Motor swap. Will it work with my transmission????? - JeepForum.com

 
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post #1 of 12 Old 01-19-2010, 09:37 PM Thread Starter
Nightwalker
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Motor swap. Will it work with my transmission?????

The motor I had was a stock AMC 304 V8, we're pretty sure it's the stock 3 speed transmission. My question is: Can we put a Chevy Small block V8 in the cj5 and keep the original transmission? Can we just switch the bellhousing out to one that will work?


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post #2 of 12 Old 01-19-2010, 09:50 PM
airtime262
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Yes and no...
yes you can keep the transmission, you'll need an adapter to fit to the tranny. Novak adapters has them, kinda pricey. Then you'll need motor mounts, I'm getting ready to do that, from what I've heard, m.o.r.e. mounts are the best and they bolt it. I dont know that you'd really want to keep that tranny, it's not the strongest. I'm swapping mine out for a sm465, and 205 transfer case. I'm just gonna have to have new drive shafts made, which is no big deal, was gonna do that anyway. Some people dont like the 205, because of the way it hangs, but I'm not gonna be doing radical off roading, so I think I'll be fine with that and a 4" lift. Look into the adapters, their site is really helpful, theres another adapter co. out there, but I cant remember the name right now. www.novak-adapt.com/

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post #3 of 12 Old 01-19-2010, 10:55 PM Thread Starter
Nightwalker
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Thank you ever so much!!! I can't afford a new tranny. We're only puting a new motor in cuz my cousin let the original motor eat itself.

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post #4 of 12 Old 01-20-2010, 02:36 AM
pazur
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we are talking about big $$ for chevy swaps into cj. what about sbf and t18? that's about right size into cj5, and you don't need adapter btw t18 and 300
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post #5 of 12 Old 01-20-2010, 06:06 AM
computertech
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Advance Adapters is the other company. They're cheaper than Novak. (at least for my purposes).

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post #6 of 12 Old 01-20-2010, 06:30 AM
bleoh
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Have you considered just replacing the 304 with an AMC 360?? From your sig it looks like you are into mudding on a budget. The AMC 360 will bolt in place of the 304, all you will need is a flywheel for the 360. You should end up with a bunch more power also (vs the 304,)

FYI, the Novak listed price for the adapter needed to bolt a T150 to a GM bellhousing is $311.
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post #7 of 12 Old 01-20-2010, 02:11 PM Thread Starter
Nightwalker
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My dad would prefer a chevy small block v8 cuz he's so used to working on them. I'm actualy considering a ford cuz that is the majority of motors around here, and I like ford. Only problem is I can't find an adapter for a ford small block v8 to mount it to my tranny so I would haffta go with a ford motor and tranny and I don't know if I can get them cheap and the transfercase adapter cheap enough.

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post #8 of 12 Old 01-20-2010, 06:53 PM
ReconRabbit
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The transmission is probably a t150. if it is it has a Ford bellhousing bolt pattern so a 302 or a 351w will bolt right up. You hav to either use a spacer or shorter the input shaft but no big deal. Just have to spring for some conversion motor mounts. Go to either advanced adapter or novaks websites. Tons of info

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post #9 of 12 Old 01-20-2010, 08:14 PM Thread Starter
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Choice! We have an old Grand Marquise that has a 302 in it. If dad thinks it's still good. I also found a 351 windsor on craigslist. Just gotta see what dad says.

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post #10 of 12 Old 01-21-2010, 08:32 AM
CSP
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Quote:
Originally Posted by nzirbel View Post
The transmission is probably a t150. if it is it has a Ford bellhousing bolt pattern so a 302 or a 351w will bolt right up.
Just to add to this, the existing bellhousing will not accept a Ford engine. You will have to have the correct Ford bellhousing to bolt to the existing transmission.
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post #11 of 12 Old 01-21-2010, 08:40 AM
Nickmil
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Guys, he has a '75 CJ. That means if it was a stock 304 then he has a T-15 not a T-150. Worlds of difference and it does NOT have the Ford bolt pattern on the front of the transmission like the T-150. The input shaft is longer too. There is an adapter available however. The T-15 is probably the strongest 3 speed ever used in a Jeep. Not up to par with a T-18, 435, 465 etc. but still a stout unit for its size.

Pazur, you do need an adapter between the T-18 and 300 as that combination was never used factory. Even if it was factory there would still have to be an adapter between the two.

Advance Adapters and Novak both make the necessary adapters. AA makes pretty good stuff but I've had better luck with Novak's adapters fitting better with no modifications. I've installed literally 100's of both over the last 20 years.

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post #12 of 12 Old 01-21-2010, 01:13 PM Thread Starter
Nightwalker
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You all are a great help!

Help to support your local American Red Cross.

"Give Life" Donate a pint of blood.

"This place is like a fine drug.

It's easy to start, hard to quit, you lose sleep over it, you lose money because of it, and you put up with alot of **** from some people associated with it. But no matter what you never wanna give it up."

Can't sleep?
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