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Since: Feb 23, 2005
Posts: 4
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(Msg. 1) Posted: Wed Jul 19, 2006 6:32 pm
Post subject: 1979 Cadillac Fleetwood: good idea for restoration?
Archived from groups: alt>autos>cadillac, others (more info?)
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I am considering purchasing and restoring a 1979 Cadillac
Fleetwood with the 425 CI motor [fuel injected].
Some questions:
Was this a good year for the Fleetwood? I'm told by various sources
that the '79 Fleetwood is a good one.
The motor only puts out 195 HP. What would you do to tune it
for greater HP? I assume the car has only comes with one exhaust and
the thought occurs to me to put in another one. I'm
also considering going to a high-performance air filter
(K&N) and injection kit, though I doubt the latter exists.
What other recommendations can anyone offer?
What grade of motor oil would be best? I'm thinking 10W40
in MobilOne Extended Performance synthetic. Maybe 10W30?
For an engine that size and age, I'd think 5W30 and 5W20 are
too thin. (Assume car has circa 100k miles).
The car originally took HR78-15 tires.
Would this correspond to P225/75R15 now? Or P235/70R15?
What did the "H" stand for -- was it a width and if so,
what would that be in millimeters?
I assume this car took UNleaded gas in 1979. Would it
need 93 octane? Does anyone have a manual or know right
off what kind of gasoline grade it required?
I plan to run Techron (2 of the big bottles) to clean out
the fuel system before the first oil change.
Lastly, what does it typically cost to reupholster all the
seating in a big car like this (all new leather)?
Thanks in advance to anyone who can offer suggestions.
BTW: This was Lefty's car in the movie 'Donnie Brasco'
Not that that's importatnt. |
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Since: Nov 28, 2004
Posts: 103
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(Msg. 2) Posted: Thu Jul 20, 2006 12:55 am
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
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On Wed, 19 Jul 2006 18:32:35 -0400, "F. Baker" <baker.DeleteThis@deslab.mit.edu>
wrote:
>I am considering purchasing and restoring a 1979 Cadillac
>Fleetwood with the 425 CI motor [fuel injected].
Replace the word "restore" with the phrase "dump a lot of money in
to". While the '79 was and is a decent car it has almost no collector
interest. You will buy it as a $900 car and spend $5k on it so that
in the end you will have a $900 car. Not that this is a bad thing,
just don't fool yourself in to believing it will be worth something
when you get done. If you want something that will give at least some
of your money back to you look for a 50's or 60's version.
>
>Some questions:
>
>Was this a good year for the Fleetwood? I'm told by various sources
>that the '79 Fleetwood is a good one.
Other than the miserable 425 it was ok. Mid to late 70's up to the
mid 80's is a pretty sad time for engines in all American cars due to
emissions standards.
>
>The motor only puts out 195 HP. What would you do to tune it
>for greater HP? I assume the car has only comes with one exhaust and
>the thought occurs to me to put in another one. I'm
>also considering going to a high-performance air filter
>(K&N) and injection kit, though I doubt the latter exists.
>What other recommendations can anyone offer?
/
I would remove said motor and sit it to the curb for the trash
collector. Replace motor with a nice pre '72 472... Bolts right in
and gives you some actual power.
>What grade of motor oil would be best? I'm thinking 10W40
>in MobilOne Extended Performance synthetic. Maybe 10W30?
>For an engine that size and age, I'd think 5W30 and 5W20 are
>too thin. (Assume car has circa 100k miles).
>
I always used 10w40 in them. They aren't that picky... Just use what
ever the owners manual suggests.
>The car originally took HR78-15 tires.
>Would this correspond to P225/75R15 now? Or P235/70R15?
>What did the "H" stand for -- was it a width and if so,
>what would that be in millimeters?
No idea what it translates to. The 225's work well.
>
>I assume this car took UNleaded gas in 1979. Would it
>need 93 octane? Does anyone have a manual or know right
>off what kind of gasoline grade it required?
>I plan to run Techron (2 of the big bottles) to clean out
>the fuel system before the first oil change.
Regular ol' unleaded.
