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Re: Vortec Heads w/ non Vortec Intake
Posted to Technical Discussion Forum on 2/4/2025 3 Replies

You can redrill the Vortec heads for the early bolt pattern. Done all the time. Also many of the aftermarket Vortec heads come already drilled with both patterns.

The holes that Robert is seeing are where the intake rocker arm studs are installed. The factor... Login to read more.

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