what gears do I have?

[65fj40]

ive been looking around and cant find a thread on how to find out what gears i have. 79mini axles. are they stamped?

 

[2ndGenToyotaFan]

This should do it....

http://www.4crawler.com/4x4/4R_TechInfo.shtml#Differentials

 

[BudKing]

If they are stock 4.37

 

[65fj40]

they are stock axles

 

[RHON]

i'm also trying to detemin what gear size my difs. have, I pulled the front driveshaft yesterday and found that they have a red paint code on them , yey there is no red code on the chart , can anyone tell me off hand what ratio my '81 short bed has ?

 

[BudKing]

81 stock should be 3.90

 

[RHON]

Thanks for the input-yes they are stock gears for now.

 

[tntoyota]

This should do it....

http://www.4crawler.com/4x4/4R_TechInfo.shtml#Differentials

Are 4:88's the same as 4:87's?


If so I got rid of a truck I shouldent have

 

[fourwd1]

Are 4:88's the same as 4:87's?

It's actually 4.875:1, so yes, they're the same.

Some people round up, others round down.


Just like the 79-80 trucks had 4.375:1 gears. Some say 4.37, some say 4.38, both are right.

 

[tntoyota]

Thanks,

Rip my T-100 SR5, toyota wanted $900 for the RING & PINION ONLY!

When my T's rear went, and thought my V6 mini would fit it

 

[scottiereeder]

This may help you out... If you can decipher it...

Toyota Differential Code Decoder - Vehicles with JTxxxxxx... VINs
First Position - Diameter of ring gear
Positions 2 & 3 - Gear Ratio Final Position - number of pinions in the carrier
A = 138mm 01 = 3.300 25 = 4.556
31" tire option 49 = 3.729 2 = 2 Pinions
Common in 4 cylinder models, but has been used in some V6 models
B = 145mm (NOT in trucks or 4Runner) 02 = 3.360 26 = 5.571 50 = 3.400 3 = 2 Pinions (LSD)
(I've not ever seen this code in a pickup/4Runner)
C = 6.25" 03 = 3.545 27 = 3.364 51 = 3.736 4 = 4 Pinions
Common in V6 and Turbo models
D = 6.662" 04 = 3.556 28 = 4.300
AT, 225/75 52 = 3.722 5 = 4 Pinions (LSD)
(I've not ever seen this code in a pickup/4Runner)
E = 7.1" 05 = 3.700 29 = 4.100
Very common 53 = 3.250
F = 7.5" 06 = 3.889 30 = 3.727 54 = 3.941
G = 8.0"
All 4x4 4Runners and Pickups 07 = 3.900
4x2 4R V6 AT also '81 4x4s 31 = 3.909 55 = 3.333
H = 9.0" 08 = 4.111 32 = 6.591 or 4.807 56 = 2.821
J = 9.25" 09 = 4.222 33 = 7.503 or 5.583 57 = 4.058
K = 9.5" 10 = 4.375
'80 4x4 34 = 6.781 or 4.786 58 = 3.238
L = 10.5" 11 = 4.444 35 = 7.636 or 5.600 59 = 3.234
M = 12.5" 12 = 4.625 36 = 4.778 60 = 3.519
N = 13.5" 13 = 4.790 37 = 3.583 61 = 2.724
P = 14.0" 14 = 4.875
31", AT 22RE 38 = 3.417 62 = 2.892
Q = 12.0" 15 = 5.125 39 = 3.154 63 = 2.655
R = 162mm 16 = 5.286 40 = 5.375 64 = 4.312
S = 6.38" 17 = 5.600 41 = 3.308 65 = 3.837
T = 6.7" 18 = 5.714 42 = 6.500 66 = 3.071
U = 6.0" 19 = 5.833 43 = 3.550 67 = 3.526
V = 10.6" 20 = 6.167 44 = 3.214 68 = 3.095
W = 15.5" 21 = 6.667 45 = 3.533 69 = 4.176
X = 142mm 22 = 6.780 46 = 2.929 70 = 5.857
Y = 158mm 23 = 6.833 47 = 3.944 71 = 2.962
Z = 202mm 24 = 7.640 48 = 3.356 72 = 3.949
73 =4.285

 

[StretchASU]

If you hate reading stuff and like wrenching...pull the driveshaft off the pinion flange and look at what color the pinion nut is painted...Green = 4.37 which is probably what is in your truck if its like my 80.

 

[RHON]

So with all this gear talk and wisdom being discussed here, can anyone recomend a good place ( preferably online ) that I could purchase a couple of ring and pinion sets along with the necessary install kits?,,, and is this something the average guy can tackel himself ? -I'm not a rocket scientist nor a caveman- but something in between with some mechanical skills.

 

[fourwd1]

Randy's is good (ring-pinion.com I think) .
Installing a R&P takes experience and special tools, considering you can trash a lot of $ worth of parts if not done right, it's best left to the pros.

 

[tntoyota]

So with all this gear talk and wisdom being discussed here, can anyone recomend a good place ( preferably online ) that I could purchase a couple of ring and pinion sets along with the necessary install kits?,,, and is this something the average guy can tackel himself ? -I'm not a rocket scientist nor a caveman- but something in between with some mechanical skills.

I have welding books and welding DVD's





don't have a welder.....................


My point? Do some intel get the FAX, its not ez shop press is $200 at HF, definitely multi looks simple but mucho complicated.

BTW, 4WIW, I have read countless mag's and other sources and 2MK I think they ALL imply you can "set up" the gears without a pinion depth tool or gauge.

This has always been a quandary for me, and if I had the money Summit has one, costs more money than initially thought of but 2MK you will set up the diff THE FIRST TIME right and not have to re shim the pinion if incorrect. And it is reusable, win win to me

This is my opinion, 2MK and.........AND the artical I read in P4WOR specifically for IFS Toyota in the pictures, the tools they bought from Randy's R&P where the same one's you get at Harbor Freight

 

[tntoyota]

Randy's is good (ring-pinion.com I think) .
Installing a R&P takes experience and special tools, considering you can trash a lot of $ worth of parts if not done right, it's best left to the pros.

http://www.ringpinion.com/Default.aspx

 

[2ndGenToyotaFan]

Here's all the reading you can handle...

http://gearinstalls.com/index.htm

 

[RHON]

Thnks for the great links, yah , maybe I should yank out the third members and take them to someone, looks like I could probably do this but it's a roll of the dice with what would be a disaster if not done rite.

 

[RHON]

I have welding books and welding DVD's





don't have a welder.....................


My point? Do some intel get the FAX, its not ez shop press is $200 at HF, definitely multi looks simple but mucho complicated.

( don't need the welding books or dvd's - do have a welder though), thanks again.