oem steel rods what hp are they good to? - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 04-03-2014, 10:04 AM Thread Starter
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oem steel rods what hp are they good to?

building a short block for my 01 7.3. I'm using a 96-97 engine, I'm gonna girdle, stud& balance the bottom end. the engine will be around 550 h.p. will the stock steel rods hold up?

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post #2 of 8 Old 04-03-2014, 12:00 PM
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Are they Forged or PMR?

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post #3 of 8 Old 04-03-2014, 12:43 PM Thread Starter
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all stock 7.3 rods are forged up til early 2000-ish. so yes forged

99 f250 4x4 7.3 php tunes,20's
01 4x4 cc srw 7.3 550hp BTS trans
02 excursion LMTD 4x4 7.3
95mustang gt,86 5.0,03 gt
allis chalmers 185-d
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post #4 of 8 Old 04-03-2014, 12:48 PM
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You said its an 01 in your first post. Just wanted yo be clear which rods you were using

Then you *should* be okay at 550. But at the kind of power nothing is really safe. Some guys get them cryo'd

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Last edited by schlutzer; 04-03-2014 at 12:54 PM.
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post #5 of 8 Old 04-06-2014, 05:31 PM
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Make sure you machine the main caps all flat and line bore if your gonna put a crank girdle on it. Line bore isnt absolutely necessary, but depends on which one you go with.

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post #6 of 8 Old 04-07-2014, 07:36 AM
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I am running 600-650 on factory forged rods.The mains were line bored but no girdle. Keep in mind my truck is not abused (often)..

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post #7 of 8 Old 04-07-2014, 08:11 AM Thread Starter
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That's good info to know, I wasn't aware needing to be line bored & machining of caps for a girdle.
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post #8 of 8 Old 04-07-2014, 08:18 AM
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There are two types of girdles. One is just a plate that gets bolted to the caps. The other is a whole big billet piece that replaces the caps. Hypermax.

The caps you would think are all exactly the same height but they are not always. So you have to take a known true machinist straight edge and ckeck. If not and you bolt done a plate girdle it will distort the caps and wipe out your bearings in a hurry.

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