4.0 Head on a 258 shortblock

["Brien Tourville" <hh7x@xxxxxxxxxxx>]

Best 258 / 4.0 site is :

Strokers@xxxxxxxxxxxxxxx

go to Yahoogroups and sign up >

depending on the year of the 258 >
you'll either have 1/2" head bolts or
7/16 on the 1981 and up 'Lite' versions.

YOu can make sleeves to take up the
slack between the 1/2" holes of the
4.0 head and your 7/16" headbolts
or you can tap your block to use
1/2" headbolts (better).

As to the Intake / exhaust manifold >
are you upgrading to EFi with the swap ?
(better) > if so > join Strokers as all
the info is there along with some very
helpful membership.

Some like the Renix EFi system as it
accepts the Crane 905 cam (nice Torque)
and other changes > compensates with
a knock sensor etc.

Depending on what car you have >
the 1999 and up EFi Manifold is Best.

If you have an Eagle or Gremlin or
Hornet or Concord>
only the Renix (1987 - 1990 ) EFi
manifold will work due to space
between it and your Brake Booster >
you can run a HydroBoost from a
truck > that is Jim B. territory to
address.

If you're running a carb > find the 
1987-88 Eagle Intake manifold >
as it is fitted to a close to 4.0 head
in that year vehicle.

You should find the Renix 1987-1990
stainless steel exhaust manifold as
it 'dumps' further back than do the
later models.

I have read that these were designed
by BORLA > hard to believe since
they are Ugly ......... but one never
knows ..... does one?


Brien.
NEW YORK
eagle registry #501
eagle kammback registry



From: Todd Tomason <jayscore@xxxxxxxxxxxxx>
Subject: 4.0 Head on a 258
To: AMC List <mail@xxxxxxxxxxxx>
Message-id: <200505051959.24107.jayscore@xxxxxxxxxxxxx>

Anyone have any good information on adapting a 4.0 cylinder head to a
258?
 I found an article by Tim Weaver on the web.  Are there other sites
 I'm
not finding?

Thanks,


Todd