Short Box or Long Box

[SamF]

I have a Vee transaxil that is removed from the car, it has the swing arms tubes and axils removed.

Is there any way with the trans in this condition to tell if it is a long or short box.

Sam

[problemchild]

Remove the side cover and count teeth. 5 mins off -10 mins on. Quicker than counting revolutions, doing calculations, and having to think.

[mmessenger1]

I do not know how to check with transaxle out,but maybe this will help
Have heard that
Longbox put in 4th gear
1 full turn of wheel = 1 & 300 degrees<approx. 1/4" short of 2 full turns
Shortbox put in 4th gear
1 full turn of wheel = 1 & 345 degrees<approx 1/8" short of 2 full turns.
Back in May 2001 Jim at sracing said that
shortbox
3.8:1 first gear
2.06:2nd
1.22:3rd
0.89:4th

Longbox
0.82:1 4th gear

Also 2 types of 3rdgears, They can be
1.00:1 or 1.26 to 1

mike

[mmessenger1]

Short 4.375

Long 4.125

[Diamond Level Motorsports]

Actually, there are three 3rd gears legal to use:

1. 1.22
2. 1.26
3. 1.32

[SamF]

Remove the side cover and count teeth. 5 mins off -10 mins on. Quicker than counting revolutions, doing calculations, and having to think.

Greg,

Thanks! would you know the number of teeth I am looking for for a long box?

Sam

[Dietmar]

Sam:

With the trans on the floor- turn it upside down, remove the drain plug, you wil see the ring gear teeth inside, mark one tooth with chalk or a paint marker, rotate the ring gear and count the teeth.

35 is a short box, 33 is a long box

Dietmar
www.quixoteracing.com

[problemchild]

Don't recall, but just divide the pinion number into the ring gear number. I think the SB is 8:35 and LB is 8:33.

Edited while Josh was replying.

[starkejt]

Short 4.375

Long 4.125

I know nothing about FVs, but if the above is correct, arithmetic-wise it pretty much has to be 8:35 and 8:33.

[budawe]

Everyone is correct unless you are looking at a split case trans. They are readily id'd by the fact the cases bolted together. If it is, chances are you do not want to use it in a vee.

[mmessenger1]

Don't recall, but just divide the pinion number into the ring gear number. I think the SB is 8:35 and LB is 8:33.

Edited while Josh was replying.

shortBox 8.35 <4.375>

longbox 8.33 <4.25>

[starkejt]

longbox 8.33 <4.25>

33 / 8 = 4.125

[mmessenger1]

33 / 8 = 4.125

correct!!!!!!!!

mike

[SamF]

Thanks all, I now have a plan to find out what I have

[Bob VanDyke]

Before doing all thoses things, check to see if the builder labelled it. Look near where it bolts to the engine for something like "VSR LONG 1.22" or "LRE 1.26 SHORT". Might save you some time.

[SamF]

Before doing all thoses things, check to see if the builder labelled it. Look near where it bolts to the engine for something like "VSR LONG 1.22" or "LRE 1.26 SHORT". Might save you some time.

Thanks, The box came from the west coast and unfortunately there are no stampings on it.