Engine info

  • 1976-88 engine production figures
  • SBC torque specs
  • LG4 vs. L69
  • L69 buildup info Part 1/2
  • Specs from: GM L69, GM ZZ3 and GM 350/300hp
  • 400hp L69 buildup from 1983
  • 350 SBC engine swap FAQ
  • Small blocks and HP limits
  • Block ID/casting numbers
  • More casting numbers
  • Still more casting numbers
  • Bore and Stroke info

    Below are some engine ID pictures, it's a small block 350.

    block_alloy_mark_rear.jpg

    ABOVE: The tin and nickel content percentages.

    block_casting_number.jpg

    ABOVE: The casting number.

    block_main_caps.jpg

    ABOVE: The main caps, this is a 4-bolt.

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