If you know a few pieces of information, you can turn a Vortech 5.3L block into an LS mill making way over 500 hp and out-displacing an LS3! To prove it we dyno one at Westech Performance.
One owner stated, "A good dyno tune will make the chances of 'BOOM' much less likely." Additionally, back in 2012 MotorTrend boosted a Vortec 5.3L and included a performance turbo blowoff valve ...
So that tradeoff is never beneficial. We did a dyno test of a set of iron Vortec heads without pocket porting compared to an aftermarket set of aluminum heads that had been intentionally ported ...