The Ford Barn

kool dude · 09-07-2015, 11:44 AM

have motor out of 1953 mercury truck # on head is 8rt @ cast into block on right side CIBA # stamped on right rear by intake qa10977 can any one help

rotorwrench · 09-07-2015, 03:28 PM

Mercury pickups & trucks were Canadian Manufacture and were all set up with the standard 239 CID V8 below the two largest size of trucks. C1BA indicates Canadian Manufacture. All of the 8BA family of blocks are the same from 1948 through 1953 & 54 in Canada with exception of the rotator valves beginning in 1951. USA built engines started doing away with stellite seats but most trucks kept them on the exhaust valves. Most of the casting marks on these engines only had meaning to the factory. Some are date coded by stampings on the flat surface of the intake deck but others are not. The Mercury full size and the Ford Monarch were the only Canadian vehicles to have the 4-inch crankshaft of a 255 CID.

WestCoast · 09-07-2015, 04:23 PM

8rt are truck engines, they are usually relieved for more torque, but have lower compression

1952henry · 09-07-2015, 08:38 PM

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8RTs were not relieved, at least not from the factory.

09-07-2015, 11:44 AM	#1
kool dude Junior Member Join Date: Sep 2015 Posts: 1	1953 mercury truck have motor out of 1953 mercury truck # on head is 8rt @ cast into block on right side CIBA # stamped on right rear by intake qa10977 can any one help

09-07-2015, 03:28 PM	#2
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 18,018	Re: 1953 mercury truck Mercury pickups & trucks were Canadian Manufacture and were all set up with the standard 239 CID V8 below the two largest size of trucks. C1BA indicates Canadian Manufacture. All of the 8BA family of blocks are the same from 1948 through 1953 & 54 in Canada with exception of the rotator valves beginning in 1951. USA built engines started doing away with stellite seats but most trucks kept them on the exhaust valves. Most of the casting marks on these engines only had meaning to the factory. Some are date coded by stampings on the flat surface of the intake deck but others are not. The Mercury full size and the Ford Monarch were the only Canadian vehicles to have the 4-inch crankshaft of a 255 CID.

09-07-2015, 04:23 PM	#3
WestCoast Senior Member Join Date: Sep 2014 Location: oroville calif Posts: 892	Re: 1953 mercury truck 8rt are truck engines, they are usually relieved for more torque, but have lower compression

09-07-2015, 08:38 PM	#4
1952henry Senior Member Join Date: May 2010 Location: North Dakota Posts: 1,840	Re: 1953 mercury truck Sponsored Links (Register now to hide all advertisements) 8RTs were not relieved, at least not from the factory. __________________ I dig coal, which provides motivation for EVs.