Miata Mailing List: May 1994, Message #136
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   From: dquara@encore.com (Doug Quara)
Subject: Re: Aftermkt. Mods...
   Date: Fri, 6 May 1994 11:57:59 -0400

James W. Adams, On May 6, 11:38am, writes:
> Subject: Re: Aftermkt. Mods...
> 
> > concerned.  If the 604 fits in a Mustang with "little modification," then
> > the Miata engine bay should accept.... Who wants to be first???
> 
> I expect this would have minimal effects on street performance over the
> 302.  The tests of the Monsters have generally stated that the torque
> was so excessive that first gear was useless, and so on.  A 604 in good
> tune could easily develop 750 HP or more, which might boost the top
> speed over 180 but is likely to have little effect under 100 unless you
> can put much wider tires on the car.
> 

Uh, I don't think it's practical.  While the 302 fits in the Miata, I suspect
that the 429 wouldn't, especially since a Mustang required "minor 
modification".  The 351 has a deck height more than 1" higher than
a 302, and a 429/604 higher still.  A 429 is also a good deal wider,
not to mention more than 100 lbs heavier than a 302.  Doesn't sound 
like something a sane person would do.  But then again, was it sane to 
stick a 302 in a Miata in the first place, or a 427 side-oiler in an 
AC Cobra?!?

:-)

Sometimes visionaries are labelled lunatics.

Doug Q.
dquara@encore.com