The L29 454, also known as the Vortec 7400, in these applications made up to 290 horsepower. While the 454 was discontinued for production use, it never really went away for good. Read more ...
Since its infancy in the '70s, it has undergone several revisions, with a number of variants like the fifth-generation 454 big block and Gen VI Vortec 7400 truck engines, rated at 230 and 290 ...
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