1970 Cutlass Supreme 4 speed - ClassicOldsmobile.com

1970 Cutlass Supreme 4 speed

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Old November 7th, 2018, 08:57 AM
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1970 Cutlass Supreme 4 speed

This summer I had the pleasure of acquiring a 1970 Cutlass Supreme with a factory 4 speed manual transmission from the original owner. I work with the son of the original owner, which is how I found out about it. The original owner ordered it in September of Ď69 and it was assembled in the 1st week of October 1969 at the Lansing, Michigan plant. He ordered a Cutlass Supreme because the insurance premiums were much cheaper than a 442 and he also liked the notchback roofline. The Sherwood green Olds was ordered with only a few options. It has the standard 4 barrel 350 (QV code) and was optioned with the M20 4 speed transmission with hurst shifter, G91 3.23:1 open rear (SE code), PO5 Super Stock 1 wheels (all 5 are date coded), D55 center console, C08 vinyl top, and U63 AM push button radio. It has manual steering and brakes. It has the protect-o-plate, owners manual and original title. I was hoping for the window sticker or sales invoice, as well, but those were commonly discarded back in the day. Being a Lansing car, there is no build sheet. Car is numbers matching, including the carb, distributor and many other components. The radiator and alternator are the main two components the are not original. Iím very pleased to have stumbled into a great car with with a great story that I could actually afford to buy!

Last edited by 70CS4speed; November 7th, 2018 at 09:10 AM.
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Old November 7th, 2018, 09:32 AM
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1970 Cutlass Supreme 4 speed

Well, congratulations on your purchase and welcome to the forum. A wealth of knowledge in this forum. We like pictures, cowl tag picture etc. These people can answer a lot of questions. It's fun to see a legit Cutlass with a 4-speed.
Thanks for joining and posting.

Wayne
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Old November 7th, 2018, 09:49 AM
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pictures please

Welcome

Without pictures this never happened.....I'll wait.
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Old November 7th, 2018, 10:06 AM
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Very cool, I have owned 2 70 Supremes with 4 speeds. I would love another one someday.

Pat
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Old November 7th, 2018, 10:13 AM
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Old November 7th, 2018, 10:17 AM
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I’ve started cleaning it up. I’ll slowly replace the parts store ignition and cooling system tune up parts with period correct items. I’ll be on the hunt I for a correct radiator and 37 amp alternator as well.
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Old November 7th, 2018, 10:23 AM
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Old November 7th, 2018, 10:31 AM
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Very nice and unusual. The dark green looks good with the contrasting white too and interior.
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Old November 7th, 2018, 12:22 PM
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more pics

Can we see some pictures of the car not just the parts. Looks good so far.
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Old November 7th, 2018, 12:57 PM
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Originally Posted by 70CS4speed View Post
Is that the fuel line going around to the drivers side of the air cleaner?
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Old November 7th, 2018, 01:20 PM
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That is part of the PCV system.
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Old November 7th, 2018, 01:33 PM
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That's what I thought, but the angle of the picture makes it look like the rubber hose is connected to the metal fuel line.
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Old November 7th, 2018, 01:36 PM
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Great find! Once I get my V Code site updated and running again, I'd love to add your car to the 350 4 speed Supremes section.
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Old November 7th, 2018, 01:39 PM
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Old November 7th, 2018, 01:51 PM
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Originally Posted by vette442 View Post
Great find! Once I get my V Code site updated and running again, I'd love to add your car to the 350 4 speed Supremes section.
Terry
Terry, how many 350 4 speed supremes have you documented?

Pat
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Old November 7th, 2018, 01:53 PM
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Very nice, congrats and welcome to the site.
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Old November 7th, 2018, 02:01 PM
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Good looking car and in really good condition. Thats the kind of car many of us would like to come across. Welcome.
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Old November 7th, 2018, 03:27 PM
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According to the GM heritage center, Oldsmobile produced 679 M20 wide ratio 4 speed equipped Cutlass Supremes and 203 M21 close ratio 4 speed equipped Supremes for the 1970 model year. Those numbers include both hardtops and convertibles. They don’t have a breakdown of how many of each. I’m curious what the survival rate is. I would love to see some of the others that are floating around out there.
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Old November 7th, 2018, 03:36 PM
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Welcome to the group... Nice looking Cutlass Supreme...
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Old November 7th, 2018, 05:51 PM
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Thumbs up 4SPD Cutlass

Beautiful Olds this will be a fun car.Looks great.
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Old November 7th, 2018, 05:59 PM
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Originally Posted by 70CS4speed View Post
According to the GM heritage center, Oldsmobile produced 679 M20 wide ratio 4 speed equipped Cutlass Supremes and 203 M21 close ratio 4 speed equipped Supremes for the 1970 model year. Those numbers include both hardtops and convertibles. They donít have a breakdown of how many of each. Iím curious what the survival rate is. I would love to see some of the others that are floating around out there.
Wow, that is not many. I have owned one of each myself. I had one with a close ratio and 391's over 30 years ago. Gold with a gold vinyl top, buckets console gauges dual mirrors and sport suspension. Drove that for a year or two and sold it. It was pretty rusty and I bet it was parted out many years ago.391's sucked on the highway. That was a very quick car!

