A queston about Lockers
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Junior User
Joined: Feb 2008
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From: Colorado
A queston about Lockers
Hello all,
Lately after getting my engine and transmission tuned right to where I like it (both motor and trans rebuilt) my new delima has to be now my rear end. I have alot more power now with my new 390 but I don't like seeing one wheel burnouts when I do them. (very rarely) Im trying to limit my budget since the motor mostly has taken a good chunk out of this restoration fund. So Im wondering to get a "trac-loc" rearend is a locker the best way to go for the price? I have read the negatives about lockers but Im hoping this truck will stay on dry pavement all the time. And if lockers are the way to go what is a recommended company to go and buy one from. A couple of lockers I have looked at are pretty comparable to price like the aussie lockers and powertrax lockers. I like the powertrax a little better from what I have read because they are made in the usa. Any way any imput is greatly appreicated.
P.S. The truck has a 9 inch in the rear I don't know however the gear ratio or the spline count.
Lately after getting my engine and transmission tuned right to where I like it (both motor and trans rebuilt) my new delima has to be now my rear end. I have alot more power now with my new 390 but I don't like seeing one wheel burnouts when I do them. (very rarely) Im trying to limit my budget since the motor mostly has taken a good chunk out of this restoration fund. So Im wondering to get a "trac-loc" rearend is a locker the best way to go for the price? I have read the negatives about lockers but Im hoping this truck will stay on dry pavement all the time. And if lockers are the way to go what is a recommended company to go and buy one from. A couple of lockers I have looked at are pretty comparable to price like the aussie lockers and powertrax lockers. I like the powertrax a little better from what I have read because they are made in the usa. Any way any imput is greatly appreicated.
P.S. The truck has a 9 inch in the rear I don't know however the gear ratio or the spline count.
Posting Guru
Joined: Dec 2004
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From: Shasta Lake, Ca.
If the rear end is Stock OEM, its a 29 spline unit. If your using it for every day driver, then aLimited Slip is more of what you need, Not a Full Locker. This of couse is not always true, Myself use my truck daily and doa lot of towing and Boat tows, pulling up a wet ramp, a full lock rear end is great, But Sharp turns I cring every time.
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Junior User
Joined: Feb 2008
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From: Colorado
If the rear end is Stock OEM, its a 29 spline unit. If your using it for every day driver, then aLimited Slip is more of what you need, Not a Full Locker. This of couse is not always true, Myself use my truck daily and doa lot of towing and Boat tows, pulling up a wet ramp, a full lock rear end is great, But Sharp turns I cring every time.
Posting Guru
Joined: Dec 2004
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From: Shasta Lake, Ca.
Posting Guru
Joined: Jan 2005
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From: The Vieux Ford, Kansas
I have had a 68 and a 70 apart. The 70 was a long bed 6cyl and it had 31 spline the 68 was a short bed with a 390 and it was a 28 spline. I have no idea which ones got 31 and which got 28 I would pull an axle and verify the spline count before you buy anything.
-Johnboy
-Johnboy
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Junior User
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From: Colorado
I have had a 68 and a 70 apart. The 70 was a long bed 6cyl and it had 31 spline the 68 was a short bed with a 390 and it was a 28 spline. I have no idea which ones got 31 and which got 28 I would pull an axle and verify the spline count before you buy anything.
-Johnboy
-Johnboy
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Laughing Gas
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Seems like there was a post some time back that told how to ID spline count by the end of the axle. Some have 2 does, some have an hourglass shaped design. Can't remeber which was which though.
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Posting Guru
Joined: Jan 2005
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From: The Vieux Ford, Kansas
That myth was debunked recently in this thread. https://www.ford-trucks.com/forums/8...0-9-axles.html
-Johnboy
-Johnboy
Post Fiend
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Just FYI, the "trac-loc" is not a "Locker" it is a LS unit. This two pinion design os not known for its strength.
Just because the term Loc is used, does not make it a locking differential.
Understand the differences or you may either be let down or surprised.
If you plan on running a locker on the street (I do, a Detroit) know some of the characteristics of the real locker and determine whether or not this is really what you want.
A quaity LS unit can have wonderful driving manners and have enough tension to apply power to both axles.
As long as your upgrading the carrier, it might be a nice time to upgrade axles too. 28 Splines are taperd and mght struggle with the added traction of a locker.
Just because the term Loc is used, does not make it a locking differential.
Understand the differences or you may either be let down or surprised.
If you plan on running a locker on the street (I do, a Detroit) know some of the characteristics of the real locker and determine whether or not this is really what you want.
A quaity LS unit can have wonderful driving manners and have enough tension to apply power to both axles.
As long as your upgrading the carrier, it might be a nice time to upgrade axles too. 28 Splines are taperd and mght struggle with the added traction of a locker.
Thread Starter
|
Junior User
Joined: Feb 2008
Posts: 61
Likes: 0
From: Colorado
Just FYI, the "trac-loc" is not a "Locker" it is a LS unit. This two pinion design os not known for its strength.
Just because the term Loc is used, does not make it a locking differential.
Understand the differences or you may either be let down or surprised.
If you plan on running a locker on the street (I do, a Detroit) know some of the characteristics of the real locker and determine whether or not this is really what you want.
A quaity LS unit can have wonderful driving manners and have enough tension to apply power to both axles.
As long as your upgrading the carrier, it might be a nice time to upgrade axles too. 28 Splines are taperd and mght struggle with the added traction of a locker.
Just because the term Loc is used, does not make it a locking differential.
Understand the differences or you may either be let down or surprised.
If you plan on running a locker on the street (I do, a Detroit) know some of the characteristics of the real locker and determine whether or not this is really what you want.
A quaity LS unit can have wonderful driving manners and have enough tension to apply power to both axles.
As long as your upgrading the carrier, it might be a nice time to upgrade axles too. 28 Splines are taperd and mght struggle with the added traction of a locker.
Tuned
Joined: Dec 2004
Posts: 340
Likes: 8
From: Rock Hill, SC
I have been running a trac-loc for about five years now. Even with the friction modifier added it still makes the rear end wag a little in a tight turn under acceleration. It has never caused a problem though. The limited slip version they offer has less chirp from the tires and no wag on the tight turns. My brother in law has one of those in his 1966
F100 and I noticed on launches the right tire spins a foot maybe before the other side kicks in. My trac-loc they both engage at the same time.
F100 and I noticed on launches the right tire spins a foot maybe before the other side kicks in. My trac-loc they both engage at the same time.
Posting Guru
Joined: Dec 2004
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From: Shasta Lake, Ca.
I myself run a welded Diff in a ford 9in. Both tutn fully 1 to 1 at all times, while turns I get chriping, I get a lot more traction to pull up wet boat ramps, and for me, this is the most important reason why I went my way.
Tuned
Joined: Dec 2004
Posts: 340
Likes: 8
From: Rock Hill, SC
I bet that is hell to make a turn from a stop in the snow.
