Thanks! Just the Info I was lookin for! I guess the marketing stragedy
idea was wrong!
-Thanks Again
Dan Matthews
>From: Gary Shook <gary.shook@mci.com>
>To: dakota-truck@buffnet.net
>Subject: Re: DML: RE: Premag vs. Mag
>Date: Mon, 1 Mar 1999 11:25:47 -0700
>Reply-To: dakota-truck@buffnet.net
>
>The heads are interchangeable, but you must match the intake to the
heads..
>the intake bolt holes go straight into the head (~45deg angle) on
>pre-magnums, but on magnums they are vertical... Mopar Muscle did an
article
>late last year that showed about 70 HP more by putting Magnum heads on
a
>340...
>
>The valvetrain is also different... the pre-magnums used a oiled shaft
that
>the rockers pivoted on, while the Magnum heads use a hollow pushrod for
>oiling, and use a rocker stud setup... so actually, the Magnum heads
don't
>need oiling holes.. (they get oil through the pushrod)
>
>I also think that the pre-Magnum didn't use a roller cam (Magnum does)
and I
>think they went from a dual-plane intake design to the keg-barrel style
the
>Magnum uses
>
>I could probably find more exact descriptions if you like, let me know
if
>this answers your questions adequately.
>
>Gary Shook
>
>>My '91 Ramcharger was a pre-mag motor. It had throttle body injection
(the
>>magnums have multi port). The main difference is the heads. The way
the
>>intake bolts to the heads is different, and I believe the oil passages
>>might not line up the same (not sure about this).
>>
>>----------
>>> From: Dan Matthews <dakota_v6_89@hotmail.com>
>>> To: dakota-truck@buffnet.net
>>> Subject: Re: DML: RE: Premag vs. Mag
>>> Date: Friday, February 26, 1999 6:29 PM
>>>
>>> Thanks for the horsepower comparison , but i was really wondering
what
>>> made the Mag different from the Premag. What kinda component
differences
>>> on the engine.
>>
>
>
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