Want to turn a 7.3 to/past 4000rpm? - Ford Powerstroke Diesel Forum
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post #1 of 114 Old 04-14-2009, 03:55 PM Thread Starter
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Want to turn a 7.3 to/past 4000rpm?

Take a looky at my new springs. Don't worry about open/seat rates.




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post #2 of 114 Old 04-14-2009, 04:00 PM
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post #3 of 114 Old 04-14-2009, 04:03 PM
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Fancy. Are those prototype's or just 910's or what ever there called?
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post #4 of 114 Old 04-14-2009, 04:06 PM Thread Starter
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Quote:
Originally Posted by 2005F250 View Post
Fancy. Are those prototype's or just 910's or what ever there called?
910's look just like stockers...


These don't play nice on the street. Pretty much race use only.

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post #5 of 114 Old 04-14-2009, 04:08 PM
PMR = JUNK

 
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Ok, so the valve train can handle over 4000, now what about the rest of the motor?

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Quote:
Originally Posted by alberta 7.3 View Post
Yeah, I'd probably feel a bit drained after firing twice in rapid succession.
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post #6 of 114 Old 04-14-2009, 04:09 PM
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Quote:
Originally Posted by Jake View Post
Ok, so the valve train can handle over 4000, now what about the rest of the motor?

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post #7 of 114 Old 04-14-2009, 04:10 PM
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so those go over the stock springs? do you have to take the head off again?

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post #8 of 114 Old 04-14-2009, 04:16 PM Thread Starter
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Quote:
Originally Posted by Jake View Post
Ok, so the valve train can handle over 4000, now what about the rest of the motor?

Mine will.

Quote:
Originally Posted by bockhold View Post
so those go over the stock springs? do you have to take the head off again?

Completely different setup. Heads/valves have to be prepped for these. Good thing I have more than 1 set of heads laying around...

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post #9 of 114 Old 04-14-2009, 04:17 PM Thread Starter
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Give me a bit, I'm trying to clean up the rest and take a pic of all 16 together...

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post #10 of 114 Old 04-14-2009, 04:17 PM
PMR = JUNK

 
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And why don't they "play nice on the street?" I didn't know different springs made a difference.

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Quote:
Originally Posted by alberta 7.3 View Post
Yeah, I'd probably feel a bit drained after firing twice in rapid succession.
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