is it possible to have both tires spin by having 2.73gears at all???

 

having both tires spin has nothing to do with the gears, it has to do with the whole differential itself, whether its a limited slip or an open diff. open diff will give you those one wheel peels, while the limited slip will give you a burnout with both wheels spinning if its not too worn out. all this plus take into account whether your engine is strong enough to spin both tires.

 

ah ok cool i always dropped it to 1st to do a burnout never kept it in OD maybe thats y but if i take off left the left will spin with the right but if i turn right just the right will spin. thanks for the reply though

 

yup thats how the open rear works, you can spin the tires but you have to put alot into it and in the end you come out with 1 bald tire lol

 

but if i keep it in od with this new 350(when its ready to drop in) it should be able to spin both tires then right?? thanks

 

The engine has nothing to do with having both wheels spin what so ever, its all in the carrier in the rear end. You can have 1000hp and you could not spin both tires with an open diff...

 

It also has nothing to do with the transmission or the gear that you put the transmission into.

 

show me a car that can break the tires loose in fifth from a dead stop.

The tires spinning has to do with the rear differential,(not perfect explanation but this should help) open carriers are designed to transfer the power to the wheel with traction, where as a LSD is made to evenly transfer the power to both wheels, which is why they both break loose instead of the one wheel fire you have going on now

 

Well he said he had an automatic transmission. So it doesn't matter if the shifter is put in 1st 2nd Drive or OD. If you are at a dead stop it's always going to be in 1st gear regardless of whether the stick is in 2nd Drive or OD.

With a manual transmission that's another story but that's not what he has.

 

yeah but if i sit there in OD it will shift from 1 to 2 wouldnt it?? and when it does then they both should start spining becaues iv seen vids of both tires spining on a camaro with a 700r4 (stock) right???

 

Hold the break, Hold the gas you can possibly spin both tires but when you let off the break your gonna let loose with the old one wheel smoke bomb. And this CAN but will not ALWAYS (Most likely wont)happen
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With an open diff that is

 

i can spin both tires in first and second holding on the brakes..... can also lay rubber going into 2nd and 3rd with a 700r4 and a mildly moddified 305TBI, before i had the LSD it did it with one tire, the only way you may bet both to burn with an open diff, (i dont care what gears or motor you have) is with a line lock.

in other words get a LSD and while you are at it get some better gears to

and yea you can see a stock 700r4 do twin tire fire, if it has a LSD from the factory

 

lsd is what again???

 

limited slip or as GM calls it Posi~Trac

 

yeah i have limited slip so should i keep mine in od and try it because i havent tryed that yet???

 

LSD= Limited Slip Differential.And no....you dont need a line lock to spin both rear wheel with an open diff. It can happen though 9 1/2 times out of ten it will not spin both tires

 

Limited Slip Differential

 

Ya'll type too fast...LOL
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Only car I ever drove I couldnt make spin was my sisters datsun B 210..... Rev it to 6 grand, drop the clutch and blaaaaaaaaaaaaaaaaaa. Not even a squeak

 

lol yeah im just really wanting to spin both of my tires

 

You want to do a burn out or you want to spin from a dead stop while taking off?

 

spin from a dead stop and burnout which ever man

 

Burn out should be eazy. Hold left foot on break......put right foot to floor
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Off the line spin your gonna need gears

 

ok man thanks

 

spin off the line with 2.73.............mash it to the floor trust me it will burn out with a 305 TBI, you just got to free up to HP in it.....i could never hook up with my stock suspenion and 2.73's open

 

You will need a limted slip (posi track) if you want to do that.

You stated that you already have "LSD", I doubt that you have it, being a 91 305 TBI with a 700R4, your car came with a 2.73 open rear. And the fact that you stated you only do one wheeled peels.

 

My 350 with 2.73 gears, open diff, and some very bald tires will spin till about 20 (is that good or bad?). And it'll do this if i power brake it (ignore the hazard lights) and i was revving it to see how it sounded on camera

 

thank you for the insight on that one kris lol

blkfirebird; if you want to check, i suggest you pop the diff open and take a look and you can change that fluid that probably hasnt been touched/checked in years

 

hey how much does an LSD usually go for? we'll say a used one out of parts car camaro or something.

 

depends on how you wanna go about it, there are the factory ones from our thirdgens, which have a few differences over the years but i cant remember, ive seen em from $50 to $200, just gotta look around

OR there is the Zexel torsen out of the 4th gens, drops right in , just need to be sure to have 28 spline axels. Worth it in the long run IMO because the 28 spline axles need to hold up to the brute force

 

thanks master_disaster.

 

ok ill do that but what would that do for me though?? ill do it today and should i put that Lucas rear end oil in it??? thanks

 

one, inspect the spider gears for chips/cracks and 2 take a picture of it, post it up and then we can tell you if its LSD or not.

 

im running 80/90 lucas gear oil, with an LSD additive, if you get a LSD make sure you put LSD additive in your fluid

 

ok ill do that.

 

just a FYI, the carrier in a open diff, when you look through the "window" on it you will just see spider gears and a shaft going through the center where the axles meet...... a LSD will have springs in it and clutchs that you can see.

 

I usually sell a limited slip for about $100...............need one?

 

http://rides.webshots.com/album/55410292AnMJrE
Look through these and see if yours looks like one of them.

 

ok so when i do this with the cover when i put it back on i need a new gasket? also when i fill it back up i fill it to when i can feel it when i stick my finger in the hole?

 

Wow man, yeah you need a new gasket, and yeah, fill it so it's even with the bottom of the fill hole.

You may want to get a service manual to help you with some of the basic stuff.

 

These cars can do very good burnouts.
The reason your not getting both tires to spin is either you have an open diff, in which case they can both spin, but not really likely. Or your LSD is worn out.
If you think you have a LSD look at the RPO codes. The gears will be a GU then a number if I remeber correctly. That is the gear ratio that you already know. What you are looking for is G80. If it has that you have a LSD, if not you have an open diff.
Little something to see what it can do. This is my car with a stock 305, TBI, 3.08's, and the factory LSD. Keep in mind this was at a track not on a street. It was also 2nd gear, at about 6,000 RPM.