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11-29-2014, 11:05 PM
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#1 |
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Senior Member
 
Join Date: Aug 2014
Location: Sandy, Oregon
Posts: 2,376
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A couple questions
Hey guys, I have been tearing apart the front end of my truck and along the way have run into a few things that have got me stumped. First off, there is a large upper case M stamped on the top side of my transmission. Does this stand for something and what is it there for? Second, what color would the transmission pan on a th350 be? It is blue right now but would like to know the factory color because the truck is being restored to original. Third, are there and if so where are the casting number for the heads located? Couldn't find any tonight while searching for them with my dad. Thanks
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My dad always says that HEI distributers are pointless... •1972 Custom/10 Deluxe. My first truck and I've had it since I was 7. Tilt, tach, AM/FM, 350, deep dish rally's, original paint and an increasing amount of NOS jewelry. It's always taking my money.. •1967 c10 with tach, dropped 3/5 on deep dish rally's •1972 Cheyenne Super. Sold |
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11-29-2014, 11:17 PM
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#2 |
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Registered User
Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,843
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Re: A couple questions
Youll have to take off the valve covers to see the head #s.
No color on the trans pan that i know of. Aircraft stripper aughta do it M? A tranny guys gonna have to answer that one
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1967custom |
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11-30-2014, 04:35 PM
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#3 |
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Senior Member
Join Date: Aug 2014
Location: Sandy, Oregon
Posts: 2,376
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Re: A couple questions
Here is a picture of the transmission.
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My dad always says that HEI distributers are pointless... •1972 Custom/10 Deluxe. My first truck and I've had it since I was 7. Tilt, tach, AM/FM, 350, deep dish rally's, original paint and an increasing amount of NOS jewelry. It's always taking my money.. •1967 c10 with tach, dropped 3/5 on deep dish rally's •1972 Cheyenne Super. Sold |
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12-01-2014, 11:30 PM
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#4 |
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Senior Member
Join Date: Aug 2014
Location: Sandy, Oregon
Posts: 2,376
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Re: A couple questions
Bump. Anybody got any info on this M?
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My dad always says that HEI distributers are pointless... •1972 Custom/10 Deluxe. My first truck and I've had it since I was 7. Tilt, tach, AM/FM, 350, deep dish rally's, original paint and an increasing amount of NOS jewelry. It's always taking my money.. •1967 c10 with tach, dropped 3/5 on deep dish rally's •1972 Cheyenne Super. Sold |
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12-02-2014, 12:29 AM
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#5 |
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Registered User
Join Date: Apr 2014
Location: Eugene, OR
Posts: 51
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Re: A couple questions
I have seen a ton of chevy trans and never seen a marking like that! Also from Oregon, about 80 miles south.
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12-02-2014, 12:52 AM
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#6 |
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Registered User
Join Date: May 2014
Location: Manteca, Ca.
Posts: 274
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Re: A couple questions
Looks like someone scratched it on with a putty knife, unless it is painted on. If it is painted on it might be one from an auto wreckers and that would be how they would have marked it for a warranty?
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Terry Soon to be retired and moving to Bristol, TN. |
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12-02-2014, 01:11 AM
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#7 |
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Senior Member
Join Date: Aug 2014
Location: Sandy, Oregon
Posts: 2,376
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Re: A couple questions
It is the original transmission and that M is a raised imprint on the transmision. I scraped the top layer or grease and grime off so you could see it better.
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My dad always says that HEI distributers are pointless... •1972 Custom/10 Deluxe. My first truck and I've had it since I was 7. Tilt, tach, AM/FM, 350, deep dish rally's, original paint and an increasing amount of NOS jewelry. It's always taking my money.. •1967 c10 with tach, dropped 3/5 on deep dish rally's •1972 Cheyenne Super. Sold |
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12-02-2014, 03:26 AM
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#8 |
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Registered User
Join Date: Feb 2009
Location: Norcal, CA
Posts: 169
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Re: A couple questions
GM did mark 4x4 automatic transmission cases with a cast in K
Maybe there is a similar reason for noting these M cases....? |
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12-02-2014, 05:05 PM
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#9 |
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Registered User
Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
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Re: A couple questions
turbo 350 trans pans were not painted "bare metal"
the casting numbers are under the valve covers right in the middle of the heads date codes are futher towards the ends of the heads under the valve covers
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68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive |
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