I have seen the below quote on engine serial numbers with the breakout of forged or PM rods. I have also heard it form several sources, that some of the older blocks had thinner webs, or parts of the blocks were weaker, than other years of production. Can anyone confirm this?
So, given the serial numbers, is there a way to get the model year based on the Cast ESN and Stamped ESN on the block? (i.e. one of my blocks has a stamped esn: 74JU2U 668210, with a cast esn: 1825849(C or 0)2, with the stamped code of: XEA 25297. Anyone have a link to identify the year of the block based on engine block numbers?
Here is the engine serial number break down for the forged and powdered connecting rods. Check you engine serial number on the valve cover build sticker or you need to look at the block where the oil cooler is bolted to it .
Start of production thru 1425746 are Forged Rods
1425747 thru 1440712 are Powdered Rods
1446713 thru 1498318 are Forged Rods
1498319 thru final production run are all powdered
Or you can break them then you know what you have-Ha Ha-Just kidding
The reason for the break in serial numbers is a "test" run to be sure there were not any issues with the powdered rods. Once the process was production tested the powered rod process was used until the end of production.
Thanks, mine looks just like that - four troughs. Now, from the block serial numbers, is there anyway to tell the year it is made? Just curious. Thanks.
Thanks, mine looks just like that - four troughs. Now, from the block serial numbers, is there anyway to tell the year it is made? Just curious. Thanks.
no idea...but there are only 2 styles of blocks...according to Jonathan (the separate lifter troughs, as well as the thicker upper portion of the block (in the valley) was done for noise reduction purposes...:doh:
Closely inspect the main webbing (where the cam bearings are) for porosity (& excessive casting offset)...THAT determines whether a block is suitable for a performance build or not...
There is a triangle formed that starts at the cam bearings and spreads out following the block to form the main saddles. If there is core shift or a poor casting you will see where the saddles are offset from upper porting of the block around the cam bore. Core shift and porosity are generally found together, although you can still have a porous casting with good alignment.
There are several things to look at when choosing a block, but here is one of the first places to look.
what are you looking at precisely? :shrug:
I got under my truck yesterday and scrubbed the area off behind the oil filter and found this number VEC75505. Is this a engine serial number cause it sure does not look like any other serial numbers I seen????
oh, i see it now never mind, i swear i am just dumer than a bag of hammers
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