9 inch available up to 35 spline. probably the strongest unit on the market. not as costly as the Truetrac, but quite a bit more than the trac-lock.
a trac lock is the stock style ford posi. it usess fiber clutches and steels with preload springs. works good, but as with all clutch posi's they will wear and lose they're effectiveness after a while. they can be rebuilt, though.
a Truetrac is a worm gear style unit, and senses tire slippage to actuate the posi. these are the newest on the market in this style, and have proven to be a very durable piece. they are only available in 28 and 31 spline for the ford 9 inch. they are not user serviceable.
the Detroit Locker is a tried and true heavy duty unit, uses male/female teeth to actuate posi. they too are preloaded with springs, and when it differentiates, a audible "clicking" noise is normally heard when the teeth engage and disengage through a corner. it is in a locked up state when going straight. ford 9 inch available up to 35 spline. probably the strongest unit on the market. not as costly as the Truetrac, but quite a bit more than the trac-lock.
a Truetrac is a worm gear style unit, and senses tire slippage to actuate the posi. these are the newest on the market in this style, and have proven to be a very durable piece. they are only available in 28 and 31 spline for the ford 9 inch. they are not user serviceable.
the Detroit Locker is a tried and true heavy duty unit, uses male/female teeth to actuate posi. they too are preloaded with springs, and when it differentiates, a audible "clicking" noise is normally heard when the teeth engage and disengage through a corner. it is in a locked up state when going straight. ford 9 inch available up to 35 spline. probably the strongest unit on the market. not as costly as the Truetrac, but quite a bit more than the trac-lock.
