So if you have a Block with a Manual Trans block code and it was installed in a RA-III or RA-IV car with a Manual Trans, you probably got the better "armasteel" grade cast iron caps vs the normal iron block grade cast iron main caps.
That "armasteel" grade cast iron has fooled a bunch of people over the years.
"Much of this results from GM's marketing efforts to apply a certain mystique to standard engineering materials. First, Armasteel is not steel but a GM trade name for a grade of pearlitic malleable cast iron. As a 1982 GM brochure explains, it is a ferrous alloy with temper carbon in a matrix of tempered pearlite or tempered martensite. It was produced at the GM Central Foundry Saginaw Malleable Iron plant (SMI), which was closed in mid-2007."
So still a cast iron main cap block deal.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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