What axels do I have

[jbristo67]

I have a 91 k5 blazer and I'm looking for gears. What Are my front and rear axels. Are they Danas I honestly have no idea where to look. If they are Dana's which ones are they.
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[mopar346]

Post pictures of the housings and more importantly the covers and we can tell you. K5 is a half ton and very doubtful it has Danas. More than likely 10 bolts and possibly a 12 bolt in the rear not sure when they stopped using them.

[Duster]

Won't be a Dana if origional. It will be a 10 bolt front and rear 8.5 ring gear. If origional. Go to summit and just plug in your truck info.
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[jbristo67]

So will it use the same ring gear front and rear
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[mopar346]

Probably not, post pictures or the G codes off of the glove box label and we can help you. Without the correct info we are just guessing, you don't want to by parts off of a guess.

[jbristo67]

Ok I will when I can get to it
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[andrewmp6]

Yeah we need good pictures of both axles to tell,Its a old truck who knows if its still got the stock axles or has someone swapped in different ones.

[jbristo67]

They're stock I'm the second owner
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[mopar346]

Looks like:

GAM which I don't find quickly
GQ1 standard axle ratio
GU4 rear axle 3:08 ratio

http://www.marshu.com/images-website...-car-codes.pdf

[57ToyBox]

I found this thread in a search, but my question didn't get answered.
If jbristo67 didn't have the RPO list in his glove box. Which is my issue.

How can the frt and rear axles be identified? and the ratio? without the RPO list

[LONGHAIR]

The axle type can be confirmed by simply posting a picture here. The cover is the best shot.
As far as ratio, the only way to be sure is to remove the cover. The gear's tooth-count will be stamped in the edge of the ring gear.

[obijuan]

if they are original axles they will be 30 spline ten bolt 8.5.


axle guide

[Duster]

Just go to Jaws gear, they will sell a gear set for your truck. If it original just plug your truck info in. They will both be 8.5 ring gears, front and rear are the same.

[andrewmp6]

What gear ratio you have http://www.how-to-build-hotrods.com/gear-ratio.html and how to id which rear ends you have http://coloradok5.com/axleguide.shtml

[hatzie]

Here's how it was orignally equipped.