My second one I restored and made into the SX that never came from the factory. Was maroon with a black vinyl top, a/c buckets console. wide ratio. I painted it red, took off the vinyl top and changed the gears to 3;42. A good friend of mine still has it. In retrospect I wish I would have left it all original. I always liked the supreme body style better and liked 4 speeds. Of course they never made a 1970 supreme with a 4 speed and a 455, which was my dream.

Where did you get that info on production #'s ?

Pat



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Old November 7th, 2018, 06:36 PM
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What a find and what a nice car. This one is a keeper. Welcome to the site. Good folks here.
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Old November 7th, 2018, 06:49 PM
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I emailed the GM heritage center and provided the VIN, looking for whatever info they had. They provided those production numbers for 4 speed cars.
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Old November 7th, 2018, 07:06 PM
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Nice car. Your battery cable should be attached to the valve cover clip between the PCV valve and carb.
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Old November 7th, 2018, 07:33 PM
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Originally Posted by 70CS4speed View Post
I emailed the GM heritage center and provided the VIN, looking for whatever info they had. They provided those production numbers for 4 speed cars.
That is really cool. I did not know that type of info was available. Will you post what they sent you? would you PM me or post the email you sent to? I would like to see what they know about 4-speed Rallye 350's.

Thanks!

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Old November 7th, 2018, 08:46 PM
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Originally Posted by fasteddy View Post
Terry, how many 350 4 speed supremes have you documented?

Pat
For 1970, about a dozen convertibles and only a couple hardtops have surfaced since I stared the registry in 2001 or so. One was actually a gold hardtop since you mentioned that you had one in rough shape. I have a few of each tracked for 1971, and maybe 20 total for 1972. I pulled the registry site down for major updates or I could look and see exactly how many, but the numbers that have turned up are pretty small, especially for 1971 and 1972 hardtops. Here's a letter about 1970 M21 convertibles that I had on the site:



Terry

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Old November 7th, 2018, 08:55 PM
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Originally Posted by vette442 View Post
For 1970, about a dozen convertibles and only a couple hardtops have surfaced since I stared the registry in 2001 or so. One was actually a gold hardtop since you mentioned that you had one in rough shape.
Here's the gold one, on this very forum site:

https://classicoldsmobile.com/forums...s-supreme.html

Terry
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Old November 7th, 2018, 08:57 PM
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Originally Posted by vette442 View Post
For 1970, about a dozen convertibles and only a couple hardtops have surfaced since I stared the registry in 2001 or so. One was actually a gold hardtop since you mentioned that you had one in rough shape. I have a few of each tracked for 1971, and maybe 20 total for 1972. I pulled the registry site down for major updates or I could look and see exactly how many, but the numbers that have turned up are pretty small, especially for 1971 and 1972 hardtops. Here's a letter about 1970 M21 convertibles that I had on the site:



Terry
I still have the part of the title from the gold one. VIN 342570m291678

Is that the same one?

Pat
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Old November 7th, 2018, 09:29 PM
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COOL CAR

The week before I purchased my V code supreme there was a green 1970 supreme convert for sale in plymouth.. M21 350 with years of winters salt rust on it.I looked at it BUT did not even bother driving it around the block... Original owner has since sold that car...
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Old November 8th, 2018, 05:37 AM
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I own this one and am in the process of frame off. Luckily I have all the original parts down to the carb, manifolds, everything. Hopefully I'll have it done by 2020.

Not sure how to turn it the right way
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Old November 8th, 2018, 07:24 AM
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Thumbs up

Originally Posted by 1970greensupreme View Post
I own this one and am in the process of frame off. Luckily I have all the original parts down to the carb, manifolds, everything. Hopefully I'll have it done by 2020.

Not sure how to turn it the right way
Your car is one I would love to own myself. If you ever get sick of the project in a year or two let me know.

Did your car come with the 7040253 Carb? What was the build date?

Pat
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Old November 8th, 2018, 06:18 PM
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it was the 4th week of May and I believe the carb is model 7043253
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