need pistons
IIRC, they're to use HF rings too.
They were to be available around now, maybe Mr. Nutter can post?
From what i'm gathering from OP, you want to spray 300hp on stock rods?
The Pro Tru pt124 series piston is the result and they are on the shelf. They are available in all the common ls1,ls2, iron bock, and ls3 bore sizes. They have the factory pin diameter and will drop in at .004 positive deck. We gave them a small .090 tall 4cc dome to bump compression into the mid 11:1 range and fit all L92/LS3 and cathedral port chambers. Wiseco multifit pockets accomodate cathedral or L92/LS3 valve locations and don't cost us more. We do our forgings in house so 2618 doesn't cost us much more to utilize here. We compensate for Non-offset pins by using skirt profiles that minimize cold piston rock. Ring lands are very beefy with a .280 top and .175 2nd. Ring technology is a huge price difference, so we went withs our 1/16 ductile, 1/16, 3mm HF ring packs rather than our new GFX Nitride Steel/Napiers. Darn good rings...not state of the art, but hassle free-good sealing rings.
There were a couple areas that we needed to maintain despite higher production costs; internal skirt milling operations keep them light to take stress off the o.e. rods and skirt coatings are included.
All in all, it knocks about $125 off the price of Wisecos. Coupled with the cost of rods, that's going to save some people $600 on their next engine build.

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The Pro Tru pt124 series piston is the result and they are on the shelf. They are available in all the common ls1,ls2, iron bock, and ls3 bore sizes. They have the factory pin diameter and will drop in at .004 positive deck. We gave them a small .090 tall 4cc dome to bump compression into the mid 11:1 range and fit all L92/LS3 and cathedral port chambers. Wiseco multifit pockets accomodate cathedral or L92/LS3 valve locations and don't cost us more. We do our forgings in house so 2618 doesn't cost us much more to utilize here. We compensate for Non-offset pins by using skirt profiles that minimize cold piston rock. Ring lands are very beefy with a .280 top and .175 2nd. Ring technology is a huge price difference, so we went withs our 1/16 ductile, 1/16, 3mm HF ring packs rather than our new GFX Nitride Steel/Napiers. Darn good rings...not state of the art, but hassle free-good sealing rings.
There were a couple areas that we needed to maintain despite higher production costs; internal skirt milling operations keep them light to take stress off the o.e. rods and skirt coatings are included.
All in all, it knocks about $125 off the price of Wisecos. Coupled with the cost of rods, that's going to save some people $600 on their next engine build.
What would the comp ratio be with the 70cc chamber?
Could'nt find the info on the website.
Thanks,
Mike
Last edited by LongIsland63SS409; Jul 11, 2010 at 05:51 PM.
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