1979 Matching Numbers

Discussion in 'VIN, Trim Tag & Drivetrain Decoding' started by Senatorno1, Aug 23, 2017.

  1. Senatorno1

    Senatorno1 New Member

    10
    0
    Nov 21, 2016
    Hi All
    Wondering if someone could help me , how can i tell if the engine in my car is the original factory engine ?
    Thanks Heaps in advance
     
  2. Gary S

    Gary S Administrator Lifetime Gold Member

    20,631
    181
    Apr 14, 1999
    Bismarck, North Dakota
    Look on the pad on the block under the alternator. You should find two numbers there. One identifies the engine from the engine assembly plant. The other number will be a partial VIN matching the VIN of the car. If it doesn't match, it isn't original.
     
  3. 70lt1z28

    70lt1z28 Veteran Member Gold Member

    1,169
    128
    Oct 3, 1999
    Beavercreek, Ohio, USA
    Or, even if it DOES match, now you can play the "is it a re-stamp" game that everybody with a 1969 Camaro does. Actually very unlikely with a 1979, but could be someday. At least the VIN isn't stamped on the bell housing area by the oil filter where its almost impossible to see it.
     
  4. Senatorno1

    Senatorno1 New Member

    10
    0
    Nov 21, 2016
    Thanks heaps for the advice , the reason i was in hope was because the casting number is 3970010 which is the correct era and also the engine code is T1122DRH which makes it a 1979 350 auto LM1 , and the car is a 79 350 auto , must have had an engine change early in life or just coincidental , I would be interested in your comments thanks heaps for your help
     
  5. Gary S

    Gary S Administrator Lifetime Gold Member

    20,631
    181
    Apr 14, 1999
    Bismarck, North Dakota
    The DRH code would be correct for a 350auto for that year, so most likely it is the original engine. It would be a bit difficult to find another DRH engine if the original one failed. Check the other number beside the DRH number. It will tell you for sure.
     

Share This Page