.. |
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Since: May 08, 2005
Posts: 721
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(Msg. 3) Posted: Thu Jul 20, 2006 1:55 am
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Since: Apr 13, 2006
Posts: 8
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(Msg. 4) Posted: Thu Jul 20, 2006 9:05 am
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
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F. Baker wrote:
> The motor only puts out 195 HP. What would you do to tune it
> for greater HP? I assume the car has only comes with one exhaust and
> the thought occurs to me to put in another one. I'm
> also considering going to a high-performance air filter
> (K&N) and injection kit, though I doubt the latter exists.
> What other recommendations can anyone offer?
It probably has restrictive intake, exhaust, and a very low-duration
camshaft. I expect that the most worthwhile change would be to change
the cam. I bet the engine's maximum output is somewhere short of 4000
RPM--its breathing is so restrictive, it's maxed out at low speeds.
I have no idea how well the EFI system would cope with a
better-breathing motor. I can tell you that the dual exhaust might
gain you a bit, and the filter will make no difference whatsoever.
> What grade of motor oil would be best? I'm thinking 10W40
> in MobilOne Extended Performance synthetic. Maybe 10W30?
> For an engine that size and age, I'd think 5W30 and 5W20 are
> too thin. (Assume car has circa 100k miles).
Look in the manual. I'd expect 10W30 would be the recommended oil.
> The car originally took HR78-15 tires.
> Would this correspond to P225/75R15 now? Or P235/70R15?
> What did the "H" stand for -- was it a width and if so,
> what would that be in millimeters?
The "H" was a load rating. The alphanumeric system indirectly implied a
width based on the load rating and profile. (My '78 Trans Am originally
came with GR70-15 tires: one load rating lower; a 225/70-15 is
basically the same size so that's what I run.)
See http://www.tireguides.com/tip5.html for the equivalent sizes. A
225/70-15 would be a bit too small for your car; the site recommends
225/75, 235/70, etc.
> I assume this car took UNleaded gas in 1979. Would it
> need 93 octane? Does anyone have a manual or know right
> off what kind of gasoline grade it required?
It should take 87 octane because that was about the only version of
unleaded available back then. (My "performance" engine, including
higher compression, still takes 87.) Note that the way octane was
rated changed some time I think in the early '80s (from RON to
[RON+MON]/2 ). If I recall, my owner's manual calls for 91-octane
unleaded; this is called 87-octane these days. >> Stay informed about: 1979 Cadillac Fleetwood: good idea for restoration? |
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Since: Mar 28, 2005
Posts: 47
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(Msg. 5) Posted: Thu Jul 20, 2006 9:30 am
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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F. Baker wrote:
> I am considering purchasing and restoring a 1979 Cadillac
> Fleetwood with the 425 CI motor [fuel injected].
>
> Some questions:
>
> Was this a good year for the Fleetwood? I'm told by various sources
> that the '79 Fleetwood is a good one.
>
> The motor only puts out 195 HP. What would you do to tune it
> for greater HP? I assume the car has only comes with one exhaust and
> the thought occurs to me to put in another one. I'm
> also considering going to a high-performance air filter
> (K&N) and injection kit, though I doubt the latter exists.
> What other recommendations can anyone offer?
I thought this was a restoration. If you want a fast car then get
something else.
>
> What grade of motor oil would be best? I'm thinking 10W40
> in MobilOne Extended Performance synthetic. Maybe 10W30?
> For an engine that size and age, I'd think 5W30 and 5W20 are
> too thin. (Assume car has circa 100k miles).
Read the owners manual and resist the temptation to use synthetic at
this late date.
>
> The car originally took HR78-15 tires.
> Would this correspond to P225/75R15 now? Or P235/70R15?
> What did the "H" stand for -- was it a width and if so,
> what would that be in millimeters?
>
> I assume this car took UNleaded gas in 1979. Would it
> need 93 octane? Does anyone have a manual or know right
> off what kind of gasoline grade it required?
Call caddy.
> I plan to run Techron (2 of the big bottles) to clean out
> the fuel system before the first oil change.
Is there a problem that you are trying to fix with this elixir? If so
I would have a mechanic look at it.
>
> Lastly, what does it typically cost to reupholster all the
> seating in a big car like this (all new leather)?
