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Discussion Starter #1
Hi everyone I have fully build 4.6 cobra block from mmr with 17 Dished pistons with 2V PI heads port polish stage 3 with comp cam adjustable cam gears.I installed comp cam ex270ah stage 2 and had PTV issue I know those cams come 4* advanced,my pistons where notched on the intake side just to be safe but the exhaust and intake valves where still touching my pistons .I tried to degree the cams but I wash't sure if i did it right I came up with centreline for the intake side 111 on passenger side and 112 on the driver side the driver side was retarded 4* and passenger side retarded 6* .The comp cam card centre line was 109 for those cams I set them up at 111-112 and I still had PTV issue what is going on what am I doing wrong please help.
 
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