VIN: 1GNEV18K4MF126942
Vehicle: BLAZER 1/2 TON
Year: 1991
Build Date: 1991-01-18

RPO Description

UM7 RADIO,AM/FM STEREO,ETR,INCLUDES CLOCK(USED WITH RS PACKAGE Y86) STEREO W/CLK(UM7) 1,538
UN9 RADIO SUPPRESSION EQUIPMENT RDO SUPPR(UN9) 9,483
UP8 RADIO,PROVISIONS FOR STEREO INSTRUMENTATION STEREO RDO PROVISIONS(UP8) 7,535
U73 ANTENNA,FIXED FIXED ANT(U73) 9,483
VE5 STRIP,FRONT AND REAR BUMPER IMPACT(BLACK) BLACK BPR IMP STR(VE5) 7,568
VG3 STRIP,FRONT BUMPER IMPACT FRT BPR IMP STR(VG3) 7,568
VG5 STRIP,REAR BUMPER IMPACT IMPACT STR(VG5) 7,568
VXS VEHICLE - COMPLETE 9,652
V22 GRILLE,RADIATOR(CHROME) CHROME GRL(V22) 8,473
V73 VEHICLE STATEMENT - US/CANADA US/CANADA VEHICLE STATEMENT(V73) 9,361
XES TIRE FRONT P235/75R15/N BL R/PE ST TL OOR TIRE(XES) 1,883
X88 CONVERSION CHEVROLET CHEVROLET(X88) 9,652
YD3 AXLE FRONT (BASE EQUIP) FOR SCHEDULING GVW PLATE FRT AXLE(YD3) 9,652
YD6 SPRING,REAR(BASE EQUIPMENT) RR SPRING(YD6) 9,652
YES TIRE REAR P235/75R15/N BL R/PE ST TL OOR TIRE(YES) 1,883
YE9 CONVENIENCE PKG COMFORT & DECOR LEVEL #3 COMFORT & CONVENIENCE PKG #3(YE9) 7,544
YG3 MOLDINGS DELUXE PACKAGE 7,568
YK6 IDENTIFICATION - (SEO) 1,236
ZES TIRE SPARE P235/75R15/N BL R/PE ST TL OOR SPARE TIRE(ZES) 1,883
ZQ3 DRIVER CONVENIENCE PACKAGE II(MERCHANDISING OPTION) DRVR CONVENIENCE PKG(ZQ3) 7,834
ZW9 BASE BODY OR CHASSIS BASE BODY/CHAS(ZW9) 9,652
ZY1 COLOR COMBINATION SOLID SOLID PAINT COMBO(ZY1) 5,550
1Q8 VEHICLE INSPECTION - GSA FORM 1398 843
1SC PACKAGE-OPTION 03 (1SC) 356
1SZ PACKAGE OPTION- (1SZ) 7,290
24D TRIM COMBINATION,CLOTH,DARK BLUE (24D) 1,957
24I INTERIOR TRIM,DARK BLUE (24I) 3,134
8E1 MINIMUM FUEL(3 GALLONS) MINIMUM FUEL(8E1) 922
98K COLOR COMBINATION,AUXILIARY TOP,BLACK SAPPHIRE (98K) 1,847
98U EXTERIOR COLOR,PRIMARY,BLACK SAPPHIRE METALLIC (98U) 1,251
AM7 SEAT,REAR FOLDING RR FLDG ST(AM7) 9,570
AQ9 SEAT,FRONT BUCKET,DRIVER,PASSENGER,RECLINING"ULTIMA"INCLUDES SEAT ADJ(USED WITH TRANS AN Y84) RECL FRT BKT ST(AQ9) 7,688
AXP VIN IDENT POSITION, MULTI- PURPOSE VEHICLE MULTI-PURPOSE VEHICLE VIN POSITION(AXP) 9,570
BB5 ORNAMENTATION,INTERIOR,HEADLINER(USED WITH VALUE LEADER WV9) INTR HDLNG(BB5) 7,544
BC3 ORNAMENTATION,INTERIOR,INSTRUMENT PANEL(DELUXE)(USED WITH EUROSPORT ZV8) DELUXE I/P(BC3) 7,544
B30 CARPET,FLOOR AND WHEELHOUSE FLR CPT(B30) 7,544
B32 COVERING,FLOOR MATS,FRONT AUXILIARY FRT AUX FLR MATS(B32) 7,544
B33 COVERING,FLOOR MATS,REAR AUXILIARY RR AUX FLR MATS(B33) 7,544
B85 ORNAMENTATION,EXTERIOR,BELT REVEAL MOLDING(USED WITH SPORT PACKAGE Z13) BELT RVL MLDG(B85) 7,568
B96 ORNAMENTATION,EXTERIOR,WHEEL OPENING MOLDING(USED WITH VALUE LEADER WV9) WHL OPG MLDG(B96) 7,568
CMD PLANT CODE FLINT, MI, GM T&B FLINT, MI PLANT CODE(CMD) 9,652
C5M GVW RATING(6100 LBS) 6100 GVWR(C5M) 9,372
C60 AIR CONDITIONER,FRONT,MANUAL CONTROLS A/C MAN CONT(C60) 9,225
D44 MIRROR,OUTSIDE,BELOW EYELINE(PAINTED)(9.5 X 6) O/S PAINTED MIR(D44) 2,094
F51 ABSORBER,HEAVY DUTY SHOCK HVY DUTY S/ABS(F51) 5,719
F60 SPRING,HEAVY DUTY,FRONT HVY DUTY FRT SPR(F60) 2,508
GAM VEHICLE - GOVERNMENT (G.S.A. SALES) 937
GQ1 AXLE,REAR,STANDARD RATIO(MERCHANDISING OPTION) STANDARD RATIO R/AXL(GQ1) 2,719
GU4 AXLE,REAR,3.08 RATIO 3.08R(GU4) 2,717
JB5 BRAKE SYSTEM,VACUUM POWER DISC,DRUM VACUUM PWR BRK SYS(JB5) 9,372
K34 CRUISE CONTROL,AUTOMATIC,ELECTRONIC CRCONT(K34) 7,834
K60 GENERATOR,100 AMPERE 100 AMP(K60) 9,238
L05 ENGINE,5.7L(5.7-7)GAS 8 CYLINDER 5.7-7(L05) 9,372
MD8 TRANSMISSION,AUTOMATIC 4-SPEED(THM700R4/4L60) 4-SPD A/TRANS(MD8) 9,256
MX0 TRANSMISSION,AUTOMATIC,OVERDRIVE(MERCHANDISING OPTION)(MD8) A/TRANS PROVISIONS(MX0) 9,256
NA5 EMISSION SYSTEM,FEDERAL REQUIREMENTS FEDERAL EMIS(NA5) 7,714
NK3 STEERING WHEEL,SPORT,SOFT RIM,SIMULATED LEATHER(USED WITH EUROSPORT B2T) SIMULATED LEATHER STRG WHL(NK3) 7,544
NY1 SHIELD,FUEL TANK F/TANK SHLD(NY1) 8,077
NY7 SHIELD,TRANSFER CASE TRFER CASE SHLD(NY7) 8,077
N33 STEERING COLUMN,TILT TYPE TILT STRG COL(N33) 7,834
N67 WHEEL,RALLY TYPE(VAR 2) RALLY WHL(N67) 1,499
P17 COVER,SPARE WHEEL AND TIRE(FULL SIZE SPARE) SPA TIRE CVR(P17) 7,544
R8T CONTROL - SALES ITEM NO. 69 5,849
SLL SOLD ORDERS SOLD ORDER(SLL) 2,706
TEJ DISCOUNT - DEALER ALLOWANCE, ADMINISTRATIVE 786
TFD SALES INCENTIVE - RETAIL AMENITIES - DELETE 2,459
TR9 LAMP GROUP,COURTESY LP GRP(TR9) 7,544
TT4 HEADLAMPS,TUNGSTEN QUARTZ HALOGEN HALOGEN HDLP(TT4)