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What year was this made?

Kevin_D

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AMC technically bought Jeep in 1970 for 75 mil.
Due to the time it takes to change things over, engines and such weren't AMC until 72.
Well, they must’ve started sooner than ‘72: my ‘71 J4000 has the AMC 360, not the Buick 350.

Kevin
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Well, they must’ve started sooner than ‘72: my ‘71 J4000 has the AMC 360, not the Buick 350.

Kevin
Possibly - Buying in 1970 means the 71 model year was planned, perhaps started.
They came in in the middle of things.
I know they mated their engines to the GM THM400 using adapters so that may be how they handled the full size Jeeps.
The 258 wasn't used until 1972 - likely due to the big changes coming to it for the 72 model year with the transmission changes.

1971/72 was also a transition in other ways for AMC - they were dropping the heavy Borg-Warner automatic transmission in favor of the TF transmissions using the AMC bolt pattern.
71 model year AMCs still used the BW while 72 was strictly TF transmissions.
That meant a change in the crankshaft for all of their engines for the different flex plate and torque converter. The 1970 and 71 360 have a different crankshaft flange than the 72 and later.
AMC also used their engines with the THM400 automatics and an adapter place to mate the two differing bolt patterns. Made it simple to use a GM transmission behind an AMC engine because the adapters could be found from scrapped Jeeps.
For the AMC 6, 1972 saw the starter moved from the left side to the right side, along with the accessories moving around.
So that would explain the I6 not being used until 1972.
And the adapters could handle the V8 mated to the GM transmissions.
The AMC 327 was offered in Jeep trucks in the mid-1960s (they were also used in marine applications a lot)
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