Leather,,,lotsa bucks.
>
> Thanks in advance to anyone who can offer suggestions.
This is a car with 28 years under it's belt. Chances are you will have
lots of other issues besides getting the engine to run right. How's
the rest of the drivetrain, brakes, suspension, electrical. And a
biggie, how's the body. Chances are you have some rust so have someone
give it a good going over.
>
> BTW: This was Lefty's car in the movie 'Donnie Brasco'
> Not that that's importatnt. >> Stay informed about: 1979 Cadillac Fleetwood: good idea for restoration? |
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Since: Jan 27, 2005
Posts: 46
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(Msg. 6) Posted: Thu Jul 20, 2006 2:55 pm
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Ed.Toronto.TakeThisOut@gmail.com wrote:
> It should take 87 octane because that was about the only version of
> unleaded available back then.
Amoco had 95 octane in the mid-70s. By 1979, both 89 and 93 octane were common
at nearly all stations. It was the high octane leaded fuel that was becoming
impossible to find. IIRC, unleaded fuel was just beginning to drop to 87 octane.
At that time, I had an Opel GT that would only run on the Amoco high test and a
motorcycle that ran on 89 octane but not 87. I can remember having to start
checking the rating about that time when I filled up the bike. The Opel was a
'72 model, so Amoco had been selling this grade for at least that long.
George Patterson
Coffee is only a way of stealing time that should by rights belong to
your slightly older self. >> Stay informed about: 1979 Cadillac Fleetwood: good idea for restoration? |
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Since: Dec 12, 2005
Posts: 25
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(Msg. 7) Posted: Thu Jul 20, 2006 3:45 pm
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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You might get some of your money back from wedding rentals,but is it
worth the waiting time.
Midlant
ray wrote:
> F. Baker wrote:
> > I am considering purchasing and restoring a 1979 Cadillac
> > Fleetwood with the 425 CI motor [fuel injected].
> >
>
> Do you mean restore as in restore to brand new stock condition?
> Or are you planning on modifying it?
>
> Driving it? Showing it?
>
> Building it and selling it?
>
> I'd say do it if you want to unless you're going to build it and sell
> it, because you'll never get your money back on a 79 Cadillac.
>
> If you're "rebuilding" it for fun, you can get 500 cubic inch Caddys
> that should fit and provide a lot more power. 
>
> And whatever your budget is... double it. 
>
> Ray >> Stay informed about: 1979 Cadillac Fleetwood: good idea for restoration? |
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Since: Dec 12, 2005
Posts: 25
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(Msg. 8) Posted: Thu Jul 20, 2006 3:45 pm
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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You might get some of your money back from wedding rentals,but is it
worth the waiting time.
Midlant
ray wrote:
> F. Baker wrote:
> > I am considering purchasing and restoring a 1979 Cadillac
> > Fleetwood with the 425 CI motor [fuel injected].
> >
>
> Do you mean restore as in restore to brand new stock condition?
> Or are you planning on modifying it?
>
> Driving it? Showing it?
>
> Building it and selling it?
>
> I'd say do it if you want to unless you're going to build it and sell
> it, because you'll never get your money back on a 79 Cadillac.
>
> If you're "rebuilding" it for fun, you can get 500 cubic inch Caddys
> that should fit and provide a lot more power.
>
> And whatever your budget is... double it.
>
> Ray >> Stay informed about: 1979 Cadillac Fleetwood: good idea for restoration? |
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Since: Jun 01, 2006
Posts: 3
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(Msg. 9) Posted: Thu Jul 20, 2006 3:46 pm
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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F. Baker wrote:
> I am considering purchasing and restoring a 1979 Cadillac
> Fleetwood with the 425 CI motor [fuel injected].
>
Do you mean restore as in restore to brand new stock condition?
Or are you planning on modifying it?
Driving it? Showing it?
Building it and selling it?
I'd say do it if you want to unless you're going to build it and sell
it, because you'll never get your money back on a 79 Cadillac.
If you're "rebuilding" it for fun, you can get 500 cubic inch Caddys
that should fit and provide a lot more power.
And whatever your budget is... double it.
