6066 (1960-1966) GMC Truck Club

6066 (1960-1966) GMC Truck Club (https://6066gmcclub.com/index.php)
-   GMC V6 and V12 Engines (https://6066gmcclub.com/forumdisplay.php?f=9)
-   -   401 M Startup (https://6066gmcclub.com/showthread.php?t=49891)

Quigley February 12th, 2017 02:26 AM

401 M Startup
 
https://youtu.be/bIMWFID3Zyk Video of 401M that I purchased out of San Antonio, Tx. Pretty Happy!!:upyes:

kchampagne February 12th, 2017 02:42 AM

Re: 401 M Startup
 
Very nice!!!

bigblockv6 February 12th, 2017 07:21 PM

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.:thumbsup:

BillT February 12th, 2017 11:30 PM

Re: 401 M Startup
 
Sounds good.

Funky61 February 13th, 2017 12:13 AM

Re: 401 M Startup
 
Congratulations! Sounds very Throaty and Muscular. :welldone:

TJ's GMC February 13th, 2017 03:25 AM

Re: 401 M Startup
 
Runs like a top! :goodjob:


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