How do I tell the difference in 3.55 gears, 3.73 gears and 3.27 gears?

[gruvee87vertgt]

Any input is appreciated. thanx

 

[bynummustang]

Jack the rear of the car up, stands under the axle tubes. Get a fishing weight and some string. Tie the string onto your Driveshaft, close to the Diff. and tie it tight. Put the weight on the end of the string to make sure its pointing straight down (just a plumb line *if you do carpentry or masonry) and have someone turn the tire forward ONE complete revolution. Look at the drive shaft, and count how many times it went around:

How many times the string went around is the rear gear you have.
little less than 3= 2.73
Little over 3 = 3.27
About 3.5 = 3.55
Little less than 4 (3.73) =3.73

 

[bynummustang]

In terms of SOTP or acceleration, you can't, just get in a car with each, and do the same test.

 

[gruvee87vertgt]

dam it.....I forgot to mention that the gears are out of the diff and sitting on the garage floor....Can we try this again? thanx

 

[fiveofanatic]

How do I tell the difference in 3.55 gears, 3.73 gears and 3.27 gears?

Two are for pussies.

 

[Kumm3]

id like to know the same thing

 

[90]

Two are for pussies.

i almost pist myself....~! now thats some funny stuff!

 

[90]

How many times the string went around is the rear gear you have.
little less than 3= 2.73
Little over 3 = 3.27
About 3.5 = 3.55
Little less than 4 (3.73) =3.73

man thats pritty sweet i never new that~!!! thanks good looken out!!

 

[caseywan]

I've been told you just count the teeth on each of the gears and divide one by the other.

 

[brin0357]

I've been told you just count the teeth on each of the gears and divide one by the other.

Thats why its a gear ratio. For sake of arguement 35 on the ring and 10 on the pinion would be 3.50

 

[Henceforward]

Two are for pussies.

Don't fear tha gear!

 

[bynummustang]

My next idea was count teeth and divide.

 

[fiveofanatic]

If you're going to pop the diff cover off, the ratio will be stamped on the ring gear. Just turn it until you see it.

 

[bynummustang]

He said the gears were on his floor, oh mighty ADMIN

 

[Strype]

Two are for pussies.

:Word:

 

[bynummustang]

Ah, what are you laughing at, you but lipped yank?

 

[Strype]

Ah, what are you laughing at, you but lipped yank?

Who you callin Yank Johnny Apple Seed!!!

 

[fiveofanatic]

He said the gears were on his floor, oh mighty ADMIN

Well then. If he can't decipher what "3.73" stamped into a ring gear means, there's not much I can do.

Actually, in that case, I'm fairly impressed he was able to ask about it online.

 

[Kumm3]

Well then. If he can't decipher what "3.73" stamped into a ring gear means, there's not much I can do.

Actually, in that case, I'm fairly impressed he was able to ask about it online.

not all gears are stamped. i have three sets with no stampings other than part numbers.

 

[red95gtconvert]

All three of my Ford gearsets have it stamped on the pinion gear, two of them were factory installed.