News: Putting FUN and FRIENDLINESS, FIRST into owning and learning about AMC small bodied cars, primarily Eagles, Spirits and Concords as well as vehicles built in AMC's Mexican subsidiary, VAM.

The AMC Eaglepedia can now be accessed using the buttons found below  This is a comprehensive ever growing archive of information, tips, diagrams, manuals, etc. for the AMC Eagle and other small bodied AMC cars. 

Also a button is now available for our Face Book Group page.


Welcome to the AMC Eagles Nest.  A new site under "old" management -- so welcome to your new home for everything related to AMC Eagles, Spirits and Concords along with opportunities to interact with other AMC'ers.  This site will soon be evolving to look different than it has and we will be incorporating new features we hope you will find useful, entertaining and expand your AMC horizons.

You can now promote your topics at your favorite social media site by clicking on the appropriate icon (top upper right of the page) while viewing the topic you wish to promote.


  • March 28, 2024, 02:32:35 PM

Login with username, password and session length

Author Topic: 360 swap exhaust problems  (Read 15322 times)

0 Members and 1 Guest are viewing this topic.

Offline BenM

  • AMC Eagles Den Addicted
  • ********
  • Posts: 1512
  • Thumbs Up 74
  • Pittsburgh, PA
Re: 360 swap exhaust problems
« Reply #15 on: May 05, 2012, 09:00:26 PM »
I would use 2" and go to 2.5" after the Y where they come together, but I don't like to be showy. Plus, I don't believe I'd ever notice the difference with anything larger. I wouldn't even sweat 1.75" if I needed it to clear parts around the motor.

I don't spend a lot of time at high RPM and wide open throttle. The smaller pipes may help with off-idle torque as well.
NSS#47184

1987 AMC Eagle Sedan -- 1976 Pacer Coupe -- 1968 Pontiac Tempest Custom S -- 1940 Mercury (& a 2002 Jetta Turbodiesel, 5 spd., the Wife's Daily Driver)

Offline mudkicker715

  • Administrator
  • AMC Eagles Den Addicted
  • ******
  • Posts: 3002
  • Thumbs Up 167
Re: 360 swap exhaust problems
« Reply #16 on: May 05, 2012, 10:02:46 PM »
The 304 i ran 2" but as stated i had all the room i wanted.
 the stroker 6 was tight for 2". i wanted 2.25", doesn't fit.

again i only compare the mid ninety's kee manifold since it looks to be placed comparitively to the v8.



Manitowoc WI

Offline carnuck

  • Having a 727 means never re-doing the trans again
  • AMC Eagles Den Addicted
  • ********
  • Posts: 3451
  • Thumbs Up 89
  • Near Seattle
    • Virtual Jeep
Re: 360 swap exhaust problems
« Reply #17 on: May 06, 2012, 05:27:34 PM »
On my Jtruck I ovalled the pipe to fit between the frame and floor so I could use the space between the frame rails for air tanks and stuff (MAN I miss my J4000!)
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

Offline The Dark Side of Will

  • Eagle DL
  • ***
  • Posts: 240
  • Thumbs Up 10
  • Too much effort into cars that are too cheap
Re: 360 swap exhaust problems
« Reply #18 on: December 25, 2017, 08:37:44 PM »
The offset for the 258 is about 1-1/2" to the passenger side. This won't work with the 360. You need to decrease the offset to about 3/4". You'll have to cut the old engine mounts off the crossmember and make new ones. You need to bolt the engine to the existing transmission and then slide it sideways to know where to put the mounts on the crossmember.

Most people shave the strut rod bracket a little bit as well. This picture is from a V8 conversion sold on ebay. Mine will have a similar proximity to the bracket. Instead of grinding at it, I'd like to take the hump out of the bracket and make it flush against the subframe, with a notch in that lip in the way, but that would be alot of cutting and welding for very little gain. I'll probably just shave it like this.



I will disagree with you on a technicality, BUT agree with your point.

If the 360 is centered between the mount pads on the crossmember, then it is offset to the RIGHT by 1 inch. The engine needs to be shifted left by an inch to be centered between the frame rails.

Because the AMC/Jeep inline 6 block bulges out on the right more than it does to the left, the original position of the crankshaft is centered between the frame rails.

 

SMF spam blocked by CleanTalk