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Old 02-24-2013, 05:17 AM
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Erson Camshaft Information

I know this has been addressed numerous times before but maybe not specifically to a particular camshaft.
Can anybody please confirm exactly what type of distributor gear I should be using to suit my 'Erson Cams' Hydraulic Roller Camshaft (E119715) in my S.B.Chevy. I was told that 'I can run an original steel gear on that camshaft', but would that be an original steel gear that G.M ran on their factory hydraulic roller cams or the cast type that they have been using on their more standard engines. Over here, if I ask for a steel gear - it is a machined piece of metal and cast, is cast metal and machined. The engine is fully assembled, so it not that easy to look at the camshaft, however I do know that it is NOT a billet steel camshaft. Thanks in advance

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Old 02-24-2013, 10:05 AM
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with a roller cam you need to use a brass gear
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Old 02-24-2013, 10:10 AM
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oldman1956,if you come across any sig erson cam information in your searches,PM me.I have a few questions about a couple old grinds.I started when I was a teen,using sig erson grinds.They were a fair price and the local speed shop stocked them,no waiting.When he retired,my new supplier marketed another brand.
Gus,he said its not a billet cam
not many but a few rollers can accommodate regular distributor gears
a bronze gear/composite gear should be safe.
Wonder what kind of gear was on the distributor that came out
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Old 02-24-2013, 10:17 AM
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I put a 383 together a couple years ago using a erson cam, the box and cam card all just have erson on them, would that still be sig erson or has it changed?
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Old 02-24-2013, 01:09 PM
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Erson Camshaft Information

What was fitted to the Mallory distributor I have was their 'standard' gear. Based on the original advise I was given I did purchase a Mallory Alloy Steel drive gear because it is suitable for cast cams. This gear is advertised 'for use with cast flat tappet hydraulic/mechanical cams and induction hardened or Austempered ductile iron roller cams'. I had this fitted when the distributor was freshened up and regraphed. I have since been advised to use a bronze gear and a steel gear. I am a little confused, but I am leaning towards the gear that I had fitted many months ago. Also, my understanding is Sig Erson camshafts is now Erson Camshafts.
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