Can't quite find the info I need for mid 70s 318 and 904 swap - JeepForum.com
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Unread 01-31-2013, 08:09 PM   #1
stockzj
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Can't quite find the info I need for mid 70s 318 and 904 swap

I already have the 318 and the 904 so I just need info on mounts for the trans and 318. Are the motor mounts the same as the 318 that comes in the zjs or do i need 70s motor mounts. Does anyone know what it will take to mount the 904 in the jeep. I am going to pull the motor and trans soon any way and see what i need to make it work. I just want to see if anyone can tell me what i need so i can prepare

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Unread 01-31-2013, 08:33 PM   #2
dnuccio
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youre trying to put a 70s 318 and trans in a 97 4.0 ZJ? good luck, thats all i can say
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Unread 01-31-2013, 09:57 PM   #3
ratmonkey
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yeah....not a bright swap. 70's 318's had less power and torque than your 4.0.
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Unread 01-31-2013, 10:22 PM   #4
stockzj
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My 4.0 is dead and the 318 has been stroked among other things
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Unread 02-01-2013, 12:05 AM   #5
ratmonkey
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add mpfi and you'll be good. but it's a major swap no matter how you slice it
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Unread 02-01-2013, 07:18 AM   #6
dnuccio
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How are you going to deal with all the electronics? You're talking about putting a carbed engine in an OBDII vehicle. The computer is gonna go crazy
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Unread 02-01-2013, 10:29 AM   #7
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Yeah, the swap isn't emissions legal no matter how you slice it. You'll also be losing overdrive and the lock up torque converter using that transmission.
All around, bad idea.
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Unread 02-01-2013, 04:51 PM   #8
stockzj
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Ditching all the electronics and is exempt from passing emissions in MA, if the 904 will not be good for the swap what should I use
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Unread 02-01-2013, 06:25 PM   #9
ratmonkey
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Quote:
Originally Posted by stockzj View Post
Ditching all the electronics and is exempt from passing emissions in MA, if the 904 will not be good for the swap what should I use
it's not exempt from federal law. can't swap in a motor that is older than the manufacture year of the vehicle or one that wasn't offered in that vehicles line up as an option.
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Unread 02-01-2013, 07:00 PM   #10
dnuccio
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Quote:
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Ditching all the electronics
say goodbye to your gauges, they are all controlled by the electronics.

seriously not worth the work, if you want a V8, go buy a stock V8 ZJ. alot less work and probably alot cheaper too. not like theres a shortage of them
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Unread 02-01-2013, 07:59 PM   #11
stockzj
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Chances are it won't go back on the road
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