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Discussion Starter · #1 ·
Hey guys, going though a rebuild, opened up my new cam last night and its slightly different than my original. All of the lobes are in the same spot and have the same shape. However, each lobe appears to be 3/16th of an inch more narrow and the new cam has a lobe for a mechanical fuel pump, which I don't have.... Is there a reason the lobes are more narrow or an issue using it?
 

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What Cam did you buy, it sounds like a very short duration cam for some thing like a 232 or 258. I think the lobe for the fuel pump shouldn't hurt any thing
 

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You probably want to double check with your supplier, but it sounds fine. The fuel pump lobe won't bother anything. The lifter contact area is what's critical, you don't want the lifter riding on the edge of the lobe, should be near center.
 

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sorry when you said lobe being narrower I thought you meant the duration, not the real with, WOW!
 

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From the looks of the picture, the lobes on the new one would not be centered on the lifter..I would send it back..
 
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