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Decoding information for '62 FC engines, transmissions, and differentials

The source for the information on this page is Chevrolet Technical Service Bulletin DR #504, dated November 2, 1961. The information has been reproduced in other locations, including Bob Helt's The Classic Corvair and The Corvair Junkyard Primer.

Engine code information

This code is located on the top of the engine block, immediately forward of the generator / oil filter adapter.

The format of the code is $####@@, where:

  • V = 80 HP, manual transmission
  • W = 80 HP, automatic transmission

Notes:

Transmission code information

This code is located different depending on the transmission type:

The format of the code is $$####%, where:

  • B = Toledo, OH PowerGlide automatic
  • SF = Saginaw, MI 3-speed manual
  • ST = Saginaw, MI 4-speed manual

Notes:

Differential code information

This code is located on the lower-left side of the differential carrier housing.

The format of the code is $$####, where:

  • HE = 3.89:1 ratio, manual transmission
  • HF = 3.89:1 ratio, automatic transmission
  • HL = 3.89:1 ratio, manual transmission, limited slip
  • HM = 3.89:1 ratio, automatic transmission, limited slip

Notes:

 

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