4.3 engine I.D/Rear end codes

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astrozam
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4.3 engine I.D/Rear end codes

Post by astrozam »

Originally posted by WACK an ( A.S community member )
Info from Overland vans, engine I.D from 8th digit in VIN
also contains rpo codes for rear diff

http://www.overlandvans.com/datasheet~ns4.html
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blackcat1965
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Re: 4.3 engine I.D/Rear end codes

Post by blackcat1965 »

Thanks for that bit of information. I have been looking for the rear end data on and off now for some time. Everytime I need to get a new gasket for my rear diff cover I have to play 20 questions until I get the right one. I always write down the size, but by the time I need a new gasket, I have misplaced where I wrote it down.
1990 Astro CL "Shorty" 2WD
All Original (V8 & suspension upgrades in future)
251,000 miles and going strong
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Re: 4.3 engine I.D/Rear end codes

Post by doyoulikeithere »

They always give me 2 choices for GM 10 bolt diff gaskets.
The Astro style diff, (7.something inches) and the big 8.5 inch 10 bolt diff.
Gaskets?: Visually the smaller dif (for our vans) is kinda rectangular-ish compared to the 8.5 diff that is very circular.
clear as mud?

Heres a few more codes since that list didnt include a few.....
GQ1 : AXLE, STD RATIO
G80 : AXLE POSITRACTION, LIMITED SLIP
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
GT4 : AXLE REAR, 3.73 RATIO (DUP WITH 5 X 1)
GT5 : AXLE REAR, 4.10 RATIO (DUP WITH GT8)
GT8 : AXLE REAR, 4.10 RATIO (DUP WITH GT5)
LB1 : ENGINE, GAS, 6 CYL, 4.3L, 4BBL, V6, 90 DEG
LB4 : ENGINE, GAS, 6 CYL, 4.3L, TBI, V6, 90 DEG
L35 : ENGINE, GAS, 6 CYL, 4.3L, CPI, V6, 90 DEG
LU2 : ENGINE, GAS, 6 CYL, 4.3L, TBI V6, 90 DEG, HO
LU3 : ENGINE, GAS, 6 CYL, 4.3L, MFI, V6, 90 DEG
LT6 : ENGINE, DIESEL, 6 CYL, 4.3L, V6, LONGITUDINAL
LT7 : ENGINE, DIESEL, 6 CYL, 4.3L V6, TRANSVERSE
LT1 : ENGINE, GAS, 8 CYL, 5.7L, TPI, HO
LS6 : 454 CID V8 450HP (SPECIAL HIGH PERFORMANCE & 4 BARREL)
LS7 : 454 CID V8 (HEAVY DUTY & 4 BARREL)
L71 : 427 CU. IN. ENGINE – 435HP
MD8 : TRANSMISSION, AUTO 4 SPD, THM 700 R4
MH3 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 77MM, 3.50
M30 : TRANSMISSION, AUTO 4 SPD, HMD, 4L60E, ELECTRONIC
2021 Yamaha Tenere 700 - Blue.
2016 Yamaha XSR900 - Silver.
1990 Astro - AWD - Brown.
1987 Astro - With 5 Speed & 4wd - Silver & Blue.
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