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Unread 09-29-2014, 03:40 PM   #1
DLord5
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AMC 304 to a T86

Hi all! When I bought my '66 cj5 the previous owner had taken out the buick V6 and put in a chevy 4 cylinder. I want to put in my 304 out of my '74 cj5. I am not into hard 4 wheeling, just trail driving with the kids, will I have to change the trans, or transfer case?

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Unread 09-29-2014, 03:54 PM   #2
swampbuddy
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What transmission do you have in it?
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Unread 09-29-2014, 04:09 PM   #3
DLord5
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In the '74 I have the T15, with a Dana 20 transfer case. "66, T86 with a Dana 18 transfer case. I will just swap the whole deal if that is an option! Wasn't sure if I would have mounting issues. I hope I do not sound like a moron, I just have limited experience with swaps.
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Unread 09-29-2014, 04:35 PM   #4
swampbuddy
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According to Novak, a T86 doesn't bolt up to an AMC motor
http://www.novak-adapt.com/knowledge/t86.htm

Not sure how everything will bolt in to a 66', I never been lucky enough to own or wrench on one.

Take some measurements and see how things line up and fit. Keep an eye on the fan clearance at the radiator and the front driveshaft location and placment (make sure it won't hit anything)

Next best thing is do a Google search for a AMC V8 swap for a 66' CJ, I'm sure there is someone out there that has done it or tried to do it.

What about going back to the V6? It should be a direct bolt in.
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Unread 09-29-2014, 04:36 PM   #5
CSP
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Pretty sure that your biggest issue is going to be fitting the AMC V8 in a front clip that's 5" shorter than the one it's coming out of.
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Unread 09-29-2014, 04:38 PM   #6
swampbuddy
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Quote:
Originally Posted by CSP View Post
Pretty sure that your biggest issue is going to be fitting the AMC V8 in a front clip that's 5" shorter than the one it's coming out of.
What if he went to an electric fan?
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Unread 09-29-2014, 04:40 PM   #7
CSP
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Maybe that's a possibility.

Just judging from the questions the OP has asked I'm not sure he's even aware that the '71 and older engine compartments are smaller.
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Unread 09-29-2014, 04:46 PM   #8
swampbuddy
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I wasn't 100% sure either.
I just hate to see a AMC motor go to waste. For some reason you can't find new ones anymore
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Unread 09-29-2014, 05:06 PM   #9
DLord5
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Thank you all for your replies! I have thought about going back to the V6, but like was said I don't want the 304 to go to waste. I am not familiar at all with the '66. Just saw the difference is steering... The '74 isn't going anywhere, so I will be sure not to let anything go to scrap. Geez, I didn't know about the front clip either... I think I have lots of research to do before I swap anything! Anyone know where I can get another dauntless V6? I posted a thread about swapping my Dana 27 with the Dana 30 that came out of my '74. Any opinions about that, or should I wait on the other thread? Thanks again all!!
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Unread 09-29-2014, 05:09 PM   #10
DLord5
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Quote:
Originally Posted by CSP View Post
Maybe that's a possibility.

Just judging from the questions the OP has asked I'm not sure he's even aware that the '71 and older engine compartments are smaller.
I thought it looked smaller, but I thought it was just because of the motor!
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Unread 09-29-2014, 05:29 PM   #11
DLord5
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I just saw online that there is no adapter to mount the t86 to any AMC engine. Would this trans then bolt to any Chevy V6? I found a 2.8 for cheap, and am now thinking of going that route...
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Unread 09-29-2014, 05:29 PM   #12
DLord5
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http://www.novak-adapt.com/knowledge/t86.htm
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Unread 09-29-2014, 05:38 PM   #13
BlueRubiconrich
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Quote:
Originally Posted by CSP View Post
Pretty sure that your biggest issue is going to be fitting the AMC V8 in a front clip that's 5" shorter than the one it's coming out of.
Ok you got the 304 get a Jeep T18 and the Dana 20 or Scout 300.
and build a 72-CJ7. Your 66 frame is C channel to much work to put the 304 in that. Or drop a 231 even fire V6 in to the 66 call it a day.
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Unread 09-29-2014, 06:54 PM   #14
CSP
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Quote:
Originally Posted by DLord5 View Post
Geez, I didn't know about the front clip either...
Look at where the back side of the front fenderwell opening ends on each one for a comparison. It will be very obvious looking at both of them.
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