What pistons are these?

I am looking at buying this block. The owner says the are TRW forged .020 over, but I can't find them for a 302. So if you can help me find out, that'd be great. Also, it has ARP rod bolts.

"Cylinders have no ridge and still have cross hatch markes

Also comes with all the lifters ,lifter hold downs, spider and bolts,and come with all cam bolts and cam retainer and oil pump bolts "

No cam, no oil pan, so on. $400 isn't a horrible price, considering I need to do new pistons to my 302 (86.. flat top :( darn clearance problems) and for $50 a cylinder I wouldn't be able to pay someone to do the work and buy forged pistons.

Thanks for the help!

They look like twisted wedge pistons to me, I sent an e-mail to the owner asking for a part number or something.

They look like TRW's with the part number stamped on the top of the piston in the picture.

I tried to run that number, looks like L24, but found nothing. Maybe it's LZ4, still nothing. Not that it's a big deal. I asked the owner, he just replied "Forged TRW pistons"... yea, got that much. Doesn't make a huge difference, would just like to know the details if it were possible.

Federal Mogul/TRW part number L2482F

Yea, I saw that ad. What exactly makes a twisted wedge piston a twisted wedge piston? I know they are designed to be used with twisted wedge heads, but I'm sure they would work fine with standard aftermarket heads

In reply to Baylis:

The valve reliefs are rotated to align with the valves in a TW head. Yours look like they might have the reliefs for both standard and TW heads on opposite sides, but you should check the specs on the part number to know for sure. They will have lower CR than a 2 relief piston.

Does TRW have a website? Finding a catalog isn't working

Yeah... here they are: http://www.summitracing.com/parts/trw-l2482f20

Federal Mogul bought Speed-Pro and its affiliated TRW line of pistons. They also have Sealed-power and SPD, Champion, Moog, Carter, National, Fel-Pro, Wagner, and Anco.

http://aftermarket.federalmogul.com/en-US/Brands/Speed-Pro/Pages/home.aspx#.UWYWvsrGDk0

Wow, maybe it's just the photo, but it looks like someone abused that deck with a wire brush to remove rust.
That surface DOES NOT look flat to me, notice how the edges around openings appear rounded?
I'd use a straightedge and a flashlight or laser pointer (maybe a feeler gage set ;) to make sure it's really flat.
Not saying it couldn't be decked flat, but if you intend to use that block, be sure the cost of machine work is rolled into your offer.

Yea, I've been looking at that. I haven't had a chance to drive down to tampa to look at it, definitely going to check it out. If it needs to be decked I'm going to pass, it's not such an amazing price I can't live without it. But then again, it may be the picture as well.

It looks like someone ran a power scuff pad across that engine. Including the tops of the pistons.

What happened to the center of those pistons?

That center mark is where they were aligned in a lathe to do the final machining. Usually the mark is a lot smaller, though. On some pistons, they'll machine the sides of the forged blank then machine the head and that removes the centering mark.

In reply to noddaz:

Yea, I've been looking at at that. It looks like it's going to be a long shot when I go to look at it, hoping it looks better in real life than it does in the pictures.