ford 9in
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Junior User
Joined: Nov 2001
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ford 9in
I have the basic 9in setup with 3.00 gears in my car. I want to beef it up and eliminate the one-wheel-burnouts. So whats the difference between mini-spools, spools, and the TracLock?
Thanks,
Andrew
Thanks,
Andrew
Senior User
Joined: Feb 2002
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From: purgitory
ford 9in
So whats the difference between mini-spools, spools, and the TracLock?
spool=it locks both axles so they both turn at the same rpm
mini-spool=same but smaller and lightweight
tracklock=is ford's name for the limited-slip rearend(like chevy w/ positraction or posi for short)
spool=it locks both axles so they both turn at the same rpm
mini-spool=same but smaller and lightweight
tracklock=is ford's name for the limited-slip rearend(like chevy w/ positraction or posi for short)
Laughing Gas
Joined: Jan 2003
Posts: 1,082
Likes: 40
From: Melbourne, FL
ford 9in
The spool replaces your existing ring gear carrier. A mini-spool replaces the spider gears in your existing ring gear carrier. They both perform the same function of making the axles turn at the same rate no matter what (no differential). A spool is stronger than a mini-spool because the spool is one solid piece. The TracLok will allow the wheels to differentiate around corners but hook-up when you need it. If you use the car for a lot of daily driving, I would recommend the TracLok. Even though the TracLok is more expensive, you'll save money on the prematurely worn out tires and steering components that a spool will cause with a lot of pavement driving.
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
ford 9in
Technically, the TracLock is a limited slip which means its clutch packs are always dragging to try to keep the axles spinning the same, but they're also always slipping so they wear constantly and don't do much after several thousand miles of driving. There are quite a few other brands of L/S diff and many are available for the 9". Eaton makes the TracLock for Ford, but the Auburn Gear L/S is considered durable.
The type that engages automatically ONLY when you need it is a "torque biasing" diff, like the Zexel TorSen (torque sensing) and the Tractech (Detroit) TrueTrac. They also engage smoothly and proportionally (not off/on) so they behave VERY predictably on ice, unlike all others.
The type that engages automatically ONLY when you need it is a "torque biasing" diff, like the Zexel TorSen (torque sensing) and the Tractech (Detroit) TrueTrac. They also engage smoothly and proportionally (not off/on) so they behave VERY predictably on ice, unlike all others.
