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New Engines: 557 or 572

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Old 10-17-2006, 11:00 PM
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Default Re: New Engines: 557 or 572

Felpro 1077, 32 on 114 octane. and 12lb of boost.

Last edited by GPM; 10-17-2006 at 11:08 PM.
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Old 10-17-2006, 11:06 PM
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Default Re: New Engines: 557 or 572

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6300 to 6500 with real roller lifters
What rod lenth is that, and is it the same as a Merc 900 or sterling 1050. Trying to stay with the conventional head stuff.
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Old 10-17-2006, 11:16 PM
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Default Re: New Engines: 557 or 572

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What rod lenth is that, and is it the same as a Merc 900 or sterling 1050. Trying to stay with the conventional head stuff.
6.635 is a good rod length for that combo
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Old 10-17-2006, 11:32 PM
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Default Re: New Engines: 557 or 572

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904 or bigger
those work great for us!
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Old 10-17-2006, 11:33 PM
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Default Re: New Engines: 557 or 572

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those work great for us!
That with a good Isky tool room gold stripe spring eliminates the bullsh1t 50 hour service.
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Old 10-17-2006, 11:36 PM
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Default Re: New Engines: 557 or 572

These 557s that make 1100HP went 178 hours since i built them with the big lifters and Isky springs.And they got murdered too.
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Old 10-17-2006, 11:42 PM
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Default Re: New Engines: 557 or 572

Quote:
Originally Posted by GPM
Felpro 1077, 32 on 114 octane. and 12lb of boost.
the 1077 is the mls gasket i have had good luck with them, are they leaking water or are you blowing them and if so where
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Old 10-17-2006, 11:43 PM
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Default Re: New Engines: 557 or 572

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the 1077 is the mls gasket i have had good luck with them are they leaking water or are you blowing them and if so where
Finish on the block has to be to the specs that Fel-Pro want for that gasket.It says it on the case that they come in.
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Old 10-17-2006, 11:53 PM
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Default Re: New Engines: 557 or 572

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Finish on the block has to be to the specs that Fel-Pro want for that gasket.It says it on the case that they come in.
you are right just got to hope he had that right hell i like that gasket better then the cometic
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Old 10-18-2006, 12:49 AM
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Default Re: New Engines: 557 or 572

I don't like a sq or over sq motors.the thrust angle and the big slug your trying to sling..

Remember back when the Nascar guys were destroking there motors making more power.

Also why do you think Sterling is running that cube, they have people spending $$$.I bet the experimented on a few costumers I would think they figured it by now whats the best combo, again there looking at max hp in a race application and usually have a higher RPM peek hp .I would think The bigger the ci the lower the RPM.


CI cal

http://www.itpapulling.com/ci_calc.html


http://www.ajdesigner.com/phpengine/...lacement_b.php


piston speed

http://www.csgnetwork.com/pistonspeedcalc.html

http://www.thedirtforum.com/pistoncalc.htm

rod ratio
http://www.mustang123.com/calculator...Calculator.asp
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