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pushrod clearance issues

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Old Dec 24, 2006 | 12:47 PM
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panchop
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Default pushrod clearance issues

well I went to adjust the valves on the new 327 engine i built and #3 and 6 intake pushrods need more clerance thru the 292 head. i checked it and did it before it got to this stage. i don't see what changed. anyhow. anyone know some trick , you don't have to take it all apart again , way to open up the pushrod passages a little bit. I think i'm not going to bother with it till next week. enough already.
merry christmas
Greg
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Old Dec 24, 2006 | 04:40 PM
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Did you change to 1.6 rockers ? Anyway put some rags in the valley and top of the head, take a round file or die grinder and open them up, do them all now and vacuum up after
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Old Dec 25, 2006 | 12:38 AM
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Originally Posted by MotorHead
Did you change to 1.6 rockers ? Anyway put some rags in the valley and top of the head, take a round file or die grinder and open them up, do them all now and vacuum up after
And clean up with a vac and alcohol wipes.
cardo0
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Old Dec 25, 2006 | 10:46 AM
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Originally Posted by panchop
well I went to adjust the valves on the new 327 engine i built and #3 and 6 intake pushrods need more clerance thru the 292 head. i checked it and did it before it got to this stage. i don't see what changed. anyhow. anyone know some trick , you don't have to take it all apart again , way to open up the pushrod passages a little bit. I think i'm not going to bother with it till next week. enough already.
merry christmas
Greg
I have a pushrod angle problem which causes my rockers to not rock in a straight axis. I just ran it like this last year. It is caused by the 60/40 altered valve arrangement of Dart heads. I'm ready to button up my 427 so I've been looking at offset roller lifters and or offset roller rockers. This technology might be the fix for your pushrods if they have side clearance issues. I'm looking at the .180 I&E offset lifters.

1.6 ratio brings the pushrod closer to the rocker stud. The only fix I have ever used is longer valves used in conjunction with longer ARP rocker studs and longer pushrods
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