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Old 06-22-2019, 06:27 PM   #13
rotorwrench
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Join Date: Jun 2010
Location: San Antonio, Texas
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Default Re: 21 stud cam installed in my 59AB

Quote:
Originally Posted by Ol' Ron View Post
I bored a 37 block too 3 3/16 and rah 8ba rods, pistons and crank. No sleeves. block is quite thick/ Had to turn the mains down on the crank.
They wanted uniformity in cylinder wall thickness is why they did it that way. They were worried that the thing would overheat with thin cylinder walls. I would have worried about leaks more than thickness of wall but I can see their point when running up mountain passes in the GAR. They were successful with the project anyway but you know it took them a lot of work to do all that stuff. I guess the GAR entry rules required it have a similar engine to what it came from the factory with or they just could have put an 59 series or Mercury 8CM type engine in there.
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