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Old 05-12-2010, 10:33 AM   #1
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Default gm engine vin codes

for all of you going with the truck based ls engines, Look out, i just found out that my supposed 5.3 was a 4.8 so i found this, hope no one else gets ripped off.
Its the 8th number in the VIN

Engine codes for light trucks

VIN Size Type Fuel
1 6.6 L V8 Diesel
2 6.6 L V8 Diesel
B 5.3 L V8 RPO-L33 Vortec 5.3L 310 Alum Blk HO
D 6.6L V8 Diesel
G 8.1L V8 (Vortec 8100)
J 6.2 L V8 Diesel, Non-Turbo
L 2.5 L L4
M 5.0 L V8
N 6.0 L V8 (GENIII LQ9)
P 5.3 L V8
K 5.7 L V8 TBI
R 5.7 L V8 Vortec
S 4.2 L L6
T 5.3 L V8 (GENIII LM7)
U 6.0 L V8 (GENIII LQ4)
V 4.8 L V8
W 4.3 L V6 CPI
X 4.3 L V6
Z 4.3 L V6 EFI
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Old 07-07-2010, 04:56 PM   #2
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I needed this thanks!
2003 Silverado SS [Heads/cam]
1950 Plymouth Coupe [Ls1 chopped/bagged
1933 Ford Roadster [404ci lq9]
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Old 07-07-2010, 06:02 PM   #3
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You should also check the Casting in the rear of the block.. they usually will show what size the engine is...

But good researching, good info.

71' Chevelle, 99 LS1/Viper T56,Full Hotchkis TVS,Custom Cowl Induction CAI
84' Z-28 350/T5
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43l, 53l, 8100, code, codes, decode, engine, gm, ls, lsx, serial, tag, truck, v6, vin

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