97\' 4x4 rear into 98\' 2wd

[DMONOTJR]

hey guys, i was wondering what if any mods are required to fit a 97\' 4x4 disc brake posi rear under my 98\' 2wd truck. the rear isn\'t from a zr2, just an ordanary 4x4. i\'m not sure if the rear is 7.5 or 8.5, but the guy at the junkyard said that he thinks it has a locker but not sure though. he\'ll pull it out for me and is only going to cost me $350 total for the whole thing. i just hope it will work for my application easily???

[afghanimobilerawks]

different backspacing on the 4x4, the axle is a bit wider..... dont remember by how much though

[DMONOTJR]

well that\'s fine, i\'m going to be running the zr1 camaro wheels too. so with this rear, i won\'t need the 2\" spacers. i\'ll have to go pick it up saturday in gulfport,ms- that\'s about an 1 1/2 hour drive from my house, that\'s why i want to find out as much info about the rear as i can.

[Knanthrup]

The 4x4 rear will be about 4\" wider total, which is about 2\" per side. Other than that, everything should be the same (so long as it\'s not a ZR2)

[DMONOTJR]

so, as for the leaf spring mounts and the brake lines mostly , it\'s a \"bolt in\" job right?

[DMONOTJR]

also, the guy wasn\'t sure if it has a locker or not, but he thinks that it does. how do i tell if it does when i look at the rear. if it doesn\'t i don\'t see paying $350 for it would be that great of a deal??? or would that still be a fair price?

[ZR1BLAZER]

do it. even if its not a posi you still have the 2.2 under the hood so its not like you NEED the posi. and it has disc brakes so even a conversion kit for rear discs would cost you more then $350. so for a rear that has stock discs that will alow you to run the ZR1s in the rear with no spacer and have a decent gear (like most 4x4s) its well worth the $350.

[DMONOTJR]

is there a way to look and find out if it has a locker. it stiil is in the vehicle, but just want a second way to tell in case i can\'t read the rpo code sticker

[ZR1BLAZER]

jack up the rear and spin the tires forward. if the other tire doesnt spin or spins in the opposite direction then its an open diff. if they spin the same direction then its a posi. or take the rear cover off and take a look. if its full of mech parts or has 4 springs in the center its either a locker or limited slip posi. if you just see 4 gears 2 side 2 top then its and open diff.

[Knanthrup]

On 2007-03-22 22:00, ZR1BLAZER wrote:

jack up the rear and spin the tires forward. if the other tire doesnt spin or spins in the opposite direction then its an open diff. if they spin the same direction then its a posi. or take the rear cover off and take a look. if its full of mech parts or has 4 springs in the center its either a locker or limited slip posi. if you just see 4 gears 2 side 2 top then its and open diff.



Actually the problem with the s-10 posi is that it\'s a posi-loc so its not going to lock the rear axles together until there is a certain difference in speed between the two tires... i think its either 100 or 300 rpm. That\'s unless they changed to a clutch or cone style in the newer s-10\'s... which they could have but didnt think so.



in that case the only way to really know is to pop the diff case off and look inside or find the RPO option code sticker in the glove box that would say. unfortunately gm did not tag the diff for posi or gear information

[DMONOTJR]

does anyone have a link to a printable version of rpo codes? i just need the ones for the rear end (g??-h??).

[ZR1BLAZER]

