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I have a 06 5.3 in my crew cab and going to change the cam from a 216/220 525/525 112 to a 218/224 550/550 112 and I have just had the 706 heads milled down .035. Curious if I might have any piston to valve cleance issues with that cam??? Even maybe with a 220/224 570/580 112. Let me know if either one of these cams will work without that issue. Not sure what tolerences there are in a 5.3. Any help is greatly appreciated.
you will have plenty of clearance for either cam.
would it really be a difference in power in those two cams
If both cams had very similar valve timing events, there would be about a 10-15 HP increase due to the higher lift and slightly longer intake duration.Quote:
Originally Posted by DuBbLe C
However, if the second cam has a later intake valve closing, then there could be a larger HP increase due to higher RPM capabilities. IOW, it would push the torque curve a little higher in the RPM range.
It's difficult to compare two similar cams with just duration/lift/LSA info. At a minimum we would need to also know the ICL, but having the timing info off the cam cards would be best to make an accurate assessment.
what kind of cams are those? i like the second one i think i wanna put it in mine. brand name???