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Discussion Starter #1
I have a custom ground Comp Cams cam with a removable dist gear. How do I tell if I should run the cast gear or if I have to run the bronze gear on my msd dist?
Can I tell from the color of the cam gear? Its looks like a dark cast material now.
I can post a pic of the cam if need be.
I PM'd the guy that ran this cam and he said he ran a bronze gear; but to me the cam looks cast on the end but is a billet core for sure.
 

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sounds like a cast iron gear pressed on the billet core... its a good thing.. use it with stock cast distributor gear ....or when ever your not sure use a bronze gear on dist. comp should know also
 

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Crower, don't your distributors come with a coated steel gear that's compatible with billet core cams that have a steel gear?
 

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Discussion Starter #4
Thanks for the reply Crower. I am pretty sure its a cast gear so I will go ahead and run what I have.
 

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Butch
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Crower, don't your distributors come with a coated steel gear that's compatible with billet core cams that have a steel gear?
I wouldn't use a coated distributor gear on a billet core with a high volume oil pump many people believe they need, with a standard volume pump a coated one is fine

I don't show any wear with a bronze gear, You have to use the Ampco Bronze. I also machine the HEI's for increased oiling. Even on MSD's

I really like Crane's Distributor, and they have them modified for gear oiling
 

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Butch
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Has any one used cranes steel gear made for billet rollers?
If I don't want an engine to be married to a bronze gear I get Crane Cams to put an iron distributor gear on the camshaft. I include it in prices of cams, they cost me $18.88 extra when ordering a custom camshaft, I don't make one cent on the iron gear since cores from Lunati (8660 Cores) and others have an iron gear on the cam. I also prefer the 8620 cams from Crane (Gold/Copper between the lobes, the coating to isolate the heat treat from the core)

The coated steel is good but I would not use it with a high volume oil pump due to increased loads on the distributor gear
 

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Thanks for the good info. I run a standard volume pump from Percision but do spin it to 7,500 rpm. Ordered up a Crane distributor with the coated gear to try out. We'll see how it goes.
 

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Well, the distributor came in and the instructions say not to use the gear if any other material distributor gear has previously been run with the cam. Bummer.
 
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