F01 : FRAME, HEAVY DUTY

F16 : RATIO, TRANSAXLE FINAL DRIVE 2.53

F17 : RATIO, TRANSAXLE FINAL DRIVE 2.84

F19 : HEAVY DUTY CROSS SILL

F25 : RATIO, TRANSAXLE FINAL DRIVE 3.32

F29 : RATIO, TRANSAXLE FINAL DRIVE 2.82

F40 : SUSPENSION SYSTEM, FRT, RR, HD, VAR I

F41 : SUSPENSION SYSTEM, FRT, RR, FIRM RIDE, HANDLING

F42 : SUSPENSION SYSTEM, FRT, HD

F44 : CHASSIS, HEAVY DUTY

F45 : CHASSIS, CONTINUOUSLY VARIABLE REAL TIME CAMPING

F47 : AXLE FRONT, 2 73 RATIO

F51 : SHOCK ABSORBERS, FRT & RR, HD

F58 : STASILIZER SHAFT FR, HD

F59 : STABILIZER SHAFT FR,

F60 : SPRING FRONT, HEAVY DUTY

F61 : STABILIZER SHAFT,RR

F62 : RATIO TRANSAXLE FINAL DRIVE 2.39

F66 : SUSPENSION SYSTEM, FRT, AIR BAG & SEATS, HD

F67 : RATIO, TRANSAXLE FINAL DRIVE 3.19

F68 : RATIO, TRANSAXLE FINAL DRIVE 3.45

F72 : SPRING HEAVY DUTY, VAR 2

F73 : DRIVE, ALL WHEEL

F75 : RATIO, TRANSAXLE FINAL DRIVE 3.18

F77 : RATIO, TRANSAXLE FINAL DRIVE 3.73

F79 : RATIO, TRANSAXLE FINAL DRIVE 2.97

F93 : SPRING FRONT, 6000 LB, MULTILEAF

FE0 : SUSPENSION SYSTEM, FRT & RR, ACTIVE

FE1 : SUSPENSION SYSTEM, SOFT RIDE

FE2 : SUSPENSION SYSTEM, RIDE HANDLING

FE3 : SUSPENSION SYSTEM, SPORT

FE5 : SUSPENSION SYSTEM, RIDE l HANDLING ---- DELETE

FE7 : SUSPENSION SYSTEM, FRT & RR HD, VAR 3

FE8 : RADIAL TUNED SUSPENSION

FE9 : CERTIFICATION, EMISSION, FEDERAL

FF4 : ARM, LH, TORSION BAR SPRING ADJ (C)

FF5 : ARM, RH, TORSION BAR SPRING ADJ (D)

FF6 : ARM, LH, TORSION BAR SPRING ADJ (E)

FF7 : ARM, RH, TORSION BAR SPRING ADJ (F)

FG2 : SHOCK ABSORBERS, FRT & RR, FIRM RIDE

FG3 : SHOCK ABSORBERS, FRT & RR, GAS PRELOADED

FK2 : ARM, LH, TORSION BAR SPRING ADJ (A)

FK3 : ARM, RH, TORSION BAR SPRING ADJ (B)

FNT : FENDERS DELETION

FP0 : RATIO, TRANSAXLE FINAL DRIVE 2.55

FP1 : RATIO, TRANSAXLE FINAL DRIVE 2.72

FP2 : RATIO, TRANSAXLE FINAL DRIVE 3.58

FP3 : RATIO, TRANSAXLE FINAL DRIVE 2.73

FP5 : RATIO, TRANSAXLE FINAL DRIVE 2.95

FP6 : RATIO, TRANSAXLE FINAL DRIVE 3.54

FP7 : RATIO, TRANSAXLE FINAL DRIVE 3.73

FP8 : RATIO, TRANSAXLE FINAL DRIVE 3.54

FQ1 : AXLE FRONT, STD RATIO

FQ2 : RATIO, TRANSAXLE FINAL DRIVE 3.48

FQ6 : RATIO, TRANSAXLE FINAL DRIVE 4.12

FQ8 : RATIO, TRANSAXLE FINAL DRIVE 2.96

FQ9 : RATIO, TRANSAXLE FINAL DRIVE 3.21

FR1 : FRONT SPRING, LEFT SIDE

FR2 : FRONT SPRING, RIGHT SIDE

FS3 : SUSPENSION SYSTEM, I-BEAM CONSTRUCTION

FT2 : ARM, LH, TORSION BAR SPRING ADJ (FT2)

FT3 : ARM, RH, TORSION BAR SPRING ADJ (FT3)

