Thread: 401 M Startup
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Old February 12th, 2017, 07:21 PM
bigblockv6 bigblockv6 is offline
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Default Re: 401 M Startup
The 401M looks to be a 72 model year judging by the valve covers, yet it has the breather/filter in the back like pre 68 engines. Most likely it is a 72 built 401M that was a replacement engine for an earlier truck.
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