WHICH 'LS' ENGINE DO I HAVE?

Chevrolet's GEN III and GEN IV 'LS' engines can be identified by their RPO code. You can determine the RPO code if you have the Vehicle Identification Number (VIN #) from the original/donor vehicle.

 

  1. Locate the 8th digit of the VIN.
  2. Check the tables below to identify your engine.

*Click on the RPO code below to see more details about that engine.*

GEN 3 / LS CAR ENGINES
8th Digit of VIN RPO Code Disp. Common Name
G LS1 5.7L LS1
S LS6 LS6

 

GEN 3 / VORTEC TRUCK ENGINES
8th Digit of VIN RPO Code Disp. Common Name
Iron Block
V LR4 4.8L Vortec 4800
T LM7 5.3L Vortec 5300
Z L59
U LQ4 6.0L Vortec 6000
N LQ9 Vortec HO 6000 or VortecMax
Aluminum Block
P LM4 5.3L Vortec 5300
B L33 Vortec 5300 H.O.

 

GEN 4 / LS CAR ENGINES
8th Digit of VIN RPO Code Disp. Common Name (Notes)
C LS4 5.3L LS4 (FWD only)
U LS2 6.0L LS2
Y L76 L76
2 L77 L77
W LS3 6.2L LS3
J L99 L99
P LSA LSA (supercharged)
T LS9 LS9 (supercharged)
E LS7 7.0L LS7

 

GEN 4 / VORTEC TRUCK ENGINES
8th Digit of VIN RPO Code Disp. Common Name
Iron Block
C LY2 4.8L Vortec 4800
A L20
J LY5 5.3L Vortec 5300
0 LMG
4 LMF
K LY6 6.0L Vortec 6000
G L96
Aluminum Block
M LH6 5.3L Vortec 5300
3 or 7 LC9
L LH8
P LH9
H LS2 6.0L LS2
Y L76 Vortec Max
5 LFA Vortec 6000 (hybrid)
J LZ1
8 L92 6.2L Vortec 6200
2 L9H
F L94
X

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