[DeTomaso] Ford 392 rev limit?

Fri Sep 6 11:36:54 EDT 2013

Slightly off topic, several years ago, F1 engines eere hitting 22k and some
hit 23k, FIA set an 18k limit which will be dropping to 15k next season. I
read that the stroke on the 22-23K engines was about 1.75"

Michael Shortt
On Sep 6, 2013 11:32 AM, "Boyd Casey" <boyd411 at gmail.com> wrote:

> Saying piston speed is not the issue is like saying jumping out of an
> airplane is not what kills you , it's the sudden stop when you hit the
> ground! The faster the piston is moving the more stress is induced when it
> has to stop and change direction
> It's simple physics A body in motion tends to stay in motion  When a
> piston hits the bottom of its power stroke and is traveling at 5000 fps it
> wants to keep going, so if you have a weak crank, weak wrist pin  or weak
> mains (to name just a few potential areas of stress it will keep going! You
> can break criminal laws, you can break civil laws, but you can't break the
> laws of Physics.
> Boyd
>
>
> On Fri, Sep 6, 2013 at 11:07 AM, michael at michaelshortt.com <
> michaelsavga at gmail.com> wrote:
>
>> I think because Buick had a 425 back then, Dodge had already made 426
>> famous, they (Ford) had 428 ...so 427 was left available. Marketing
>> probably made that decision is my guess.
>>
>> Michael Shortt
>> On Sep 6, 2013 11:02 AM, "Doug Scott" <doug at pickbbs.com> wrote:
>>
>> > Ford has known since the early 60s that short stroke, big bore is the
>> > recipe
>> > for race engines.  Take a look at the bore and stroke of the 427
>> compared
>> > to
>> > the 428.  Don't know why they call the 427 a 427 though, the
>> displacement
>> > is
>> > closer to a 425.
>> >
>> > doug
>> >
>> > -----Original Message-----
>> > From: detomaso-bounces at poca.com [mailto:detomaso-bounces at poca.com] On
>> > Behalf
>> > Of MikeLDrew at aol.com
>> > Sent: Friday, September 6, 2013 10:50 AM
>> > To: cengles at cox.net
>> > Cc: detomaso at poca.com; pantdino at aol.com; zumzum at cox.net
>> > Subject: Re: [DeTomaso] Ford 392 rev limit?
>> >
>> >
>> > In a message dated 9/6/13 6 44 23, cengles at cox.net writes:
>> >
>> >
>> > > FWIW: on the Speed Talk website Engine Forum, the professional
>> > > machinists and engine builders have commented that the factory crate
>> > > engines have been found to have, ahem, factory seconds used as parts.
>> > > It is perhaps not in all the engines, but it has happened often enough
>> > > that the pros have commented on it.
>> > >
>> >
>> > >>>They do make one hell of a spec sheet though:
>> >
>> >
>> http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=10757
>> >
>> > I don't know if the engine in Jeff's car is *this* 392 or if they sold a
>> > lower-spec version.   It appears Ford has gotten out of the 392 business
>> > and
>> >
>> > gone completely over to 427 Windsors now:
>> >
>> > http://www.fordracingparts.com/crateengine/main.asp#tfo
>> >
>> > I've heard enough bad things about Ford crate motors from people who
>> have
>> > had them, that I would never get one.   They are absolutely fine for
>> street
>> > rods and things like that, or even for a Pantera that will only be
>> driven
>> > on
>> > the street, but for a Pantera that would see track duty (abuse) as mine
>> > does, there's just too much likelihood that something would let go....
>> >
>> > Mike
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