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AMC 360 #2743265
02/15/20 06:01 PM
02/15/20 06:01 PM
Joined: Aug 2009
Posts: 679
Anderson, IN
1
1969RR Online content OP
mopar
1969RR  Online Content OP
mopar
1

Joined: Aug 2009
Posts: 679
Anderson, IN
Working on a customer's 1991 Jeep Grand Wagoneer with an AMC 360, not a Chrysler 360. I'm needing to replace the exhaust manifolds. Customer found some manifolds at Summit, but they don't designate AMC or Chrysler. I don't know if they are interchangeable or not. He had purchased an intake for the Jeep and it must have been for a Chrysler 360, 'cause it will not fit. Dorman lists manifolds, but again doesn't differentiate AMC or Chrysler. Maybe they are interchangeable, does anyone know for sure that can help me. Thanks in advance

Re: AMC 360 [Re: 1969RR] #2743270
02/15/20 06:17 PM
02/15/20 06:17 PM
Joined: Jan 2003
Posts: 31,084
Grand Prairie,Texas
stumpy Online content
I Win
stumpy  Online Content
I Win

Joined: Jan 2003
Posts: 31,084
Grand Prairie,Texas
I think the AMC heads are different and the Mopar manifolds won't fit.

Re: AMC 360 [Re: 1969RR] #2743323
02/15/20 08:55 PM
02/15/20 08:55 PM
Joined: Jan 2003
Posts: 16,276
UPPER MICHIGAN, MARQUETTE COUN...
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NITROUSN Offline
I Live Here
NITROUSN  Offline
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Posts: 16,276
UPPER MICHIGAN, MARQUETTE COUN...
Nothing is the same between those 2 engines. Dorman does show correct manifolds for that AMC application.Dorman

Re: AMC 360 [Re: NITROUSN] #2743325
02/15/20 08:59 PM
02/15/20 08:59 PM
Joined: Jan 2003
Posts: 16,276
UPPER MICHIGAN, MARQUETTE COUN...
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NITROUSN Offline
I Live Here
NITROUSN  Offline
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Joined: Jan 2003
Posts: 16,276
UPPER MICHIGAN, MARQUETTE COUN...
Summit also shows the correct ones from several vendors.Summit

Re: AMC 360 [Re: NITROUSN] #2743365
02/15/20 10:08 PM
02/15/20 10:08 PM
Joined: Jan 2003
Posts: 38,786
Round Lake Beach, Illinoisy
Rhinodart Offline
Rhinotruck
Rhinodart  Offline
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Posts: 38,786
Round Lake Beach, Illinoisy
I have a couple of AMC Ambassador wagons with 360's, nothing is the same as Chrysler 360's...


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Re: AMC 360 [Re: Rhinodart] #2743650
02/16/20 04:36 PM
02/16/20 04:36 PM
Joined: Aug 2009
Posts: 679
Anderson, IN
1
1969RR Online content OP
mopar
1969RR  Online Content OP
mopar
1

Joined: Aug 2009
Posts: 679
Anderson, IN
Thanks for the help, guys! I had found the same Dorman numbers but just wasn't sure if they'd fit an AMC 360. That's what I'll order. Thanks again!

Re: AMC 360 [Re: 1969RR] #2743719
02/16/20 07:58 PM
02/16/20 07:58 PM
Joined: Feb 2010
Posts: 1,587
Phila. Pa.
Mattax Offline
pro stock
Mattax  Offline
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Joined: Feb 2010
Posts: 1,587
Phila. Pa.
Good luck. let us know if they're OK.
Some have reported the fit isn't great. You may have to do some fitting.
My understanding is the small outer bolts were a change starting in 1979.
There was another change in design - which I don't recall but I think its mid 70s.

OMIX had them new with the heat stove.
However my experience with OMIX is they don't spend a lot of effort on QC.
I decided to rebuild mine.

The exhaust manifold bolts used since late 1969 early 70 are unique. Its was an early change for this generation AMC V-8 and there was service bulletin to dealerships.



Exhaust-Manifold-Bolts-3527.JPGIMG_3851.JPG
Re: AMC 360 [Re: Mattax] #2743725
02/16/20 08:09 PM
02/16/20 08:09 PM
Joined: Feb 2010
Posts: 1,587
Phila. Pa.
Mattax Offline
pro stock
Mattax  Offline
pro stock

Joined: Feb 2010
Posts: 1,587
Phila. Pa.
Intake manifold on the AMC 360 needs the heat shield. Might have to take the one off the old intake.
Valve train is another obvious difference.
Some stuff that is not AMC:
The ignitionsystem is Motorcraft. Alternator is Delco - should be 12SI. Starter for '91 may be Chrysler. If not its Ford.
The starter may still have a remote 'ford type' solenoid, but by '91 there also is a Chrysler type starter relay.
Transmission is Torqueflite 727.

IMG_5933.JPG
Re: AMC 360 [Re: Mattax] #2743941
02/17/20 01:20 PM
02/17/20 01:20 PM
Joined: Jan 2003
Posts: 5,724
Florida
Locomotion Offline
master
Locomotion  Offline
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Joined: Jan 2003
Posts: 5,724
Florida
Originally Posted by Mattax
Good luck. let us know if they're OK.
Some have reported the fit isn't great. You may have to do some fitting.
My understanding is the small outer bolts were a change starting in 1979.
There was another change in design - which I don't recall but I think its mid 70s.

OMIX had them new with the heat stove.
However my experience with OMIX is they don't spend a lot of effort on QC.
I decided to rebuild mine.

The exhaust manifold bolts used since late 1969 early 70 are unique. Its was an early change for this generation AMC V-8 and there was service bulletin to dealerships.




Are those bolts drilled hollow? Looks like an extreme race car weight saving trick. But AMC may have done that to make it easier to remove broken bolts. (Keeping the hole for easy-out removal centered?)

Re: AMC 360 [Re: Locomotion] #2744064
02/17/20 09:03 PM
02/17/20 09:03 PM
Joined: Dec 2014
Posts: 2,200
ohio
R
ruderunner Offline
top fuel
ruderunner  Offline
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Joined: Dec 2014
Posts: 2,200
ohio
Yes the bolts are hollow, been that way since the 70's at least.

Re: AMC 360 [Re: Locomotion] #2744214
02/18/20 11:07 AM
02/18/20 11:07 AM
Joined: Feb 2010
Posts: 1,587
Phila. Pa.
Mattax Offline
pro stock
Mattax  Offline
pro stock

Joined: Feb 2010
Posts: 1,587
Phila. Pa.
Just the tips of the bolts are hollow.
I've not seen the service bulletin myself. It apparently explains this was to reduce incidents of the bolts backing out. Having a hollow area creates more tension while staying in the elastic range for grade 5 bolts.


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