At least bigger is not better all of the time, like you said, on a 408 it
would be....
TJ
----- Original Message -----
From: "RayB" <bpracing@worldnet.att.net>
To: <dakota-truck@dakota-truck.net>
Sent: Monday, March 24, 2003 7:36 AM
Subject: RE: DML: Porting stock heads (Ray Block)
>
> > -----Original Message-----
> > From: owner-dakota-truck@bent.twistedbits.net
> > [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of
> > B1LLYW@aol.com
> >
> <snip>
> > You look at 9
> > out of 10 stock Magnum heads with any kind of miles or abuse, and
> > you will
> > find cracks. The R/T heads have more meat in critical areas. They are
a
> > sturdier head.
> >
> > Bill White
>
> You know, I've heard that but haven't seen any evidence to back it up.
Have
> you had 10 heads magnafluxed? I've just had 4 used, stock magnum heads
> magnafluxed for cracks and only one had a crack. It is small and on the
> edge of one exhaust seat. The machine shop said it's easily repairable.
> That head was off a high mileage van that died an ugly death due to lack
of
> maintenance. (the oil pickup was totally blocked by sludge) :-(
>
> According to Hughes Engines, exhaust seat cracking is not uncommon but
> typically causes no problem when it occurs while in use on your engine.
>
> I hadn't heard about the R/T heads being less prone to cracking. Can you
> point me to the documentation for that? Not that I'd use them anyway due
to
> the excess port volume and lack of velocity for a small engine. :-) I
> would use them on a 408 though.
>
> Thanks,
> RayB
> http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
>
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