Re: Utica Engine Number Prefixes

Posted by HH56 On 2012/1/12 13:39:09

i am confused can anyone help me find the motor size??

The original engine size should be a 374. The number you found is probably a casting number. Factory production motor number is on a flat area on the top front of block.

Facing the engine from the front, side to side it will be in the flat space on the block in area to the right of the oil fill and close to the drivers side head in front of filter--usually about halfway between lifter valley cover edge and water pump manifold. May be faintly stamped and covered with grease. If your car has factory AC or a compressor in the normal factory space, it probably will not be visible. If engine original to car, will be the same as your vehicle number 5687-xxxx. If not the original engine, any number with the first 4 digits less than 568x such as a 564x, 566x, 567x will be a 352.

Utica numbers have been reported there and also on a vertical flange to rear side of engine below the passenger side exhaust manifold.