LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

rods and pistons for LE heads and cam

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Old 06-27-2008, 04:30 PM
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rods and pistons for LE heads and cam

I wanted to beef up my shortblock while it's out of the car getting new rings and bearings so what would you guys recommend for le1 heads and le1.6cam?

I beam or H beam forge rods? 5.7" or 6.0" stroke?
forged pistons? what brands?

stock compression or close to it

Last edited by luckyou03; 06-27-2008 at 04:34 PM.
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Old 06-27-2008, 05:15 PM
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I'd go 6.000 h beam rod and some flat top pistons.. The I beam I think require a different cam to clear.. And 6.000 rod needs a piston made for the longer rod I believe..
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Old 06-27-2008, 07:28 PM
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Originally Posted by Meen95z
I'd go 6.000 h beam rod and some flat top pistons.. The I beam I think require a different cam to clear.. And 6.000 rod needs a piston made for the longer rod I believe..
Yup, you must match rod lenght with piston.

To the thread starter, what do you plan on doing with the car? Spraying or just normal NA use?
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Old 06-27-2008, 08:34 PM
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look into compstar rods but since you are using a le product why not just call and ask him?
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Old 06-27-2008, 09:12 PM
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Also, don’t be afraid to run some compression. With flat-tops (no dish), 54cc chambers, zero deck-height and a .039” head-gasket you’ll have 12.0+-1 static, which will be much less dynamic.

WD
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Old 06-27-2008, 10:59 PM
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Originally Posted by luckyou03
I wanted to beef up my shortblock while it's out of the car getting new rings and bearings so what would you guys recommend for le1 heads and le1.6cam?

I beam or H beam forge rods? 5.7" or 6.0" stroke?
forged pistons? what brands?

stock compression or close to it
If you're going to remain N/A then stock rods/pistons will work just fine.
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Old 06-27-2008, 11:26 PM
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I have an LE package and I am using 6" rods with good results. Not sure whatb the specs are on a 1.6 cam but you cant go wrong with Lloyds stuff.
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Old 06-27-2008, 11:33 PM
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Why does everyone insist on running heavy H-beam rods, when a lighter I-beam is a much better choice?

Scat Pro-series I beam - best bang for the buck rod on the market.
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Old 06-27-2008, 11:41 PM
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Originally Posted by MachinistOne
Why does everyone insist on running heavy H-beam rods, when a lighter I-beam is a much better choice?

Scat Pro-series I beam - best bang for the buck rod on the market.
That's what I got.
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Old 06-28-2008, 04:16 AM
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It's a NA motor just le1 heads and le1.6 cam. I just thought it would be a good idea to upgrade. No NOS or boost. If stock is ok than cool, I will just add ARP bolts to everthing.
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Old 06-28-2008, 08:56 AM
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cheapest way out for a 6400 RPM N/A engine is to reuse stock rods with good ARP bolts, stock crank and some of the TRW L 2256 pistons (.030 over). The stock pistons are WAY down in the hole and that kills compression and quench. If you have the budget, get some aftermarket pistons and just focus on good machine work.

It will live at that RPM and HP level forever.

Focus on quench and compression. measure the deck ht once it is all back together and use a head gasket that gives you a .030-.035 quench. Probably gonna need some .026" Mr Gasket 5716 heads gaskets to get there assuming the piston ends up .004-.010 in the hole at TDC.

Lloyd Elliott
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Elliottsportworks.com
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Old 06-29-2008, 01:15 AM
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ok thanks Lloyd
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Old 06-29-2008, 02:36 AM
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I'm having problems finding TRW L 2256 pistons, can you give me a part number for and equal forged piston like I can get at summitracing? thanks
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Old 06-29-2008, 09:32 AM
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yep, here ya go. . . . . . .

http://store.summitracing.com/partde...0&autoview=sku

Lloyd Elliott
972-617-5671
Elliottsportworks.com
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Old 06-29-2008, 12:07 PM
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Originally Posted by NightTrain66
Focus on quench and compression. measure the deck ht once it is all back together and use a head gasket that gives you a .030-.035 quench. Probably gonna need some .026" Mr Gasket 5716 heads gaskets to get there assuming the piston ends up .004-.010 in the hole at TDC.
Tightening quench is beneficial for making power and preventing detonation, but you have to make sure everything is right. If you don't know what your doing, pay someone who does. The results of naively playing with those types of tolerances can be disasterous.
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