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Memories Of The Old GM And Its Cars

383 messages,  Last post on Nov 12, 2009 at 5:33 PM

You are in the Automotive News & Views Forum. Your Hosts are steve_ & claires

What is this discussion about? Chevrolet, Cadillac, Buick, Classic Cars


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#178 of 383
Re: GM motors of late 70's [andre1969] by zaken1
Jun 07, 2009 (8:39 pm)
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Replying to: andre1969 (Jun 07, 2009 12:07 pm)

Thanks for the additional information. My best friend in High School was the son of a Dodge Dealer. So we spent many nights cruising around in his 1956 Dodge D500, (on which the solid lifters made significant noise until the engine was fully warmed up) and later in his 1957 Plymouth Fury (on which he had installed the dual quad manifold). The mechanics at the dealership were highly motivated to make his cars as fast as possible, and I eagerly followed everything they did. We also did lots of legal and illegal drag racing in those cars. So I came to appreciate the advantages of Mopar engineering.
 
I bought my '57 Dodge in 1966. I had a job as a service technician for burglar and fire alarm systems; and was often driving long distances; so I needed a car that would be reliable. The car was a bread and butter 4 door sedan; I think it was a Coronet. It had the 325 poly engine with a Stromberg WW 2 barrel carb, single exhaust and 2 speed Powerflite transmission. I couldn't afford to make it look nice; but I put a lot of work into the mechanicals. Freshened the motor with a ring and valve job; along with a set of anti pump up hydraulic lifters. Bought 4 new Michelin tires, Monroe HD shocks, installed a noticeable but not obnoxious dual exhaust system, assembled and installed one of the early model CDI ignitions; I think it was a Heathkit (I used to be able to quote all those names and models; but after 43 years, I don't remember it all anymore) and a Mallory coil. Then bought a Stromberg jet wrench (which I still have) and a Mallory adjustable pressure electric fuel pump; and began blueprinting the tuning. Eventually got it up to 21mpg. But the car looked like a beater.
 
One day, a CHP car stopped me as I went through the toll plaza on the Golden Gate Bridge. The officer had spotted the crack in my windshield. He walked up to me and began looking over the car. He noticed the brand new Michelins, and then saw the fire extinguisher mounted in the passenger footwell. At that, he turned to me and said "I saw the crack in your windshield; but I can see now that the car is well maintained; so I'm not going to make an issue of it. Drive carefully, and have a nice day!!!" And he drove away. That left me with a good feeling.
#179 of 383
Re: plastic gears [dave8697] by dieselone
Jun 07, 2009 (8:42 pm)
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Replying to: dave8697 (Jun 06, 2009 5:08 pm)

The 4.0 Aurora had a cut out switch to prevent trying to start a motor that was already running. They made them too quiet.
 
Heck, my wife's 01 Impala with the crappy 3.4 had that feature. I figured they put it in their because the clientele was loosing their hearing. LOL. The 3.4 was hardly refined. I believe my wife's current '07 GP with the 3800 v6 has the same feature. I can't remember because I try my best never to drive it. IMO, you'd have to be deaf and numb all over to not realize it' running.
#180 of 383
Re: Buy a Cadillac DTS... [dave8697] by tlong
Jun 07, 2009 (9:46 pm)
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Replying to: dave8697 (Jun 07, 2009 7:05 pm)

Thanks for the added info. I wonder if there is some formula for oil consumption which might be a function of displacement and average rpm or something like that?
#181 of 383
Re: Buy a Cadillac DTS... [tlong] by dieselone
Jun 08, 2009 (5:21 am)
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Replying to: tlong (Jun 07, 2009 9:46 pm)

Thanks for the added info. I wonder if there is some formula for oil consumption which might be a function of displacement and average rpm or something like that?
 
For me it's been all over the map. I've had engines big and small, low revving and high revving that have and have not used oil. The worst was a '92 Saturn SL2 that burned about a 1qt every 500 miles after 60k miles and Saturn said it was normal.
 
My first car was a '75 Buick Regal with a 350, my grandpa bought it new and gave it to me in '87. It used a qt every 1,000 miles since it was new. It still lasted well over 130k. Trans was heading south when I got rid of it.
 