Ray >> Stay informed about: 1979 Cadillac Fleetwood: good idea for restoration? |
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Since: Feb 22, 2006
Posts: 2
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(Msg. 10) Posted: Fri Jul 21, 2006 2:39 pm
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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ray <rollingviolation.TakeThisOut@example.com> wrote in news:JYRvg.1634$Xc7.1095
@newsfe22.lga:
>
> If you're "rebuilding" it for fun, you can get 500 cubic inch Caddys
> that should fit and provide a lot more power.
>
>
Could a 500 CI engine from a '70 or '71 Eldorado
literally fit under the '79 Fleetwood's hood and
bolt in perfectly? Without complications?
You'd be going from EFI to a carb -- don't tell me there's
no dead ends involved in that.
-The Derfer >> Stay informed about: 1979 Cadillac Fleetwood: good idea for restoration? |
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Since: Jun 01, 2006
Posts: 3
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(Msg. 11) Posted: Fri Jul 21, 2006 4:07 pm
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
Archived from groups: alt>autos>cadillac, others (more info?)
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The Derfer wrote:
> ray <rollingviolation.TakeThisOut@example.com> wrote in news:JYRvg.1634$Xc7.1095
> @newsfe22.lga:
>
>> If you're "rebuilding" it for fun, you can get 500 cubic inch Caddys
>> that should fit and provide a lot more power.
>>
>>
>
>
> Could a 500 CI engine from a '70 or '71 Eldorado
> literally fit under the '79 Fleetwood's hood and
> bolt in perfectly? Without complications?
> You'd be going from EFI to a carb -- don't tell me there's
> no dead ends involved in that.
>
> -The Derfer
from Wikipedia...
425
In 1977 Cadillac introduced a new 425 in³ (7.0 L) V8, based on the
architecture of the 472, but with a smaller, 4.08 in (103.6 mm) bore and
4.06 in (103.2 mm) stroke. The new engine was also 100 lb (45.3 kg) lighter.
The 425 was offered in L33 form, with a four-barrel carburetor,
producing 180 hp (134 kW) @ 4000 rpm and 320 ft·lbf (498.6 N-m) of
torque at 2000 rpm, and L35 with electronic fuel injection for 195 hp
(145 kW); torque was the same, but peaked at 2400 rpm.
The 425 was used through 1979 on all Cadillacs except the Seville.
So, I'm no Caddy expert, but the 500 should just "drop in" and if you're
going that far and replacing the stock FI with a big old Holley, you'd
be doing some reworking anyway.
There is no such thing as "drop in" when you're talking about work of
this depth. >> Stay informed about: 1979 Cadillac Fleetwood: good idea for restoration? |
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Since: Feb 22, 2006
Posts: 2
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(Msg. 12) Posted: Tue Jul 25, 2006 9:46 pm
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
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Since: Dec 30, 2004
Posts: 9
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(Msg. 13) Posted: Thu Jul 27, 2006 11:43 am
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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> You'd be going from EFI to a carb -- don't tell me there's
> no dead ends involved in that.
Another question is whether the original poster is subject to smog
check with a '79, and if so, what they look for.
The temptation to drop in a pre-73 engine (ahh, memories of Jerry Reed
in "The Survivors"), change the induction system and engine controls,
retrofit dual exhausts, etc., can mean trouble at registration time
even if in a technical sense it all works. Some places look just at
the tailpipe readings and how you achieve the requirement is up to you;
some perform various degrees of visual inspection; California (at
least) insists that some kinds of aftermarket upgrades be
type-certified; some don't have a smog check at all.
And even if you can get away with it where you are, you might find that
you've limited your prospects for selling the vehicle in
more-restrictive places. It also puts at risk the collector value, if
any, of the car (if you can, save *all* the old stuff and do as little
body modification as possible).
A good general rule that I offer for most people with most old cars --
do it only for your own satisfaction, hoping for but not counting on
profit or even easy saleability -- goes double for smog-relevant
systems in cars of that era.
