In article <468d8dc0$0$4668$4c368faf@[EMAIL PROTECTED]
>, keng2
<keng2@[EMAIL PROTECTED]
> wrote:
> "CobraJet" <shedding@[EMAIL PROTECTED]
> wrote in message
> news:050720071151066311%shedding@[EMAIL PROTECTED]
> > In article <468d190e$0$24690$4c368faf@[EMAIL PROTECTED]
>, keng2
> > <keng2@[EMAIL PROTECTED]
> wrote:
> >
> >> "CobraJet" <shedding@[EMAIL PROTECTED]
> wrote in message
> >> news:030720071930240861%shedding@[EMAIL PROTECTED]
> >> > In article <468ac63f$0$31226$4c368faf@[EMAIL PROTECTED]
>, keng2
> >> > <keng2@[EMAIL PROTECTED]
> wrote:
> >> >
> >> >> "CobraJet" <shedding@[EMAIL PROTECTED]
> wrote in message
> >> >> news:010720071107477176%shedding@[EMAIL PROTECTED]
> >> >> > In article <4687e148$0$8951$4c368faf@[EMAIL PROTECTED]
>, keng2
> >> >> > <keng2@[EMAIL PROTECTED]
> wrote:
> >> >> >
> >> >> >> I have a 67 390 Mustang with smog heads and I'm planning on
> >> >> >> changing
> >> >> >> them
> >> >> >> and eliminating the smog pump etc which is not working
> >> >> >> anyways...I'd
> >> >> >> like
> >> >> >> to
> >> >> >> have the heads all ready to swap when I do the job.I've seen 61
> >> >> >> large
> >> >> >> ****t
> >> >> >> heads and 68 heads advertised on ebay.What would be
> >> >> >> recommended??Would
> >> >> >> it
> >> >> >> be
> >> >> >> better to rework and plug the existing heads??
> >> >> >> Thanks-KenG
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >
> >> >> > Is this engine stock? Are you trying to increase power? Which
> >> >> > intake
> >> >> > and exhaust do you have on it? The ****ts and chambers are not
cast
> >> >> > any
> >> >> > differently just because the air injector holes are drilled.
Thus,
> >> >> > there really is no such thing as a "smog" head for an FE. If the
> >> >> > heads
> >> >> > are original to the car (C7AE-A), you'd be better off just
putting
> >> >> > plugs in the holes and doing whatever else they need.
> >> >> >
> >> >> > --
> >> >> > CobraJet
> >> >>
> >> >> Thanks
> >> >> The engine is all stock original (not GT) and I'm not looking for
more
> >> >> hp..( it gets about 9 mi/gal now.) I think it makes good sense to
keep
> >> >> the
> >> >> numbers the same even if it takes some time to wait for a machine
shop
> >> >> to
> >> >> do
> >> >> it's work.
> >> >> KenG
> >> >
> >> > Well, it can't be "stock original" and not be a GT engine. What
is
> >> > the fifth digit of the VIN? A properly tuned 390 should be getting
> >> > better than 9 mpg in a light car. Are any of the exhaust manifold
bolts
> >> > at an angle to the ****t, or are they all up and down? How many
bolts?
> >> >
> >> > --
> >> > CobraJet
> >> Hi
> >> It's an "S" code vin and not a GTA or GT. It has a 4V Holley. The
exhaust
> >> manifold has 2 holes(1 up, one down) per ****t, 8 holes each.
> >> Ken
> >>
> >>
> >
> > The "S" is a 390 GT engine. It is the only 390 available in a '67
> > Mustang. The exhaust manifolds are wrong for a shock tower car
> > (Mustang, Fairlane). They use 14-bolt GT manifolds designed to
> > facilitate spark plug access. The log manifolds you have now are from
a
> > Galaxie, T-Bird, or truck, and are probably right up against the
> > towers.
> >
> > You have a non-original engine (or at least the heads), and possibly
> > a non-S-code car that had a VIN swapped. There is a process we can go
> > through to verify things. Ultimately, a Marti re****t is the key, but
if
> > the VIN is wrong for the car, it is no help. Tell me if you want me to
> > help, but the pace needs to be picked up a little. Also, it would be
> > good if you can upload pics somewhere.
> >
> > --
> > CobraJet
> \Hi and thanx for the enlightenment. I've been looking at so many
manifold
> and head pictures on ebay that I began to think that mine looked like
them ?
> This time I really looked and the manifolds are apparently GT or at
least
> not 2 bolt/****t vertically opposed as they really have horizontal
opposed
> bolts(the visable ones) but the heads have an upper bare unused threaded
> "boss" probably for the non GT manifold.which makes it difficult to
access
> the plugs if they weren't already blocked by the smog tubes.Thanks for
> saving me from buying the wrong heads on ebay!!
> I paid a "professional" years ago to jack up the engine to change the
plugs
> and remove blown manifold gaskets that didn't need to be installed in
the
> first place and found out months later that he didn't put a board under
the
> pan and subsequently trashed it. I checked the vin on the fender and
it's
> 7R01S--- and the door plate is the same and the the registration is the
> same. The one on the fender has a very deep stamped "S" which could be
> suspicious??? The cast engravings on the intake manifold are C6AE 425-6.
> Where else should I look for #'s? Does that seem suspicious for a 67
> vehicle?? I know that the engine was worked on as years ago(many) soon
after
> purchase my son and I had to disassemble the engine to replace worn
> misaligned cam bearings/cam causing low oil pressure.I would be glad to
send
> you pictures but have to get my son over with his digital camera.What
> pictures would U need??
> KenG
None yet, as you are making an effort to fill in the blanks. Too
often people ask for help while only giving 10% of the story. So this
is a coupe with no GT equipment, other than the engine? The next is to
try and line up the date codes. What are the rest of the codes on the
door tag? The engine block has a date code that you can see on a flat
spot near the oil filter adapter from "under" the car. The intake
manifold will have a date code. The cylinder heads will have a casting
number between the middle plugs, and date codes cast in the rocker area
under the valve covers. With the right combo of u-joints and
extensions, you do not have to jack up the engine to change plugs. If
the sump of the oil pan is caved in, it could be restricting flow into
the pump pickup.
I do believe that the GT engine is a separate option from a GT
equipment package in '67. ThunderS**** #15 may verify this if he reads
it.
--
CobraJet
|
