Another piston option for the 273.

It's early days the motor has not been fully pulled down yet.
My thought on the rods is I'm going to either try and order the scat rods with the smaller pin bushings or have them rebushed.
The piston catalogue lists clips so I'm guessing these are for a full floating wrist pin.
I will go full floating as it will make it easier for me whilst I'm working out what needs to be done machining wise.
The first piston will be the lab rat and pattern for the rest so fitting and removing a few times is a certainty.
I actually own a GM253 that I worked in a 1979 Holden HZ Kingswood. "A body size car"
The crank dimensions are very similar to the LA but 253 has a shorter stroke I hope the clearance for piston to weights will be fine. If not I will trim the piston skirts.

I'm at work but I will get a comparison of the GM to LA dimensions, to post.

Where I said the piston is 60thou below the deck that is the original piston on the original crank.
Just putting the rod and piston on the new crank will push the piston up to 40th below the deck.
I would be ok with that as a small quench area to be machined is no drama and the rest going into the chamber compensates for the big cc's
Because I need to rebore going straight to 40over gives me 302. 60over would give me just about a perfect 5litre. (305)
I'm happy to post pictures but it's a bit early for that.
But when I'm matching pistons and or doing the heads I will take photos. Don't hold your breath I have a lot on and this is a low priority job.
I really was just trying to awaken guys to a light at the end of the 273 tunnel.
There is another company that will cast pistons here but at over $100 each I rather use racing pistons. The manufacturer does say these racing pistons are just fine for road use.