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Old 12-26-2010, 12:16 PM   #9
Ol' Ron
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Join Date: May 2010
Location: Chester Vt
Posts: 8,840
Default Re: Is a 21A flathead desirable?

Yes the engine came with thin sleeves from the factory. The simple solution here is as WALT says, 86 the sleeves bore .045", late pistons, use 59 head gaskets and 81a heads. Very inexpensive way to gain a fair amount of torque.
Interchangeability, lov that Flathead.
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