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07-19-2011, 04:14 PM
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#1 |
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Old Skool Club
 
Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Never saw one with an M20 4-speed
Here's a '72 that is for sale on eBay. It has a 350, 4-speed (not a granny low gearbox) and a posi. All of it on the SPID. Never saw that combo before, but it would have been on my short list, back in the day. Gearshifter seems a bit much, but never saw one so never drove one to know if it is, or not.
http://cgi.ebay.com/ebaymotors/1972-...item2565d5bc3a
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Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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07-19-2011, 08:14 PM
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#2 | |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Never saw one with an M20 4-speed
Where are you getting this transmission info from?
I see nothing there except for the mention of the 4 speed itself and the wild shifter knob? Looks like the typical truck trans to me, granny low. GM didn't put those car transmissions into trucks.....and you shouldn't either. Unless you really know what you are looking at as far as 1 gear ratio...and are prepared to run a rear end gear low enough to take advantage of it, it's going to be a problem to drive.
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You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. 
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07-19-2011, 09:51 PM
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#3 |
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Registered User
Join Date: Mar 2011
Location: Almonte, Ontario, Canada
Posts: 155
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Re: Never saw one with an M20 4-speed
Friend on mine had a Muncie in a half ton.....thought he was king of the road. Not setup right, never worked right, noting but a nightmare.
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07-19-2011, 10:00 PM
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#4 |
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Registered User
Join Date: Sep 2010
Location: Los Angeles California
Posts: 352
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Re: Never saw one with an M20 4-speed
It does say M20 on the spid..
J.
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1972 Custom Deluxe Highlander C20 1971 Javelin SST New Project 1971 Demon 340 1969 SS El Camino 1968 SS RS 396 Camaro 1967 Barracuda Formula S 1965 140/4sp Corvair Monza Convertible Sorry, but I don't do Fords. |
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07-19-2011, 10:16 PM
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#5 |
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laying low
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,200
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Re: Never saw one with an M20 4-speed
Car trannys can work well in trucks. I once put a Muncie close ratio 4 sp out of an SS Nova in my 1/2 ton truck. M21 or 22. I ran that one for near 10 years with no problems at all. I didn't race it but did play with it a bunch. Spirited driving if you will.
A friend had a Muncie behind a built 396 in his 71 pkup. It ran gooooood.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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07-19-2011, 10:57 PM
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#6 |
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Registered User
Join Date: Aug 2009
Location: Alden NY
Posts: 2,705
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Re: Never saw one with an M20 4-speed
Pretty sure that is just the option code number and that it is a standard truck 4 speed. I put a muncie M 20 in my 66. Shifter for the car 4 speeds mount on the tail shaft and consequently, the shifter is right up against the seat. The shifter in that truck is out of the top of the 465 transmission as per normal.
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1961 C1 Corvette 1959 El Camino 350 TPI, 9" 4 w disc 69 Blazer K5 - sold July '20 2021 Durango RT 5.7 |
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07-19-2011, 11:13 PM
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#7 |
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Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
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Re: Never saw one with an M20 4-speed
The SPID for my truck lists 3M25GC for the granny low 4 speed. This is a 3/4 ton GMC though.
This website list the M20 as only a 4 speed...not specific as to the model http://www.outintheshop.com/options.html |
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07-19-2011, 11:33 PM
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#8 |
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Registered User
Join Date: Aug 2009
Location: Alden NY
Posts: 2,705
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Re: Never saw one with an M20 4-speed
The SPID on my 70 Burb has the M20 4 speed transmission option. It was the truck 465 transmission. That truck has the normal truck factory 4 speed in it.
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1961 C1 Corvette 1959 El Camino 350 TPI, 9" 4 w disc 69 Blazer K5 - sold July '20 2021 Durango RT 5.7 |
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07-20-2011, 12:01 AM
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#9 | |
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I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: Never saw one with an M20 4-speed
Quote:
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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07-20-2011, 12:49 AM
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#10 |
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Registered User
Join Date: Sep 2010
Location: ND
Posts: 520
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Re: Never saw one with an M20 4-speed
^^ and also my 70
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Name: Les ---------------------- Couple 80s Couple 70s One 68 
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