Correct 70 350 hp 1100990 alternator?

[Bill L.]

Re: Correct 70 350 hp 1100990 alternator?

Cold-heading bolts really beats hell out of the heading die that contains the headmark, and they were changed regularly for maintenance or replacement; it wouldn't be unusual for those heading dies to have several sllght variations in the headmark portion. A cold-header or Fourslides machine runs so fast you have to use a high-speed industrial camera to monitor its operation.

Hi John,

Are saying that the picture I posted may be a legitimate and correct bolt? What other head marks might be correct for a June built 70?

Thanks,


Bill

[John H.]

Re: Correct 70 350 hp 1100990 alternator?

Hi John,

Are saying that the picture I posted may be a legitimate and correct bolt? What other head marks might be correct for a June built 70?

Thanks,


Bill

Bill -

I don't know, but I DO know that when you're cold-heading 600 bolts per minute and making regular heading die changes, they aren't always all the same impression; it's naive to assume that every single bolt that came in a Rockford (or any other manufacturer) box over a period of several years had EXACTLY the same headmark. They weren't like minted coins.