I had a '98 Ford SVT Contour which had a DOHC 2.5L 195hp v6 that would easily rev to it's 7200rpm fuel cut off. It never used a drop of oil over the 75k miles I put on it and I beat that car using it in many SCCA Solo II competitions and such.
 
The '03 305 v8 in our boat has never used any oil either and you'll be hard pressed to find a harsher environment for a car engine (basically a car engine with a few marine spec parts). It's spent many hours running 1/2 to full throttle at 3k - 5k rpm.
 
I had a '95 Neon with the DOHC 150hp 2.0L 4cylinder that also would rev to 7k rpm and it would occasionally use a qt per oil change interval, never a big deal. I'd have to add a qt occasionally to my 5.3 powered Suburban, primarily if I had been towing the camper or boat a lot in hot weather. The 5.4 in my Expedition has yet to use any oil at 51k miles.
 
I think the owners manual in every vehicle I've owned has stated some oil consumption is considered normal. It probably comes down to variation in the manufacturing process. Some will some won't I guess unless it's a Northstar and then it's considered a normal side effect of it's exotic machining process or whatever...LOL
#182 of 383
Re: Buy a Cadillac DTS... [dieselone] by isellhondas
Jun 08, 2009 (5:58 am)
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Replying to: dieselone (Jun 08, 2009 5:21 am)

I don't understand why it's a big deal to add a quart of oil once in awhile.
 
I've had a couple of Mazda RX-7's and they need to burn some oil. I know that I had to watch the oil level and add a quart about once every 1000 miles.
 
If I had a Northstar I would do the same thing. Not a big deal.
 
With our Hondas, I rarely check the oil level between changes and I guess I should in case they decide to start using a bit of oil.
#183 of 383
Re: Buy a Cadillac DTS... [isellhondas] by xrunner2
Jun 08, 2009 (6:51 am)
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Replying to: isellhondas (Jun 08, 2009 5:58 am)

I don't understand why it's a big deal to add a quart of oil once in awhile.
 
Many years/decades ago, that was the norm, the expectation. In my own experience with GM vehicles with V8's in the 70's, 80's, 90's, adding oil was not questioned.
 
Starting in 1984 with first Honda, I was pleasantly surprised that it did not need any oil additions to crankcase between changes. That has been my experience with many Hondas and Acuras (and Nissan) since then.
 
The Japanese auto builders had refined the engineering of their engines to have attributes of good power, reliability and no (or extremely low) oil consumption between changes.I recall the sales brochure of my 97 Maxima extolling the advanced engineering features of their engine including a term, if I recall, micro fine finishing on all interior engine and component touching surfaces.
 
Apparently, GM was incapable of engineering a Northstar engine without having to use a quart of oil every 1k-1.5k from what I hear.
 
Imagine if norm was "burning" one quart of oil every 1k miles for every vehicle manufactured today. What a waste of petroleum resource, not to mention added pollution.
#184 of 383
Re: Buy a Cadillac DTS... [isellhondas] by dieselone
Jun 08, 2009 (6:54 am)
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Replying to: isellhondas (Jun 08, 2009 5:58 am)

It's not a big deal IMO.
#185 of 383
Re: plastic gears [tomcatt630] by lemko
Jun 08, 2009 (6:55 am)
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Replying to: tomcatt630 (Jun 06, 2009 2:52 pm)

but people have better things to do with their time than baby their cars.
 
They do? I can't think of anything better!
#186 of 383
Re: Buy a Cadillac DTS... [cadillacmike] by lemko
Jun 08, 2009 (6:57 am)
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Replying to: cadillacmike (Jun 07, 2009 8:07 am)

Also, the Northstar holds more oil: 8 qts vs. the usual 5.
#187 of 383
Re: Buy a Cadillac DTS... [steve_] by lemko
Jun 08, 2009 (7:00 am)
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Replying to: steve_ (Jun 07, 2009 10:43 am)

Wow. If this is Harley Earl's personal 'Vette, he'd have been 71 years-old when it was new! Go, Grandpa, go!

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