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Old 11-28-2018 | 11:56 AM
  #171  
GPM
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[QUOTE=ancho;4661269]Heads off. multiple exhaust valve guides worn, but are replaceable on these Dart heads so all will be replaced.

Just curious, are these older Pro 1s
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Old 11-28-2018 | 12:41 PM
  #172  
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[QUOTE=GPM;4661316]
Originally Posted by ancho
Heads off. multiple exhaust valve guides worn, but are replaceable on these Dart heads so all will be replaced.

Just curious, are these older Pro 1s
No idea. I saw they have an "iron eagle" debossed in the area between the valvesprings.
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Old 11-28-2018 | 01:18 PM
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That's a steel head, Pro 1s are aluminum. Dart had a problem a while back where they weren't machining the valves and rocker stands on the same angle, they would eat guides.
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