FV0 : RATIO, TRANSAXLE FINAL DRIVE 3.67

FV1 : RATIO, TRANSAXLE FINAL DRIVE 3.72

FV3 : RATIO, TRANSAXLE FINAL DRIVE 3.11

FV4 : RATIO, TRANSAXLE FINAL DRIVE 3.71

FVM : AXLE FRONT, F050, 5000 LBS CAPACITY, HYD

FVO : RATIO, TRANSAXLE FINAL DRIVE 3.67

FW1 : MANUAL ELECTRIC CONTROL, RIDE AND HANDLING

FW2 : RATIO, TRANSAXLE FINAL DRIVE 3.06

FW3 : RATIO, TRANSAXLE FINAL DRIVE 4.02

FW4 : RATIO, TRANSAXLE FINAL DRIVE 3.89

FW5 : RATIO, TRANSAXLE FINAL DRIVE 4.10

FW6 : RATIO, TRANSAXLE FINAL DRIVE 3.42

FW7 : RATIO, TRANSAXLE FINAL DRIVE 3.83

FW8 : RATIO, TRANSAXLE FINAL DRIVE 4.28

FW9 : RATIO, TRANSAXLE FINAL DRIVE 3.43

FWI : PLANT CODE FORT WAYNE, IN, USA

FWS : RATIO, TRANSAXLE FINAL DRIVE 4.10

FWX : SPRING FRONT, 5OOO LBS CAPACITY

FX1 : RATIO, TRANSAXLE FINAL DRIVE 3.94

FX2 : RATIO, TRANSAXLE FINAL DRIVE 2.66

FX3 : RIDE AND HANDLING, AUTOMATIC ELECTRONIC

CONTROLLED AAA

FX4 : RATIO, TRANSAXLE FINAL DRIVE 3.35

FX8 : RATIO, TRANSAXLE FINAL DRIVE 3.61

FY1 : RATIO, TRANSAXLE FINAL DRIVE 2.36

FY3 : RATIO, TRANSAXLE FINAL DRIVE 3.79

FY5 : RATIO, TRANSAXLE FINAL DRIVE 3 52

G11 : RATIO, TRANSAXLE FINAL DRIVE 2.56

G31 : SPECIAL REAR SPRING

G32 : REAR SPRINGS

G33 : REAR SPRING, LEFT SIDE

G34 : REAR SPRING, RIGHT SIDE

G44 : AXLE REAR 3.07 RATIO

G50 : SPRING REAR, HEAVY DUTY, VAR 1

G51 : SPRING REAR, HEAVY DUTY, VAR 2

G52 : SPRING, RR, 15000 LBS

G5O : SPRING REAR, HEAVY DUTY, VAR 1

G60 : SPRING REAR, AUXILIARY

G66 : LEVEL CONTROL, MAN, AIR

G67 : LEVEL CONTROL, AUTO, AIR

G69 : LEVEL CONTROL, AUTO, AIR, HD

G72 : AXLE REAR, 2.14 RATIO

G74 : HEAVY DUTY SUSPENSION

G75 : AXLE REAR, 3.62 RATIO

G76 : POSITRACTION REAR

G80 : AXLE POSITRACTION, LIMITED SLIP

G81 : POSITRACTION REAR AXLE

G82 : AXLE REAR, 4.56 RATIO

G84 : AXLE REAR, 4.10 RATIO

G86 : AXLE, REAR, LIMITED-SLIP

G87 : RING GEAR, 8.50 INCH

G89 : RING GEAR, 7.50 INCH

G91 : SPECIAL HIGHWAY REAR AXLE RATIO 3.08

G92 : AXLE REAR RATIO, PERFORMANCE

G94 : AXLE REAR, 3.31 RATIO

G95 : AXLE REAR RATIO, ECONOMY

G96 : AXLE REAR, 3.55 RATIO

G97 : AXLE REAR, 2.73 RATIO

GH0 : AXLE REAR, 3.54 RATIO

GH2 : AXLE REAR, 2.29 RATIO

GH3 : AXLE REAR, 2.77 RATIO

GH4 : AXLE REAR, 2.92 RATIO

GK9 : AXLE REAR, 4.63 RATIO

GL3 : AXLE REAR, 6.17 RATIO

GM1 : AXLE REAR, 2.59 RATIO

GM3 : AXLE REAR, 3.45 RATIO

GM8 : AXLE REAR, 2.56 RATIO

GMC : PLANT CODE PONTIAC, MI, USA

GN9 : AXLE REAR, 4.11 RATIO

GQ1 : AXLE, STD RATIO

GS1 : AXLE REAR, 2.73 RATIO

GS3 : AXLE REAR, 3.73 RATIO

GS4 : AXLE REAR, 3.70 RATIO

GS5 : AXLE REAR, 4.11 RATIO

GS6 : AXLE REAR, 4.56 RATIO

GT1 : AXLE REAR, 2.56 RATIO

GT2 : AXLE REAR, 2.29 RATIO

GT4 : AXLE REAR, 3.73 RATIO (DUP WITH 5 X 1)

