where to find engine code --53 block - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 4 (permalink) Old 02-09-2008, 05:31 PM Thread Starter
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where to find engine code --53 block

We got a 99 5 speed 24valve in on trade at out dealership and im intersted in buying it but can seem to find where to find the engine code to determine if its a 53 block.
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post #2 of 4 (permalink) Old 02-09-2008, 05:42 PM
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Its usually on the drivers side below the injection pump. The numbers are cast into the block and are about 1 inch tall, they usually stick out about 1/8th to a 1/4 inch. If you don't see any number there, odds are that the block was cast in Mexico. However the 53 has been known to be located else where, but I've never personally seen that, I think its pretty rare. And I believe the other place it appears is on the passengers side below where the heat exchanger would be. Below the turbo and rearward on the block. However I'm not 100% sure about that. Also, just because it is a 53 block doesn't mean that it will crack, even if its been highly modified and pushing a lot of fuel.

2000 2500 reg. cab 4x4 auto 577hp
09 6.7L QC LB stick, 4x4.

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post #3 of 4 (permalink) Old 02-09-2008, 09:27 PM
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I have a 53 block with 191,000 miles. I wouldn't worry about the crack. Chances are if it was one of the few 53 blocks with problems it would have shown by now.
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post #4 of 4 (permalink) Old 02-10-2008, 07:26 PM
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