i need the colors and tooth count for the speedo gears, i need them for a 700r4, 89 9bolt 3.27 rear gear, ive tried searching but i couldent find it anywhere and im getting tired of reading....thanks in advance

 

P/N - Teeth - Color
9774413 - 34 - Lt Green
9780628 - 35 - Orange
1359270 - 36 - White
1359271 - 37 - Red
1359272 - 38 - Blue
1359273 - 39 - Brown
1362048 - 40 - Black
1362195 - 41 - Yellow
1362049 - 42 - Green
1362196 - 43 - Purple
9780470 - 44 - Dk Gray
9775187 - 45 - Lt Blue

 

what size tires do ya have, tell me that and i can tell ya what ya need

 

www.700r4.com

Click on Useful Tools, then Speedometer Calculator, enter your specs. You can buy a swap kit directly from them, or do some more searching and find the GM parts numbers for the specific gears it tell you. If, for example, it returns 15 and 44, search for

44T VSS Gear

Or, you could go here and find all the GM #'s ya need

https://www.thirdgen.org/techbb2/sho...t=44T+VSS+Gear

 

245/50/16's

 

Do you know how many teeth your drive gear is? if not then replace both. Here are the options:

Choice 1) 15T drive gear & 41T Driven gear
Choice 2) 16T drive gear & 44T Driven gear
Choice 3) 17T drive gear & 46T Driven gear

Since GM doesnt have a 46T driven you can use either of the top two choices. Also the colors are above.

 

How can I figure what combo I need to make mine right ? Or if someone knows allready that would be great!
Im sure theres been more than one 350 turbo swaped into a 3rd gen.
It came with a 700r4 so the gague is for that, but now it has a th-350, and the tires are 245/50/16s It runs faser than I'm really going. I only have a 85 MPH speedo so it's easy to peg it

 

just wanted to thank you guys for your help:hail:

 

well i dunno about those pt numbers on that list you got up there for the driven gear...but i got another list that is off from GM themselves...and this is using the analog speedo gauge..
plus i verifed that one of the part number is correct because i had to buy that driven gear awhile ago.....( i got a 87 T/A with a 2.73, GM 10 bolt rear end gear/ and TH-700 R4 tranny)...
here's the "other" gm list...
pt #
25513042 35 teeth/color: orange
25513043 36 teeth/color: white
25513044 37 teeth/color: Red
25513045 38 teeth/color: blue
25513946 39 teeth/color: Brown
25513047 40 teeth/color: black
25513048 41 teeth/color: Yellow
25513049 42 teeth/color: Green
25513050 43 teeth/color: purple
25513051 44 teeth/color: Dk Bray
25513052 45 teeth/color: Lt. Blue.....this is the one i have...

 

i have a 5.0 90 rs and am changing to the 3.27's soon
i will be running stock size 245/50/16's
what gears for my setup?

 

i did the same swap as your gonna do, 2.73's to 3.27 (10bolt to 9bolt) i used the 41t gear driven (yellow) and 15t drive gear (gray) i just recieved them from 700r4.com im gonna install them this weekend, but the rear is a nice difference over the peglegger, but my brakes look kinda funny now that my rear disks are bigger than my front but overall its a worthwhile swap all around good luck

 

yep i'm doing the exact same conversion except i think the rear i'm picking up is drum which would be ok too. either way i gotta get my parts list started.

 

i had to get a new endlink kit for the sway bar cause both bolts snapped when i was taking them off, i also did my u-joints while i was at it, i also suggest a tall can of pb blaster penetrating fluid, cause all the bolts were never touched from the factory, so they were bretty rusty