The newer VORTEC engines may be more tempermental than you think. Remember, that's a cast iron block, and can come with aluminum heads and/or intake. These metals have 2 different rates of expansion when heated or over-heated. My 2000 CK3500 with just 176k miles+ has the 7.4L Vortec, and has had its intake gaskets replaced twice already withing 20k miles.
1965 Olds F85 wagon
1969 Olds Cutlass
1965 Falcon Van
1969 El Camino
1972 GMC 3/4T
1972 K5 Blazer
1971 C10
1976 Suburban
1978 Suburban
1930 F**d AA Stake
1989 CK3500 2WD
2000 CK3500 4WD
1953 GMC 3100
1] *Note* All drawings are subject to engineering changes at any given time without notice of: barometric pressure, wind patterns, caffiene, or written authorization of the female.
2] Cash for Clunkers: You can have my truck, after it has turned into a pile of rust in the driveway.
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