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1971 340 engine color blue? #2217448
12/20/16 01:31 AM
12/20/16 01:31 AM
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Massachusetts
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RAII4-speed Offline OP
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I have a late build 1971 Duster that the 340 engine is blue in color.
Can anyone explain when and why Ma Mopar changed this during 1971 model year cars?

Re: 1971 340 engine color blue? [Re: RAII4-speed] #2217480
12/20/16 02:20 AM
12/20/16 02:20 AM
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Posts: 17,518
Las Vegas, NV
6bblgt Offline
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the 1971 model year continued with 340 engines being assembled at the Windsor, Ontario engine assembly plant & will be stamped GW340 on the pad on the front of the block below the driver's side head. These engines are painted "street HEMI orange".

G = 1971
W = Windsor
340 = cu.in.

winter of 1971 the 340 engine assembly was moved to the Mound Rd. engine assembly plant in Detroit. These engines are stamped GM340 and are painted "Chrysler Corporate Blue".

G = 1971
M = Mound Rd.
340 = cu.in.

there were 5 car assembly plants (A,B,E,G,R) & 3 body styles (A,B,E) plus automatic VS. manual transmission (and A/C spec engines) that used the 340 for the 1971 model year, so the transition dates between the use of Windsor VS. Mound Rd. engines varies.

Re: 1971 340 engine color blue? [Re: 6bblgt] #2217494
12/20/16 02:36 AM
12/20/16 02:36 AM
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Posts: 17,518
Las Vegas, NV
6bblgt Offline
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Las Vegas, NV
from allpar:

Quote:
The factory, which by 1997 encompassed 956,000 square feet, was at 20300 Mound Road, Detroit, in Michigan; it covered nearly 40 acres and employed over 2,000 people, with 34,000 training hours scheduled for 1998 and a $133 million payroll. Annual taxes were $700,000. Just three robots were used.
The Mound Road plant was closed in 2002, its production moved to Mack Avenue (V-10s had moved to Conner Avenue in 2001); it was torn down in 2003 and has been paved over and used as a storage lot for Warren Truck.

Re: 1971 340 engine color blue? [Re: RAII4-speed] #2217600
12/20/16 10:14 AM
12/20/16 10:14 AM
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Posts: 222
Massachusetts
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RAII4-speed Offline OP
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GREAT Info ...... THANKS

Re: 1971 340 engine color blue? [Re: RAII4-speed] #2217636
12/20/16 11:40 AM
12/20/16 11:40 AM
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Posts: 42,714
Spokane Washington
ScottSmith_Harms Offline
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Spokane Washington
Here's what to look for on your block

340 Block ID (5).jpg340 Block Assembly Information.jpg
Re: 1971 340 engine color blue? [Re: RAII4-speed] #2217749
12/20/16 02:22 PM
12/20/16 02:22 PM
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Posts: 222
Massachusetts
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RAII4-speed Offline OP
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Massachusetts
AGAIN ... Great info THANKS

Re: 1971 340 engine color blue? [Re: RAII4-speed] #2218121
12/21/16 12:22 AM
12/21/16 12:22 AM
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Omaha Ne
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Originally Posted By RAII4-speed
AGAIN ... Great info THANKS


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