GT5 : AXLE REAR, 4.10 RATIO (DUP WITH GT8)

GT7 : AXLE REAR, 3.33 RATIO

GT8 : AXLE REAR, 4.10 RATIO (DUP WITH GT5)

GTY : AXLE, WIDE TRACK

GU1 : AXLE REAR, 2.41 RATIO

GU2 : AXLE REAR, 2.73 RATIO

GU4 : AXLE REAR, 3.08 RATIO

GU5 : AXLE REAR, 3.23 RATIO

GU6 : AXLE REAR, 3.42 RATIO

GV1 : AXLE REAR, 2.73 RATIO

GV2 : AXLE REAR, 5.83 RATIO

GV3 : AXLE REAR, 3.08 RATIO

GV4 : AXLE REAR, 3.36 RATIO

GV5 : AXLE REAR, 3.55 RATIO

GV7 : AXLE REAR, 4.11 RATIO

GV8 : AXLE REAR, 2.72 RATIO

GW2 : AXLE REAR, 2.56 RATIO

GW3 : AXLE REAR, 2.56 RATIO

GW4 : AXLE REAR, 3.31 RATIO

GW5 : AXLE REAR, 2.73 RATIO

GW6 : AXLE REAR, 3.27 RATIO

GW8 : AXLE REAR, 4.10 RATIO

GW9 : AXLE REAR, 2.93 RATIO (DUP WITH GU3)

GWL : SPRING, RR, 9000 LBS CAPACITY

GX1 : AXLE REAR, 3.70 RATIO

GX2 : AXLE REAR, 3.07 RATIO

GX3 : RATIO,TRANSAXLE FINAL DRIVE 3.33

GY2 : AXLE REAR, 3.31 RATIO

GYS : RATIO TRANSAXLE FINAL DRIVE 3.65

H01 : AXLE REAR, 3.07 RATIO

H04 : AXLE REAR, 4.11 RATIO, SINGLE SPEED

H05 : AXLE REAR, 3.73 RATIO

H12 : AXLE REAR, 21000 LBS, EATON 21065S, SINGLE SPEED

HA3 : AXLE REAR, 5.29 RATIO, SINGLE SPEED

HC4 : AXLE REAR, 4.56 RATIO

HC7 : AXLE REAR, 5.13 RATIO, 7500 LBS, SINGLE SPEED

HC8 : AXLE REAR, 3.21 RATIO, SINGLE SPEED, TRUCK

HE3 : AXLE REAR, 3.07 RATIO, 3500 LBS, SINGLE SPEED,

HF7 : AXLE REAR, 4.56 RATIO, 10000 LBS, DANA 70, SINGLE

HF8 : AXLE REAR, 4.88 RATIO

HK1 : AXLE REAR, 2.87 RATIO

HK9 : AXLE REAR, 5.86 RATIO 10000 LBS, SINGLE SPEED



and if you cant print them from here give me a call and i will email you a complete list.

[DMONOTJR]

well, i got the rear end yesturday. it\'s actually still under a 98\' blazer in gulfport ms.it has disc brakes and seems to be in great shape too! but i blew my tranny about 3 miles from the junkyard i was heading to. it sounded like i toke EVERY gear out the tranny, put them on a coat hanger, and drugged them down the interstate next to me. i was able to drive it only in second gear the rest of the way (lotsa noise) and i had to leave it out in gulfport (96 miles from my driveway to their\'s). thankfully my wife\'s friend came picked us up, i my buddy (who own\'s the junkyard) will tow my truck back to my house in a day or two.my wife and me were stranded out there for about 6 hrs though, but i could hear the races gouing on nearby, damn them boys are running strong!

[smoothdime]

the rear end will fit under your truck fine, but the zr1 wheels will still need a spacer. i have a zr2 s10 rearend in my truck with zr1 camaro wheels and it fits with no spacer so you will still need some kind of spacer. im not sure what mm offset i used but they were the 17x9.5 and they fit flush with the bed sides. had to use like a 1.75 inch spacer on the fronts but it still rubs a little lock to lock. hope that helps you. good luck. smooth.