Thread: 478 to SM420
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Old March 10th, 2017, 03:35 AM
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Default Re: 478 to SM420

If you go with the 401M you can still get pistons these engines and if the 401M has the 6 bolt crankshaft flange which will allow you to use the 305E flywheel and bellhousing, it is an internal balanced engine so there is no weight on the balancer or flywheel.
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