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Message: <blockquote data-quote="1996mustangGT" data-source="post: 552081" data-attributes="member: 8710">Alright guys, so I've gotten my 5.4 torn down to the shortblock, awaiting my ported heads to come in. Plans (for the moment) are the ported heads, custom cams (close to comp 270's). What is the max the internals can take?Also will there be any problems with me spinning the 5.4 up to 6,000 RPM's? The last thing I want to do is freaking sneeze a rod after I get this thing but together.If I really need to replace the rods/pistons then I will, but I will be one uber-sad panda for how long it will take me.IYW The plan way down the road is for a turbo. So I know I'll have to swap them out eventually....but that a few years down the road.Thanks for the help in advanced guys</blockquote>