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51 gmc 248 engine
#1241949 11/04/2017 5:22 PM
Joined: Aug 2016
Posts: 107
West TN
M
mcannon
Offline
Shop Shark
mcannon
Shop Shark
M Offline
Joined: Aug 2016
Posts: 107
West TN
Does anybody got a good pict. Of a 248 engine, wanting to look at the oil lines and vacacum lines. Tks. Mike
Re: 51 gmc 248 engine
mcannon #1241956 11/04/2017 6:52 PM
Joined: Jun 2012
Posts: 24
Idaho
T
tony6461 Offline
Wrench Fetcher
tony6461
Wrench Fetcher
T Offline
Joined: Jun 2012
Posts: 24
Idaho
Here's my '54 248. The large copper colored line is the fuel line, the little one is the vacuum advance and the medium one is going to the oil filter. The line feeding the rockers is painted red and against the block. Where the line for the rockers goes into the head there is a restricting orifice.
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IMG_0309.JPG (161.74 KB, 141 downloads)

Last edited by tony6461; 11/04/2017 6:57 PM.
Re: 51 gmc 248 engine
mcannon #1241957 11/04/2017 6:57 PM
Joined: Sep 2017
Posts: 135
Spavinaw/Catoosa OK
L
LeeP Offline
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LeeP
Shop Shark
L Offline
Joined: Sep 2017
Posts: 135
Spavinaw/Catoosa OK
Nice work. Was red the original color for those?

1961 ford f500
1953 3100 five window (https://www.facebook.com/1953-Chevrolet-5-window-1533405913413610/)
1955-2 3200 big window (https://www.facebook.com/Leep3200/)
55yrs as a mechanic and retired. (kind of)
Re: 51 gmc 248 engine
mcannon #1241958 11/04/2017 6:58 PM
Joined: Jun 2012
Posts: 24
Idaho
T
tony6461 Offline
Wrench Fetcher
tony6461
Wrench Fetcher
T Offline
Joined: Jun 2012
Posts: 24
Idaho
I believe they were originally raw steel except the line for the rockers, it was painted.

If you mean red for the motor, yes it was. GMC switched from Olive to Red in 1951.

Last edited by tony6461; 11/04/2017 7:04 PM.
Re: 51 gmc 248 engine
mcannon #1241967 11/04/2017 8:32 PM
Joined: Sep 2017
Posts: 135
Spavinaw/Catoosa OK
L
LeeP Offline
Shop Shark
LeeP
Shop Shark
L Offline
Joined: Sep 2017
Posts: 135
Spavinaw/Catoosa OK
Thanks, I didn't know that. You did do a nice job on that.

1961 ford f500
1953 3100 five window (https://www.facebook.com/1953-Chevrolet-5-window-1533405913413610/)
1955-2 3200 big window (https://www.facebook.com/Leep3200/)
55yrs as a mechanic and retired. (kind of)
Re: 51 gmc 248 engine
mcannon #1241971 11/04/2017 9:31 PM
Joined: Jun 2012
Posts: 24
Idaho
T
tony6461 Offline
Wrench Fetcher
tony6461
Wrench Fetcher
T Offline
Joined: Jun 2012
Posts: 24
Idaho
Thank you.
Re: 51 gmc 248 engine
mcannon #1242522 11/08/2017 12:14 PM
Joined: May 2006
Posts: 934
New Hampshire
T
tom moore Offline
'Bolter
tom moore
'Bolter
T Offline
Joined: May 2006
Posts: 934
New Hampshire
The oldgmctrucks.com website has a smal section with clear pictures showing how the oil lines are installed.

1946 GMC Project
"Back-in-the-day Restore"
Read the story in the DITY Gallery

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