They also both use an aluminum block and L92/LS3 cylinder heads. While both the LS3 and LSA make use of higher-flow rectangular port heads, compared to cathedral port heads found on earlier Gen ...
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LS3 Vs. L99 Engine: What's The Difference & Which Is Faster?A Step-By-Step Guide Both the LS3 and L99 were built on the fourth-generation GM small block architecture. Both engines are 6.2-liter pushrod V8s that use Gen IV rectangular port cylinder heads.
Dyno testing a 2011 Corvette Grand Sport (manual) with TrickFlow Specialties LS3 cylinder heads and camshaft package, which is also equipped with long-tube headers and a custom tune from Greg ...
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