I am thinking the guts of the 258 into the 4.0 block making it something
like a 4.7 'stroker'. :-)

It would be worth it to just swap the short block for the OP then eh.
Keep the head and intakes and swap from there down. Even if the head
needed a valve job, that isn't much.

Mike

Will Honea wrote:
>
> The HO intake manifold is a whole lot nicer. The flow geometry is
> nice and symetrical. Between that and the port angles they got a bunch
> of ponies to add to the 4.0. Not that I would sneer at the umph of
> the '88 head on a 258 block...
>
> On Fri, 20 May 2005 12:49:20 UTC Mike Romain >
> wrote:
>
> > Ahh ok, good to know, thanks. I knew the ports were different but
> > didn't know the headers were. So only the short block will swap then.
> >
> > Man I got this 258 with a new crank sitting in my garage and an 88 4.0
> > getting tired..... Stroker, mmmmm......
> >
> > Mike
> >
> > Will Honea wrote:
> > >
> > > The intake and exhaust aren't the same. The 92 used the HO head and
> > > the mainfold/headers won't match up. Just looking at my 88 next to
> > > the son's 91, nearly everything else will swap. I looked at this idea
> > > a couple of years ago and decided that the only really easy way was to
> > > swap heads onto the good block.
> > >
> > > On Thu, 19 May 2005 12:15:12 UTC Mike Romain >
> > > wrote:
> > >
> > > > The engines are the same basically so you could just swap over the
> > > > electronic parts to the 89.....
> > > >
> > > > I would just swap over the 'engine' and leave the intake and exhaust
> > > > headers including the fuel rail, distributor and parts and alternator
> > > > from the 92 in there.
> > > >
> > > > Mike
> > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > 88 Cherokee 235 BFG AT's
> > > >
> > > > chevycruser_03 wrote:
> > > > >
> > > > > I need a '92 engine for my '92 cherokee. The one I have is '89 engine and
> > > > > does not mach up with the computer system. '89 has a new crank sensor
> > >
> > > --
> > > Will Honea
>
> --
> Will Honea