Thread: 478 to SM420
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Old March 9th, 2017, 11:53 PM
bigblockv6 bigblockv6 is offline
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Default Re: 478 to SM420

Yes, you have to balance the whole rotating assembly which includes pistons, rods crankshaft, flywheel and have weight added to the front pulley as well or find a 379 or 432 front balancer. On my 478 they welded weight to the front pulley and it was quite a bit of weight.
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