This is a discussion on 5.3 heads within the Internal Engine forums, part of the LSx Technical Help Section category; hey guys got a quick question. dont bash on me but i have heard that 5.3 heads are a pretty ...
09-07-2011, 12:48 PM #1
hey guys got a quick question. dont bash on me but i have heard that 5.3 heads are a pretty good upgrade and what not, we had a 5.3 truck come in to work the other day and the heads had 243 on them. Those are ls6 numbers so whats the difference? thanks clint.
09-09-2011, 01:29 PM #2
243 cast are the ls6 heads. That would be an upgrade to the 241s that are stock on your car. Also 799 heads are the same as 243.
09-09-2011, 01:36 PM #3
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5.3 heads will help with torque but hurt HP
09-10-2011, 06:33 PM #4
Ya i knew 241's were stock and what not and 243's were ls6 but was kinda confused. Thanks guys
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