Gen III engine Identification, need some help

Discussion in 'The Garage' started by sled_dog, Apr 8, 2007.

  1. sled_dog

    sled_dog 1 ton status

    Sep 3, 2002
    Likes Received:
    Austin, TX
    A buddy raised a good point, I can't tell if I have a 5.3L or a 4.8L. The previous owner told me it was a 5.3L, and an 02. Problem is, some info I am finding says the 862 heads only came on 99-00 5.3L engines. I have 862 heads and if it is an 02, then that scares me into thinking it is a 4.8L. Anyone be any help? LS1Tech is good for some stuff, but those guys seem rather strange about the simple information.

    Everything I can find about engine IDing online is all based off of the VIN, which all I know is this came out of a GM truck, and thats it.

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