raptor cam with 5.3 l heads
05-26-2011, 03:10 PM
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raptor cam with 5.3 l heads I have a lq4 iam gonna put a raptor cam with 5.3l heads ported with 2.0 intake valves do you think iam gonna have ptv clearence?? Any info would be great and what kind of pushrpds ill be needing?? Thanks in advance
05-27-2011, 09:00 AM
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That mostly depends on the duration of the raptor cam . With large duration cams say more than 230deg , that's where You really need to clay the piston for a cpl full revolutions to see what that clearance is . You probably should clay test anything more than 220 deg duration to be safe . Also if You're cam had lift of more than .600 and duration of more than 210 which would include all cams with that much lift , that also would be a candidate for the clay test . Good luck .
