what does LHO stand for??

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Mar 1, 2006 | 08:36 PM
  #1  
im new so be gentle...i have a 91 rs 3.1 (type T) and ive noticed some postes on here that have engine's listed 3.1LHO.
is a LHO a special version of 3.1 or, are all 3.1 LHO??
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Mar 1, 2006 | 08:43 PM
  #2  
LH0 is the RPO code for the 3.1 mpfi engine. All 3.1's in thirdgens(and most other gm cars) are LH0's
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Mar 1, 2006 | 10:02 PM
  #3  
naft is correct, but I'll extend it more.

Every option on your car has a code, which is what the RPO is. LH0, LB8, LB9, B4C, IC5, F41, etc... I'm guessing about 100 or more codes, all 3 long.

The RPO for the 3.1 is LH0, not LHO.

View this thread about halfway down, and you will find more specs on the v6 engines in these cars.

https://www.thirdgen.org/techbb2/sho...hreadid=339280
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