locking differential

Old 04-26-2009, 10:08 AM
  #1  
bowhay
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Default locking differential

what are the downfalls of using a locking differential on a street/strip application
because a freind of mine has a eaton locker thats he wants to sell me for cheap
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Old 04-26-2009, 10:42 AM
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TopspeedLowet
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Default Re: locking differential

Originally Posted by bowhay
what are the downfalls of using a locking differential on a street/strip application
because a freind of mine has a eaton locker thats he wants to sell me for cheap
They are unreliable and weak at best. This is why the great deal on it. Put a little power on it and it will be an open carrier in minuets. Any clutch unit is better than an eaton pawl locker type.
Bruce
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Old 04-26-2009, 12:25 PM
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bowhay
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well u see he got it and 3 motors for free with the last reuck he bought
and the guy said he thought it was a locker but wasnt sure......how can u tell if its posi or locking
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Old 04-26-2009, 12:52 PM
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TopspeedLowet
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Clutch types have a clutches on the out board sides of the axle spider gears stacked up usually with a z shaped pre loader spring putting tension on the clutches behind the gears.
The locker type that stink look like the guts to a grandfathers clock and has a locking pawl spring loaded that locks the carrier in posi traction when needed. This is the weak link in this unit.
The better choice for racing looks exactly the same as an open carrier but with the clutches on the outer face of the axle spider gears with the pre-load spring that creates static tension on the clutches the axle pinion retains when installed.
Some 7.5/8" units and some others have cones instead of clutches and are not preferred for racing applications either. The cones wear out fast and make chatter when they slip like a clutch type can without the friction modifier in the gear lube.
Bruce
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Old 04-26-2009, 01:33 PM
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bowhay
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so what would u recomend for a hopped up street car that i tae to the strip every once in a while
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Old 04-26-2009, 01:46 PM
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TopspeedLowet
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The GM clutch type used in the 12 bolt and 8.5" stock applications. Moroso may make one like this also but to be easy the stock GM clutch types can be made very tight and durable for street strip use.
Bruce
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Old 04-26-2009, 02:16 PM
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Tod74
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The old ones had 4 coil springs between the clutches...nop mistaking them when you popped the cover.
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Old 04-26-2009, 06:23 PM
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bowhay
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well i have a gm 8.5 ten bolt and im looking at performance ones..........any sugestions for brand
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Old 04-26-2009, 07:02 PM
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bowhay
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and what about spools?????????????
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Old 04-26-2009, 07:42 PM
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Tod74
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Originally Posted by bowhay
and what about spools?????????????

You do not want to run a spool on the street....some guys do, but trust me you don't want to. ..not for what you are doing. You are asking for a broken axle.
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