what engine is in my 2003 LS Blazer
#1
what engine is in my 2003 LS Blazer
Did they put more than one engine in a 2003 Blazer? Did the xtreme get a different engine?
#2
Auto zone lists 2 different engines. a "w" and a "x" with ohv
#3
All of them had the standard 4.3L.
#4
I think the "w" has a normal cam in it but the "x" has a different cam giving it 10 more hp
#5
There is only one engine available for the mid-2002+ s-series.
The difference between Vin W and Vin X was in programming alone and should have no impact on the choices for replacement parts.
The difference between Vin W and Vin X was in programming alone and should have no impact on the choices for replacement parts.
#6
I believe the difference between the engines is the manufacturing plant. If things haven't changed since the earlier days, one plant used heavier rods/crank than the other plant. You can't swap them. As for the external differences, tuning as Kyle pointed out.
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