Big block chevy 3906648 piston identify
 

I have a complete set of OEM 3906648 pistons I'm trying to identify to put up for sale. No numbers stamped on top. It has TRW on the bottoms and the 3906648 cast next to it. Appear to be standard bore 427 L88 or ZL1 pistons. Very Nice condition and set up as full floaters on rods. Can anyone confirm this? Thanks and happy Easter.

I’ll check my books later today, but Jason did post this a while back, FYI:

https://www.yenko.net/forum/showthre...hlight=3906648

Cheers,
Anthony

Hi again Ron, I don't see it in my book; maybe it's the casting number rather than part number? Google seems to support that it's an L88 slug though...

So these are very rare pistons then. I did find that same ebay piston set that 427 king has for sale. Mine have the same numbers inside the piston. I found it after I posted here. Anyone have any idea what they are worth? All 8 I have are in excellent condition with rings on them too. I'm not going to used them on anything I have. I'm going to put them up for sale.