ptv clearance
#1
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ptv clearance
ok so i am wondering what the stock heads ptv clearance is with a cam that has .610 lift. I am running prc stg 2.5 heads and .610 lift and am curious as to how close i am. motor is a 5.3l stock bottom end, stock pistons.
thanks
thanks
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grr kinda what i was thinking after reading a bunch of kinda close to my setup threads.
so how close is close with this setup. and yes i know i should have checked but i just put in new rockers with larger ratio so the ptv would have changed anyways.
maybe someone out there is running something similar can chime in.
aklowrider, did you check your ptv clearance, your cam has a little less left than mine and are running the same rockers.
Thx
so how close is close with this setup. and yes i know i should have checked but i just put in new rockers with larger ratio so the ptv would have changed anyways.
maybe someone out there is running something similar can chime in.
aklowrider, did you check your ptv clearance, your cam has a little less left than mine and are running the same rockers.
Thx
Last edited by zapata41; 06-22-2009 at 10:56 PM.
#4
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No, I didn't. My heads have not been milled, and I'm using a relatively low (.551) lift cam. After the 1.8 rockers, my valve lift is at .583, Roger Vinci advised me not to worry until around .600 lift to start checking, unless heads have been milled. That also seemed to be the general consensus when I did my own researching on the boards. Also, since I'm using a Maggie, my duration is not too wild.
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yes i understand it is wise to do it. i changed rocker ratios and now am curious so i am asking to see if anyone out there has a similar setup that has checked there's
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