11-05-2017, 05:18 AM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,483
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Not Ranked
Well it is ribbed which is typical of my 428 service block. Not sure if ribbed 390 service blocks were also cast - but probably so. Pulling the pan and measuring the bore below a piston and checking crank numbers should clear things up.
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