sinkorswim Posted February 9, 2004 Report Share Posted February 9, 2004 i was wondering. Anyone know if vitos power pistons are close to stage 3 porting? Is it a waste of time to do both? I know the intake holes are changed on the pistons. but with the porting both exhaust and intake would be change. if pistons add 5 hp will the porting only add a few more hp. Just curious to see what people think on here. Is the port timing changed on the pistons or just the size of the boost ports. Quote Link to comment Share on other sites More sharing options...
Hiram Posted February 9, 2004 Report Share Posted February 9, 2004 The power pistons raise the intake timing and duration but do nothing to the exhuast timing, this is where your porting will come into place along with cleaning out the intake track and tranfer feed tunnels. There is a difference and both together work good. Now vito's also has a super stock piston that will change the exhuast timing and will act as a mild port job or as you say stage 3. Quote Link to comment Share on other sites More sharing options...
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