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Old 12-03-2009, 09:44 PM   #11 (permalink)
gracing
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Quote:
Originally Posted by Big Katz View Post
Who can you purchase LB7 pistons that are cut and coated from? I have been half heartedly looking on the internet with little to no luck finding a vendor.
Buddy at empire diesel has them
Guy at socal diesel has them
Steve at TTS has them

Looks like I will be doing either the forged or the LB7 pistons choices, choices, choices
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Old 12-04-2009, 10:53 AM   #12 (permalink)
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Was woundering if their are any pro's or cons to looking at a modified OEM piston to a aftermarket forged set, other then the obvious price differance, In my opionion why not just run the forged set if you have the cash why even look at the OEM stuff as a possibilty?
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Old 12-04-2009, 11:25 AM   #13 (permalink)
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Quote:
Originally Posted by Curt View Post
Was woundering if their are any pro's or cons to looking at a modified OEM piston to a aftermarket forged set, other then the obvious price differance, In my opionion why not just run the forged set if you have the cash why even look at the OEM stuff as a possibilty?

the forged pistons will not be nearly as daily driver friendly....they dont posses the oil cooling passages among other things to make them work well on a day to day basis
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Old 12-04-2009, 11:45 AM   #14 (permalink)
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[quote=Redbowtiesx2;3591003]lly and lbz pistons and rods are the same...


Not completely correct
04.5-05 lly pistons are the same as lb7

06 lly are the same as lbz

When i built my engine the general consensus was that delipped lb7-05 lly pistons was the to go for daily driver applications
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Old 12-04-2009, 11:52 AM   #15 (permalink)
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Quote:
Originally Posted by Redbowtiesx2 View Post
the forged pistons will not be nearly as daily driver friendly....they dont posses the oil cooling passages among other things to make them work well on a day to day basis
It's not the oiling that makes the factory cast pistons a better daily driver choice but the steel upper ring land that makes them last longer in the day to day grind. Mahle has made some inroads to help the forged pistons last by hard anodizing the top ring land for longevity but it still won't hold up like the steel insert.
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Cogito Ergo Sum....as opposed to some
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Old 12-04-2009, 11:52 AM   #16 (permalink)
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[quote=wkinsley04;3592458]
Quote:
Originally Posted by Redbowtiesx2 View Post
lly and lbz pistons and rods are the same...


Not completely correct
04.5-05 lly pistons are the same as lb7

06 lly are the same as lbz

When i built my engine the general consensus was that delipped lb7-05 lly pistons was the to go for daily driver applications

well yea everyone knows 06lly is just a detuned lbz...or at least anyone whos at the level where engine builds are coming onto mind should know that..


whether or not you have them cut or delipped is totally up to the person...the only result of doing so is a lowering of the compression ratio. some feel this is necessary to run high boost applications some feel its pointless and high CP can be kept in check with good tuning
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Old 12-04-2009, 11:53 AM   #17 (permalink)
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yep what Six-gun said as well..


BTW awesome avatar haha
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Old 12-04-2009, 12:15 PM   #18 (permalink)
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Quote:
Originally Posted by Redbowtiesx2 View Post
yep what Six-gun said as well..


BTW awesome avatar haha
That ?? Just a self portrait.
In most cases you remove the inner lip of the piston to alleviate a zone of high failure......the aluminum there is so thin that it easily turns molten at high temps and bad things start to happen. Originally that upper lip was designed to aid in emissions control.
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Old 12-07-2009, 10:54 AM   #19 (permalink)
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Awesome INFO guys thanks very much.
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- PVC REROUTE
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- LBZ MP / RDL INSTALL KIT
-Auto Meter PHANTOMS PYRO,BOOST,RAIL

- DON'T SEND A TRUCK TO DO A SIERRA'S JOB
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