Official AMC V8 swap thread - Page 3 - JeepForum.com

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post #31 of 494 Old 07-21-2007, 01:18 PM
tomthbomb
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I am running stock exhaust manifolds on the 401. I ran outside the frame side exit headers on the original 304 for years. That and too mant .44 mag's touched off with no hearing protection account for my hearing loss.

Let's see some inside the frame rear exit headers.

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1978 CJ-7 original owner; AMC 401 V-8 (w/some goodies);NP4500;D300 (w/Curry 4:1); D44 front;AMC20 (Warn one piece axles) rear
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post #32 of 494 Old 07-25-2007, 11:13 PM
Jeff5886
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are there any links anyone can give me for a 360 swap from an I6
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post #33 of 494 Old 07-26-2007, 12:00 AM
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This thread is dealing with all AMC V8 engines. The 304, 360, 401 and the older AMC engines are all the same size externally. Go back to the first page of this thread and it should answer most of your questions.

Jeep #1 = 76 CJ5, 304, T18, Twinstick Dana 20, Lock-Right in front, Yukon HD front axles, One piece axles - Detroit Locker in rear, 2.5" Rancho Springs, 1" lift shackles, 32x11.5 Super Swamper TSL/SX, Warn XD9000i, York OBA.
Jeep #2 = 80 CJ7, 401, T18, D300, 3" Black Diamond Lift, TrXus M/T 33x12.5, Yukon 1 piece axles, Auburn posi in rear, Detroit TrueTrac in front, Ramsey 8000.
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post #34 of 494 Old 07-26-2007, 04:18 AM
Jeff5886
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are these the motor mounts needed?

http://www.baseline4x4.com/proddetai...rod=12472%2E05

Last edited by Jeff5886; 07-27-2007 at 12:24 AM.
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post #35 of 494 Old 07-27-2007, 02:46 PM Thread Starter
BLS33
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Quote:
Originally Posted by Jeff5886
You don't NEED all of those mounts and brackets (you only have to have the passenger side mount and both brackets) but it isn't a bad idea to go ahead an replace the rubber mounts and the other frame mount.
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post #36 of 494 Old 07-27-2007, 07:16 PM
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* 1 - 17472.01 Lower Left Engine Mount Bracket
* 1 - 17472.02 Lower Right Engine Mount Bracket
* 1 - 17472.03 Upper Left Engine Mount Bracket
* 1 - 17472.04 Upper Right Engine Mount Bracket
* 1 - 17473.16 Motor Mount Pair, Rubber

Of these parts, what do I NEED?
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post #37 of 494 Old 07-27-2007, 07:48 PM Thread Starter
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You can re-use the rubber mounts you already have from the I6 (if yours are in crappy condition you might want to replace them.). You need both uppers and only the passenger side lower you can reuse the drivers side. I don't know which is considered left or right

Also I'm assuming that the "lower" mount means frame mount and "upper" means block bracket.

I've circled the needed parts for you:

Can someone verify that the drivers side frame mount is the small one? Its been a while since I did my swap and I'm not 100% on that.
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post #38 of 494 Old 07-27-2007, 08:06 PM
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yes i need to have these ordered by tomorrow so can someone help me out here what ot of those 6 parts do i need?
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post #39 of 494 Old 07-27-2007, 11:07 PM
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You need all of the mounts and brackets in the picture except the small frame side mount (driver's side). It is the same for the 258 or V8's. The rubber motor mounts are not the same for the 258 and AMC V8's. Full size Jeeps and CJ's use the same rubber motor mounts for AMC V8's.

Jeep #1 = 76 CJ5, 304, T18, Twinstick Dana 20, Lock-Right in front, Yukon HD front axles, One piece axles - Detroit Locker in rear, 2.5" Rancho Springs, 1" lift shackles, 32x11.5 Super Swamper TSL/SX, Warn XD9000i, York OBA.
Jeep #2 = 80 CJ7, 401, T18, D300, 3" Black Diamond Lift, TrXus M/T 33x12.5, Yukon 1 piece axles, Auburn posi in rear, Detroit TrueTrac in front, Ramsey 8000.
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post #40 of 494 Old 07-28-2007, 02:20 AM Thread Starter
BLS33
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Quote:
Originally Posted by plain76cj5
You need all of the mounts and brackets in the picture except the small frame side mount (driver's side). It is the same for the 258 or V8's. The rubber motor mounts are not the same for the 258 and AMC V8's. Full size Jeeps and CJ's use the same rubber motor mounts for AMC V8's.
Really? I could have sworn I used the same ones from the I6 before I used the M.O.R.E. thanks for clearing that up
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post #41 of 494 Old 07-28-2007, 11:16 PM
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Yeah, the factory V8 mounts have a diagonal bolt pattern and the 258 has only one bolt I think. Other than that they look the same.

Jeep #1 = 76 CJ5, 304, T18, Twinstick Dana 20, Lock-Right in front, Yukon HD front axles, One piece axles - Detroit Locker in rear, 2.5" Rancho Springs, 1" lift shackles, 32x11.5 Super Swamper TSL/SX, Warn XD9000i, York OBA.
Jeep #2 = 80 CJ7, 401, T18, D300, 3" Black Diamond Lift, TrXus M/T 33x12.5, Yukon 1 piece axles, Auburn posi in rear, Detroit TrueTrac in front, Ramsey 8000.

Last edited by plain76cj5; 07-29-2007 at 08:41 AM.
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post #42 of 494 Old 07-29-2007, 10:45 AM
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What about Head swaps?, will 304 fit 360 etc... What is the best Head for the 360? I have a 360 rotating assy just need heads. Thanks Stu

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post #43 of 494 Old 07-30-2007, 04:50 AM
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Quote:
Originally Posted by Coptrdoc
What about Head swaps?, will 304 fit 360 etc... What is the best Head for the 360? I have a 360 rotating assy just need heads. Thanks Stu
304 heads have smaller valves. Look for dog leg heads from a 360 or a 401.

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post #44 of 494 Old 07-30-2007, 04:51 AM
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Quote:
Originally Posted by Coptrdoc
What about Head swaps?, will 304 fit 360 etc... What is the best Head for the 360? I have a 360 rotating assy just need heads. Thanks Stu
304 heads have smaller valves. Look for dog leg heads from a 360 or a 401.

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post #45 of 494 Old 07-30-2007, 01:04 PM
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I hate to do this, but there is something not quite right about the old 360/304 flexplate thing. I researched this subject a lot, (about a year ago) and I never could get a definite answer. I currently run a 304 w/ a TF727. The flexplate I ordered is for a 360. (because I have a 360 to swap in one day) I don't have any balance issues from the motor. Should I. And forgive me if I have misread something somewhere, but this subject is very confusing especially if you ask more than one person.

79 CJ7, 304, TF727, D300, FULL WIDTH D44's, 4.56:1, SPOOL LOCKERS, SOA, OUTBOARDED, SHACKLES REVERSED, HOMEMADE D-SHAFTS, 38.5" BOGGERS
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