Looking for a picture and the difference of the LB7 and the later style pistons.

[malibu795]

Are the 300k pistons cast or forged? Thanks

Mine are race cast with 17.5:1CR
They can be had with either moly rings or stainless rings.. pros and cons to both.
Take what I say with a grain of salt.. when I reference something it's generally on 50-100k mile intervals..
And the truck dragged a 25,000-29,000lb trailer for 500-650 miles a day 5-6 days a week at a dynod 400/800 tune for 4 years roughly.

 

[ikeG]

I question the efficacy of delipping these pistons, personally, when the correct injector and timing is being used. I'd much rather have more complete combustion with the eddy created by the lip utilizing the correct flow and spray angle of the injector, than building the engine knowing I'm reducing the combustion efficiency even a few percent.

Turns out the Wagler "delipped" pistons have .010 taken off the top and are not delipped. This is their standard off the shelf piston but you can order them any way you want. I ended up having 2 lml short blocks here at 1 time to do. One of them was totally stock, used the 224-3935 set in it. The other was a callies crank, Wagler piston, etc mild upgrade engine. So I measured both bowls and then asked wagler what was up.

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[Chevy1925]

Turns out the Wagler "delipped" pistons have .010 taken off the top and are not delipped. This is their standard off the shelf piston but you can order them any way you want. I ended up having 2 lml short blocks here at 1 time to do. One of them was totally stock, used the 224-3935 set in it. The other was a callies crank, Wagler piston, etc mild upgrade engine. So I measured both bowls and then asked wagler what was up.

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why even take .010 off the top? in prep for a decked block?

 

[Bdsankey]

Turns out the Wagler "delipped" pistons have .010 taken off the top and are not delipped. This is their standard off the shelf piston but you can order them any way you want. I ended up having 2 lml short blocks here at 1 time to do. One of them was totally stock, used the 224-3935 set in it. The other was a callies crank, Wagler piston, etc mild upgrade engine. So I measured both bowls and then asked wagler what was up.

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This kind of goes back to when Wagler first released the street fighter package and advertised them with a "race" piston that was delipped and had a worked over bowl when in actuality it was this off the shelf piston that had CH removed.

why even take .010 off the top? in prep for a decked block?

I'm wondering if it's to mimic a race cast piston as they are 0.010" removed off CH direct from Mahle? This is speculation/guessing on my end so I hope nobody takes it as gospel.