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Every single FE roller cam I have ever had (and I've had quite a few) is made of steel with one piece construction including the gear.
You get either the copper color between the lobes (gas nitride heat treatment - the copper keeps the core soft) - or you get the gray steel color (induction hardened - the machine steps the cam down and only heats/hardens the lobes). Both are essentially similar in hardness and gear metallurgy.
As far as I've been able to tell the Crane steel gear works well on either type - no 100,000 mile motors yet...
I see most OE cams as being SADI material - special austempered ductile iron. These are usually induction hardened with an intergral gear. The distributor gear on these is a specialty steel - and is doubtless the inspiration for Crane's gear alloy.
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Survival Motorsports
"I can do that....."
Engine Masters Challenge Entries
91 octane - single 4bbl - mufflers
2008 - 429 cid FE HR - 675HP
2007 - 429 cid FE MR - 659HP
2006 - 434 cid FE MR - 678HP
2005 - 505 cid FE MR - 752HP
Last edited by Barry_R; 11-11-2007 at 08:14 PM..
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