Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by greyskull, Dec 31, 2003.
Was 96 the first year of the Vortec. Also what was the difference just the heads?
86 was actually the first year for Vortec engines, but only the 4.3 V6. the CPI "Vortec" 4.3 came out in 92, followed by the CPI "Vortec" 5.0/5.7 in 96. the shortblocks on the post '96 5.7s are identical to the '86-95 engines.
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