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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


75 Chevelle 350 engine code

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G3GM :: G3 Tech :: Engine & Driveline

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75 Chevelle 350 engine code Empty 75 Chevelle 350 engine code

Post by ag_eet Sun Apr 02, 2023 3:57 pm

Just curious…What would be the engine code for my 75 Chevelle 350? If it has a code.

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75 Chevelle 350 engine code Empty Re: 75 Chevelle 350 engine code

Post by Iggy Sun Apr 02, 2023 6:52 pm

There are two different "codes" to identify an engine if it is original. The fifth digit of the VIN identifies the engine originally put in the car. The other code is on the engine itself on a pad on the block deck surface just under the alternator, it will have the plant, date of assembly followed by a 2 or 3 letter code - that code will identify the engine and type of chassis originally installed in.
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Post by 76 Malibu Sun Apr 02, 2023 7:52 pm

For the VIN codes, the 5th digit for a 350-2bbl was VIN Code "H" and 350-4bbl was VIN Code "L."
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Post by ag_eet Sun Apr 02, 2023 8:19 pm

Does it have a code like LT1 or L69? Thanks

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Post by 76 Malibu Sun Apr 02, 2023 10:20 pm

Yes you mean RPO codes.

350-2bbl = L65
350-4bbl = LM1
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Post by ag_eet Mon Apr 03, 2023 4:16 pm

Exactly! Thanks!

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