Re: V8 into 258 humpster

[farna@xxxxxxx]

You need a 2WD AW-4 trans. They are common down south, not so common up north and out west. There are a lot of salvage yards around Atlanta that usually have a few in stock -- the AW-4 rarely gives out before an engine, only then when it's been badly abused. The 4.0L headers should fit the Javelin just fine. They aren't "full length" headers if made for an XJ or ZJ. They only drop to just above the lowest point of the oil pan. The pan on a Jeep is 2-3" lower than one on a car, so don't forget to use your 258 oil pan and pickup tube if you swap. If not the pan extends about an inch below the crossmember (though the engine will fit) and has a nasty tendency to catch on things. I used the 4.0L oil pan when I first installed one. Wasn't long before I had a crack in it where it hit the front end alignment lift. 

On February 16, 2005 Widiker, John D wrote:

> I've been finding lots of deals on Jeep 4.0 engines and transmissions, my
> step dad had one in a grand Cherokee and it ran like a top with plenty of
> power. Bet it would seriously move a Javelin. Any advice regarding the aw-4,
> do I have to find one from a 2wd jeep or can I use one just sans transfer
> case? I think this is the most excited I've been in a while, it's such a
> nice driving car, I can save up the money for the swap while I drive it and
> do it over next winter. Any idea if jeep wrangler headers will fit in a
> javelin? Clifford has some Jav specific ones so I'm not so sure. I guess
> Kenny Bell makes a supercharger for the 4.0 Wrangler engine, it's way
> expensive but damn this would be a cool way to pop some eyes at a show.
> Thanks for everyone that's posted.
> 
> Oh the pizza cutter wheels and tires gotta go!
> 
> ~John
> 
> -----Original Message-----
> From: farna@xxxxxxx [mailto:farna@xxxxxxx]
> Sent: Monday, February 14, 2005 11:45 PM
> To: mail@xxxxxxxxxxxx
> Subject: RE: V8 into 258 humpster
> 
> 
> Heck John, if you liked the way it drove with the six why don't you do
> something unusual and KEEP THE SIX! One of the most looked at cars at one
> show was a pristine, unrestored light blue 71-74 Javelin with the original
> six in it. If you really want to swap engines swap a 4.0L in. Keep the EFI
> and all and you'll have the power of a V-8 but no suspension changes
> required. you can even put an AW-4 OD auto in! One caution if you go with
> the AW-4 though. It's got a high efficiency torque converter that doesn't
> multiply torque much. US built trannys (at least through the 50s to early
> 80s) have a torque multiplication of around 2.5:1 (anywhere from 2:1 to
> 3:1). That's why such a high (low number) gear was used in the rear axle
> (most AMCs are 2.87 or higher). The AW-4 convereter only multiplies 1.2:1,
> so a rear lower rear gear (higher number) is needed -- someting in the 3.23
> or lower range. I tried running a 3.08 with my stroker 4.6L and got worse
> mileage than I do since I changed!
>   to a 3.55 gear (this in a 63 Classic wagon). I wanted a 3.31, but got a
> good price on a set of Jaguar 3.55 gears with limited slip (yeah, I put a
> Jag axle under the rear for IRS and 4 wheel discs). I think the 3.31 gears
> would be ideal for something the size of the Javelin, 3.08 might work fine
> in a Spirit.
> 
> --
> Frank Swygert
> Publisher, "American Independent
> Magazine" (AIM)
> For all AMC enthusiasts
> http://farna.home.att.net/AIM.html
> (free download available!)
> 
> 
>  -------------- Original message ----------------------
> > From: "Widiker, John D" <john.widiker@xxxxxxx>
> > To: mail@xxxxxxxxxxxx
> > Subject: RE: V8 into 258 humpster
> > Date: Mon, 14 Feb 2005 11:18:53 -0500
> >
> > Well drove it 300+ miles and got it home fine, it's very very nice,
> > almost no rust anywhere. Do need a passenger front fender as the one
> > on the car is pretty creased. No cracks in the dash, interior is super
> > nice. Trunk looks great and I could take my hands off the wheel for
> > miles it tracked so straight. I LOVE THIS CAR!!!
> >
> > Today I'm going to be looking for a fender, investigating v-8 swaps,
> > looking at turbos, and smiling my butt off the whole time!
> >
> 
> > ~John
> 
> 
> 
> 
> 
> 
> .


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