FLYNAVY30

iTrader: (1)

Im looking at purchasing a 408cu in short block from Texas speed to start the build for my '68 Corvette. They offer the option of a GENIII and a GENIV block option. Anybody know what the differences are? Im planning on running L92 heads CNCd by Advanced Induction and a cam spec'd to match...looking for a nice street motor in the 500 horse range. Any input is much appreciated.

Thanks!