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Walt Dupont--Me. · 12-26-2010, 04:10 PM

Matt, the 8BA crank will fit right in the 39 up block. You'll have to get the aluminum seal retainers for the rear seal. Alot cheaper rod bearings. Use the main bearings that goes with the block. Walt

12-26-2010, 04:10 PM	#12
Walt Dupont--Me. Senior Member Join Date: May 2010 Location: Gardiner Me. Posts: 4,200	Re: Is a 21A flathead desirable? Matt, the 8BA crank will fit right in the 39 up block. You'll have to get the aluminum seal retainers for the rear seal. Alot cheaper rod bearings. Use the main bearings that goes with the block. Walt