LSD in V6?

[tkoforpresident]

Re: LSD in V6?

smoke quit being a douchebag and talking down other people.

I'd like to run your car once to watch you lose.

[96nastybird]

Re: LSD in V6?

haha I think this thread is funny. I was just looking for where the number code for the y87 package is in the cars to see if my friends camaro has it but i found this entertaining thread and now I'm gonna add my opinion...
who cares? the v8s are in a totally different class than us and why are v6 firebirds always trying to compete with Trans Ams? they are like the same freaking car but better. Our cars a just made to look good not to compete with the same car with a v8 cuz that just doesn't make sense

[Richardcoelho]

Re: LSD in V6?

simple, kack the rear of the car up and spin one wheel by hand the other wheel should spin the same direction if it spins opposite it's not LSD

[flamingchicken]

Re: LSD in V6?

simple, kack the rear of the car up and spin one wheel by hand the other wheel should spin the same direction if it spins opposite it's not LSD

lsd is not the same as posi-traction. so the wheels will still spin opposite ways if you jack it up and spin em.

a posi-trac has torque to both wheels all the time. a limited slip becomes a posi-trac when get in a place where your wheels are going to spin. with and open rearend when you get in mud or ice your RR wheel will start to spin while LR does nothing. with posi-trac they both will spin. with LS, after yourRR starts to spin, the LR will do the same

I have limited slip and the wheels spin opposite, but when i do a burnout at the strip, i leave two marks, all day long.

[96nastybird]

Re: LSD in V6?

I have limited slip and the wheels spin opposite, but when i do a burnout at the strip, i leave two marks, all day long.

Huh? then wft is posi traction. I thought people just used that to refer to an lsd putting even power to the wheels whether it be a 1 series 2 series or viscus
lsd. I thought they were all "posi traction."

I had the back end jacked up when I did the 98+ disc conversion and spun each wheel but didn't look to see what the other one was doing. Doesn't make sense but I take your word for it

[EarlR]

Re: LSD in V6?

Actually...posi-traction or posi-trac is just the name Chevrolet decided to give its version of the LSD, just as Ford had the traction-lok, and I think Dodge (or maybe AMC) had the trac-lok. They are all versions of a LSD. Some are clutch-type (e.g. Auburn), some are geared (e.g. Torsen), but they are all still limited-slip. A differential that has 100% torque to both wheels all the time is either a locked diff (spool) or a locking diff (e.g. Detriot Locker).

[flamingchicken]

Re: LSD in V6?

Actually...posi-traction or posi-trac is just the name Chevrolet decided to give its version of the LSD, just as Ford had the traction-lok, and I think Dodge (or maybe AMC) had the trac-lok. They are all versions of a LSD. Some are clutch-type (e.g. Auburn), some are geared (e.g. Torsen), but they are all still limited-slip. A differential that has 100% torque to both wheels all the time is either a locked diff (spool) or a locking diff (e.g. Detriot Locker).

yeah, i think pontiac called it safe-t-trac or something.

[Richardcoelho]

Re: LSD in V6?

a posi-trac has torque to both wheels all the time. a limited slip becomes a posi-trac when get in a place where your wheels are going to spin. with and open rearend when you get in mud or ice your RR wheel will start to spin while LR does nothing. with posi-trac they both will spin. with LS, after yourRR starts to spin, the LR will do the sameI have limited slip and the wheels spin opposite, but when i do a burnout at the strip, i leave two marks, all day long.

first of all posi trac does not allow ANY slip between both wheels and very few cars have TRUE POSI, however if you have the zexel torsen LSD it would spin like and open diff(your correct) but the auburn has pressure plates and springs so when it is off the floor they spin the same direction,the auburn is a way better LSD than zexel(no offence) but back to the question, the best way to tell form open to LSD id to do a burnout and see the tiremarks:slap:

[jimmysprinkle]

Re: LSD in V6?

On what evidence are you basing your opinion about the Auburn diffy? Just because it can spin both wheels while it's off the ground? What good would that do?

The Auburn uses clutches to allow for slip in turns. Everytime you take a turn you are slowly wearing them away. Eventually you must replace them.

The Torsen uses gears to allow for slip. Not only are they nearly matainence free, they actually multiply the torque form one wheel and transfer it to the one with the least amount of traction.

Remember, there's a reason why GM switched from the Auburn to the Torsen. :rolleyes:

[EarlR]

Re: LSD in V6?

first of all posi trac does not allow ANY slip between both wheels and very few cars have TRUE POSI

Actually that's not 100% correct - the reason both wheels of a clutch-type diff turn when the wheels are in air is that there is some pressure on the clutches from the spring pack. It is still a limited-slip however, in that when the vehicle is not under acceleration (either coasting, or decelerating) the axles are able to turn at different speeds; the spring pressure alone is not enough to prevent the weight of the car from overcoming the clutch pressure. So technically the posi trac is locked under acceleration (until the clutches start to wear as Jimmy noted) but acts like an open diff when coasting or decelerating.

the auburn is a way better LSD than zexel

I think that depends on the application. For drag racing, and normal street use I would agree on that. The lockup is more complete, and in the case of low-traction conditions it won't spin just one wheel. But, on a road course, or even an oval track where you will be out there for 20-30 minutes at a time, I'll take the gear-type most of the time. Less heat, lower maintenance, no special additives. JMHO of course.