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  #1  
Old 04-15-2013, 01:59 PM
Red454sedgwick Red454sedgwick is online now
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is There any diffrence between 96 and 02 7.3 block and crank

I have a 02 with a rod knocking and 96 engain that floated the valves, Can I use the 96 to fix the 02?

Second what is a 7.3 block and crank worth?
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Old 04-15-2013, 02:03 PM
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You can get a set of rods for reasonable. I would recommend getting new forged rods. And there is only a difference in the front covers.. but for the life of me I cannot remember what specifically that it.

I believe I sold a sleeved block/crank/cam that was ready for a hone for $500.
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Old 04-15-2013, 02:04 PM
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The blocks and crankshafts are different between those years.
Here are a couple of files that explain the differences.
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File Type: pdf Short Block Changes 444 diesel.pdf (168.5 KB, 41 views)
File Type: pdf pg 43 Serial number reference.pdf (12.3 KB, 33 views)
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Old 04-15-2013, 02:09 PM
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Well then.. guess i'm the jack@ss.. thanks for the info greg
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Old 04-15-2013, 02:10 PM
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Good stuff greg...
Thanks for posting
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Old 04-15-2013, 02:15 PM
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Originally Posted by jkidd_39 View Post
Well then.. guess i'm the jack@ss.. thanks for the info greg
No biggie. It looks like a minor difference. I suppose the '96 crank will work in a newer block but the newer crank may not fit the older block. So, I guess if you keep the block and crank together then the OP will be golden.

The lifter guide style is different as well. It says the newer style crankshafts are stronger so I suppose they would be more desired.
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Old 04-15-2013, 02:23 PM
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I remember reading something about head gasket changes through years as well. I will try and find that page...


Here it is. The newer style F-250/450 gaskets will fit the older blocks so that works out. There is a thinner F-650/750 gasket that creates a higher compression ratio. This is a good way to identify a 650/750 engine at a salvage yard since the corner of the gasket will be visible (also there should be a fuel pump in the valley of the engine).
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File Type: pdf pg 47 head gaskets.pdf (33.1 KB, 17 views)
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Old 04-15-2013, 06:29 PM
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I've wondered what drove the fuel pump on the pre 99 power strokes, was it a lobe on the cam shaft? I had a 95 and remember the fuel pump being in the valley. If so the cam would be different.
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Old 04-15-2013, 06:36 PM
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Originally Posted by stinson 108-1 View Post
I've wondered what drove the fuel pump on the pre 99 power strokes, was it a lobe on the cam shaft? I had a 95 and remember the fuel pump being in the valley. If so the cam would be different.
Correct. It has a cam lobe and the valve timing is different on the F-650/750 trucks.
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File Type: pdf camshaft details.pdf (23.6 KB, 10 views)
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Old 04-15-2013, 07:21 PM
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Thanks Greg, As I said, thats something I wondered about. Didn't Know about the valve timing either.
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Old 04-15-2013, 07:56 PM
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Thanks, If the crank will bolt up to flexplate it still might work. How is the fuel pump hole in the vally pluged on the newer trucks.
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Old 04-15-2013, 08:14 PM
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Quote:
Originally Posted by Red454sedgwick View Post
Thanks, If the crank will bolt up to flexplate it still might work. How is the fuel pump hole in the vally pluged on the newer trucks.
Freeze plug
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Old 04-15-2013, 08:14 PM
 
 
 
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