Block Curiosity
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
Not sure if there are better blocks but some of the newer engines have powdered metal rods. The NBS forums have pictures of the carnage from pushing the PMR's too far so you may want to steer clear of them if you are building a bullet. 
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Hotshot
Joined: Oct 2003
Posts: 17,791
Likes: 99
From: Ashland City, TN
Well. I'm not 100% sure on the differences between the block years, but there were at least 4 or 5 castings just for the OBS If I recall it correctly.
But I wouldn't want to pass up a deal on a SD block if it was usable or better.
But I wouldn't want to pass up a deal on a SD block if it was usable or better.
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
Here's some reading for ya....maybe you've seen this before but..........
TheDieselStop.Com - www.thedieselstop.com
Cover Page pictures from hobbies & interests photos on webshots
TheDieselStop.Com - www.thedieselstop.com
Cover Page pictures from hobbies & interests photos on webshots
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Hotshot
Joined: Oct 2003
Posts: 17,791
Likes: 99
From: Ashland City, TN
I doubt i'm going to be that picky, but all the info is helpful.
Its so much easier having a block and a truck to take the block to the machine shop with ya know?
Get the block work done and pull my motor and start swapping parts.
Its so much easier having a block and a truck to take the block to the machine shop with ya know?
Get the block work done and pull my motor and start swapping parts.
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Hotshot
Joined: Oct 2003
Posts: 17,791
Likes: 99
From: Ashland City, TN
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Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
The general concensus is that the OBS block is less likely to crack. A '96 or '97 block. Think I'd rather have a '97 block if I was looking.
IIRC the survey done by PHP confirmed this. Also IIRC the '99 models showed more broken blocks than others. Probably due to bad tuning due to the split year and tuners not having the proper PCM code. Unfortunately we no longer have access to the PHP survey to confirm what I think I remember. LOL
IIRC the survey done by PHP confirmed this. Also IIRC the '99 models showed more broken blocks than others. Probably due to bad tuning due to the split year and tuners not having the proper PCM code. Unfortunately we no longer have access to the PHP survey to confirm what I think I remember. LOL
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Fleet Mechanic
Joined: Mar 2007
Posts: 1,808
Likes: 0
From: Meigs County Ohio
Th eblocks in OBS 94.5-96 are spouse to be the strongest ones. Cause they were cast heavier then as the block evolved it was lightened up and not so thick. Oh oh oh gett a stroker kit for it!!!!!
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
Also there is no such thing as a stroker kit for us nor do I think it'd help us much..
Elder User
Joined: Nov 2005
Posts: 733
Likes: 2
Not exactly true... The later blocks actually got thicker in the valley area.. Also, the '94.5-'95 blocks did not have bracing in the lifter galley areas like the '96+ blocks, so I'd have to assume they are not quite as stiff.
Also there is no such thing as a stroker kit for us nor do I think it'd help us much..
Also there is no such thing as a stroker kit for us nor do I think it'd help us much..
Weld and offset grind?
no... bad idea. Don't do that, don't even think of doing that...
Fleet Mechanic
Joined: Mar 2007
Posts: 1,808
Likes: 0
From: Meigs County Ohio
What you want for the other ZF5 tranny?? =D
And the stroker kit actually was mentioned out of curiosity cause they make a 427 kit for the 6.6 D-Max, and i dont see how it couldnt help us any. Stroker kits are known for adding more low end torque... But for the money one would be it would probably only be a 'last thing to get last little amount'
And the stroker kit actually was mentioned out of curiosity cause they make a 427 kit for the 6.6 D-Max, and i dont see how it couldnt help us any. Stroker kits are known for adding more low end torque... But for the money one would be it would probably only be a 'last thing to get last little amount'