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Enginetech pistons for 6.0L

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Old 11-19-2020, 11:06 PM
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That's a bummer to hear someone say not a Silv-o-lite casting but it is what it is.

I'm in Anaheim. How about you?
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Old 11-19-2020, 11:08 PM
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Originally Posted by RedXray
I came from the SBC, BBC and AMC engine building world with a few Olds, Buick, International and Ford builds here and there. The LS is a well designed platform and for me it was an easy intuitive assembly. The only quirk compared to any other platform is the number 5 main caps odd placement. The number 5 cap stamping goes on the opposite side. An easy mistake for first time LS builders that don't remember removal or don't have a manual. The other mistake is ordering the wrong head bolts as the newer gen3 (2003+) went to an equal length head bolt... and don't forget to install the barbell lol.

I've attached the LQ9 engine manual if you decide to build it yourself.

Number 5 main cap

Thank you very much for the info, the picture and the manual! Really appreciate the help.
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Old 11-19-2020, 11:09 PM
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Originally Posted by mattt
That's a bummer to hear someone say not a Silv-o-lite casting but it is what it is.

I'm in Anaheim. How about you?
Not far from their.

You will get the most satisfaction from doing it yourself.
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Old 11-19-2020, 11:10 PM
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I was just thinking, cylinder head shops might have good leads on engine builders. Check with-

West Coast Cylinder Heads (Van Nuys, Los Angeles County) - (818) 705-5454

BPE Racing Heads (Placentia, Orange County) - (714) 572-6072

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Old 11-25-2020, 01:59 PM
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Has anyone put these on a scale? Stock replacement flat tops with no balancing required would be nice.
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Old 11-25-2020, 02:18 PM
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Originally Posted by GarrettT/A
Has anyone put these on a scale? Stock replacement flat tops with no balancing required would be nice.
I can tell you my Friend is currently running .030 over's with the Floating pin rods on a stock crank that was originally Stock pistons with the early press pin rods.

Due I personally recommend it, No. But it can and has been done.

I paid through the nose and had mine balanced for piece of mind even though it was originally a floating pin rod motor. But I also had mine decked and torque plate honed too...

I have 1 Motor in front of it to get to first before I assemble it. I am not sure if mine was decked enough to get the piston near the top or out of the deck.

On my friends motor it was .009 Down in the hole With .030 Speed Pro pistons FWIW.
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Old 11-26-2020, 06:41 PM
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Thanks Brick, I may order a set and see where I end up. Although if they end up down on the hole that much that's not ideal either, were talking half a point.
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Old 11-27-2020, 12:52 AM
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Originally Posted by GarrettT/A
Thanks Brick, I may order a set and see where I end up. Although if they end up down on the hole that much that's not ideal either, were talking half a point.
When they make replacement oversized pistons, They have to account for resurfacing and the change in bore size to maintain the factory compression ratio.

They don't take into account what we are doing.
An aftermarket replacement standard size piston may be the correct compression height. Someone would have to order one though to confirm.
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Old 12-03-2020, 04:33 AM
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The pistons are private label silvolite. Rings are private label hastings and bearings are private label king. Thats the long and short of it.
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Old 12-12-2020, 10:43 PM
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I used the 5.3 set, 2010+ with 2 valve reliefs. Was disappointed in them when I only had 15 of the 16 wrist pin clips. Engine tech basically told me to **** off and to call who I bought them from. Then I called the seller (shop) and they said **** off call engine tech. Well FML, I had to use an old GM one to complete my build.

That type of customer service has pushed me away from ever giving engine tech another penny.
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Old 12-31-2023, 06:51 PM
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Moresa Is the manufacturer for engine tech and a few other they are made in Mexico

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Old 01-02-2024, 10:16 AM
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Originally Posted by GarrettT/A
Has anyone put these on a scale? Stock replacement flat tops with no balancing required would be nice.
Late to the party, but I couldn’t find info on this when I was looking.
The flat top engine tech 6.0 pistons are 20g heavier than the floating LQ4 stockers that were in my 04 engine.
The balance shop just had to weld metal back into some of the drilled areas of the counterweights. No Mallory metal needed.
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Old 01-02-2024, 08:17 PM
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Piston/pin combo or just piston comparison? Pins can be quite a bit different also.
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Old 01-03-2024, 09:48 AM
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It was the combo. The new piston was heavier and the new pin was lighter.
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