Axle Ratio & Identification

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 1992 Oldsmobile Bravada, 1992 GMC Yukon, 1992 GMC Vandura Special, 1992 GMC Vandura, and 1992 GMC Value Van. However, it is still accessible from the selected car via links, so may be relevant.

ASTRO & SAFARI FRONT AXLE RATIO IDENTIFICATION

Application & Code		Ratio
7.625" Ring Gear
SKY, ZYD, ZYH		3.42:1
SKZ, ZYF		3.73:1

"C" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

XPN ⁽¹⁾, XRT ⁽¹⁾

3.08:1

UUS, XPF, XPJ ⁽¹⁾, XPM, XPP ⁽¹⁾

3.42:1

UUU, UUW ⁽¹⁾, XPG, XPK ⁽¹⁾

3.73:1

9.5" Ring Gear

RYA, RYF ⁽¹⁾, TXW, TXZ ⁽¹⁾

3.42:1

RYB, RYG ⁽¹⁾, TXX, TYA ⁽¹⁾

3.73:1

RYC, RYH ⁽¹⁾, SJA, TXY, TYB ⁽¹⁾, XRC

4.10:1

RYD, RYJ ⁽¹⁾

4.56:1

10.5" Ring Gear

RYK, RYN ⁽¹⁾

3.42:1

RYL, RYP ⁽¹⁾, SJM, SZX ⁽¹⁾

3.73:1

RYM, RYR ⁽¹⁾, SJN, SJR ⁽¹⁾, SJT, SJW ⁽¹⁾

4.10:1

RDP, SJP, SJS ⁽¹⁾, SJU, SJX ⁽¹⁾

4.56:1

11" Ring Gear (UXG)

4.63:1

⁽¹⁾	With positive traction, limited slip differential.

"C/K" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

10.5" Ring Gear

XUA, XUB ⁽¹⁾, RZJ, RZM⁽¹⁾, SFB

3.73:1

SFF ⁽¹⁾, SFJ, SFM, SJM, SZZ

3.73:1

RZK, RZN ⁽¹⁾, SFC, SFG ⁽¹⁾, SFK, SFN ⁽¹⁾, SFX

4.10:1

SFY ⁽¹⁾, SJW ⁽¹⁾, SZW ⁽¹⁾, SZS, XUC, XUD ⁽¹⁾

4.10:1

RLK ⁽¹⁾, RLZ, RZL, RZP ⁽¹⁾, SFD, SFH ⁽¹⁾

4.56:1

SFL, SFP ⁽¹⁾, SFZ, SGA ⁽¹⁾, XAF

4.56:1

⁽¹⁾	With positive traction, limited slip differential.

"G" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

RKF, RKG ⁽¹⁾

3.08:1

RKH, RKJ ⁽¹⁾

3.42:1

RKK, RKL ⁽¹⁾

3.73:1

9.5" Ring Gear

RKM, RKU

3.23:1

RKX, RKZ

3.73:1

RKY ⁽¹⁾, RLA

4.10:1

RKR, RKW ⁽¹⁾

4.56:1

10.5" Ring Gear

RMU, RMX ⁽¹⁾, SYK, SYP ⁽¹⁾

3.42:1

RMW, RMY ⁽¹⁾, RMA, RMC ⁽¹⁾, SYL, SYR ⁽¹⁾, XSX, XSZ ⁽¹⁾

3.73:1

RLW, RLZ ⁽¹⁾, RMB, RMD ⁽¹⁾, SYM, SYS ⁽¹⁾, XSY, XTA ⁽¹⁾

4.10:1

RMG, RMJ ⁽¹⁾, SYN, SYT ⁽¹⁾, XTB, XTC ⁽¹⁾

4.56:1

⁽¹⁾	With positive traction, limited slip differential.

"K" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

8.5" Ring Gear

UUX, UUY ⁽¹⁾, XRA ⁽¹⁾, XRD, XRF ⁽¹⁾, XPR, XPU ⁽¹⁾, XPY

3.42:1

UUZ, UWA⁽¹⁾, XPC, XPS, XPW⁽¹⁾, XPZ, XRB⁽¹⁾, XRH⁽¹⁾, XRG

3.73:1

XPX ⁽¹⁾, XPT

4.10:1

9.5" Ring Gear

TXN, TXS ⁽¹⁾, RYS, RYX ⁽¹⁾

3.42:1

TXP, TXT ⁽¹⁾, RYT, RYY ⁽¹⁾

3.73:1

TXR, TXU ⁽¹⁾, RYU, RYZ ⁽¹⁾

4.10:1

RYW, RZA ⁽¹⁾

4.56:1

10.5" Ring Gear

RZB, RZF ⁽¹⁾

3.42:1

RDM, RZC, RZG ⁽¹⁾, SZY

3.73:1

RZD, RZH ⁽¹⁾, RDN, RDR ⁽¹⁾, RLG, RLH ⁽¹⁾, XPT, XPX ⁽¹⁾

4.10:1

RDP, RDS ⁽¹⁾, RLJ

4.56:1

⁽¹⁾	With positive traction, limited slip differential.

"K" SERIES FRONT AXLE RATIO IDENTIFICATION ⁽¹⁾

Code

Ratio

ZHW, ZLS

3.42:1

ZBL, ZGT

3.73:1

⁽¹⁾	No other information is available from manufacturer.

"P" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

10.5" Ring Gear

SDK, SGB, SDN ⁽¹⁾, SDR, SDU ⁽¹⁾

3.73:1

SDL, SDS, SDX

4.10:1

SDM, SDP, SDT, SDW ⁽¹⁾, SDY, SFA ⁽¹⁾, TJT, TJX

4.56:1

TJY ⁽¹⁾

4.88:1

SDZ, UWU

5.13:1

11.0" Ring Gear

UWH

4.63:1

TFT, TFU, UWJ

5.13:1

⁽¹⁾	With positive traction, limited slip differential.

"S" & "T" SERIES REAR AXLE RATIO IDENTIFICATION

Application & Code

Ratio

7.5" Ring Gear

UBA, UBB ⁽¹⁾, XUF, XUG

3.73:1

UBC, UBD ⁽¹⁾, XUH, XUJ ⁽¹⁾

4.11:1

7.625" Ring Gear

TFY

2.73:1

TFZ ⁽¹⁾, TGA, TGB, UBJ, UBR, USZ, UTA, UWG

3.08:1

SZM, SZN ⁽¹⁾, TBS, TGF, TGH ⁽¹⁾, UBK, UBL ⁽¹⁾

3.42:1

UBT ⁽¹⁾, UTB, UTC ⁽¹⁾, UUL ⁽¹⁾, XAZ ⁽¹⁾

3.42:1

⁽¹⁾	With positive traction, limited slip differential.

"T" SERIES FRONT AXLE RATIO IDENTIFICATION ⁽¹⁾

Code

Ratio

ZAH

3.08:1

SKY, ZXC, ZYD, ZYH

3.42:1

SKZ, ZYF

3.73:1

⁽¹⁾	No other information is available from manufacturer.