Cautionarily,
--Joe >> Stay informed about: 1979 Cadillac Fleetwood: good idea for restoration? |
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Since: Aug 15, 2004
Posts: 8
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(Msg. 14) Posted: Sat Jul 29, 2006 1:55 am
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
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"Ad absurdum per aspera" <jtchew.DeleteThis@california.com> wrote in news:1154025793.296914.325640@i3g2000cwc.googlegroups.com:
>> You'd be going from EFI to a carb -- don't tell me there's
>> no dead ends involved in that.
>
> Another question is whether the original poster is subject to smog
> check with a '79, and if so, what they look for.
>
> The temptation to drop in a pre-73 engine (ahh, memories of Jerry Reed
> in "The Survivors"), change the induction system and engine controls,
> retrofit dual exhausts, etc., can mean trouble at registration time
> even if in a technical sense it all works. Some places look just at
> the tailpipe readings and how you achieve the requirement is up to you;
> some perform various degrees of visual inspection; California (at
> least) insists that some kinds of aftermarket upgrades be
> type-certified; some don't have a smog check at all.
>
> And even if you can get away with it where you are, you might find that
> you've limited your prospects for selling the vehicle in
> more-restrictive places. It also puts at risk the collector value, if
> any, of the car (if you can, save *all* the old stuff and do as little
> body modification as possible).
>
> A good general rule that I offer for most people with most old cars --
> do it only for your own satisfaction, hoping for but not counting on
> profit or even easy saleability -- goes double for smog-relevant
> systems in cars of that era.
>
>
> Cautionarily,
> --Joe
>
>
AMEN! Right now I wouldn't consider sinking ANY money into a '76 or later car strictly due to the Smog regs.
WCV
www.westcoastvintage.com
over 10,000 Vintage Car T-Shirt Designs. >> Stay informed about: 1979 Cadillac Fleetwood: good idea for restoration? |
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Since: Aug 08, 2006
Posts: 1
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(Msg. 15) Posted: Tue Aug 08, 2006 12:55 pm
Post subject: Re: 1979 Cadillac Fleetwood: good idea for restoration? [Login to view extended thread Info.]
Archived from groups: alt>autos>cadillac, others (more info?)
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I have a restored fleetwood and what most of the others say is true - dont
get it for the resale - you wont get much for it - if you want it for its
smooth ride then thats fine
ive put about ten grand into mine over the past years and i probably would
only get around three or four for it maybe
a 1979 fleetwood is in the guinness book of world records as having the most
mileage with no overhaul so its a pretty good motor
i saw a website where a guy turned his 79 into a drag racer - it was
interesting
good luck
"F. Baker" <baker DeleteThis @deslab.mit.edu> wrote in message
news:44beb303$0$577$b45e6eb0@senator-bedfellow.mit.edu...
>I am considering purchasing and restoring a 1979 Cadillac
> Fleetwood with the 425 CI motor [fuel injected].
>
> Some questions:
>
> Was this a good year for the Fleetwood? I'm told by various sources
> that the '79 Fleetwood is a good one.
>
> The motor only puts out 195 HP. What would you do to tune it
> for greater HP? I assume the car has only comes with one exhaust and
> the thought occurs to me to put in another one. I'm
> also considering going to a high-performance air filter
> (K&N) and injection kit, though I doubt the latter exists.
> What other recommendations can anyone offer?
>
> What grade of motor oil would be best? I'm thinking 10W40
> in MobilOne Extended Performance synthetic. Maybe 10W30?
> For an engine that size and age, I'd think 5W30 and 5W20 are
> too thin. (Assume car has circa 100k miles).
>
> The car originally took HR78-15 tires.
> Would this correspond to P225/75R15 now? Or P235/70R15?
> What did the "H" stand for -- was it a width and if so,
> what would that be in millimeters?
>
> I assume this car took UNleaded gas in 1979. Would it
> need 93 octane? Does anyone have a manual or know right
> off what kind of gasoline grade it required?
> I plan to run Techron (2 of the big bottles) to clean out
> the fuel system before the first oil change.
>
> Lastly, what does it typically cost to reupholster all the
> seating in a big car like this (all new leather)?
>
> Thanks in advance to anyone who can offer suggestions.
>
> BTW: This was Lefty's car in the movie 'Donnie Brasco'
> Not that that's importatnt.
> >> Stay informed about: 1979 Cadillac Fleetwood: good idea for restoration? |
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