2016 5.7 core.

So i picked up a complete 5.7 out of a 2016 challenger.
Hydro locked and snapped a rod. Didn't touch the head or cylinder wall.
This thing is new inside i would guess less than 10k on engine.
Questions
I am replacing the rod with and earlier 5.7 rod. Are they the same weight?
I'm pressure testing the head and block. Don't know why it hydro locked. Possible bad gasket from factory?
What else should i look for?
Thx Matt

have a machine shop weigh another rod in the block compared to the replacement--also would have them check the crank--it could have a bend that you cant see by eye...

Why not just buy the correct rod and piston

Did think about the crank.

Have a used rod that is free and the piston wasn't damaged.
But it not to say that i may have to go that route if i find more damage.

even if you buy a new rod and piston the machine shop will have to weigh them to be sure it matches....then make the replacement match the original...

the earlier rods are lighter and flimsier

Ah don't tell me that!!
Guest I'm getting a piston rod combo.
I will be pressure check everything before hand.

1 what is this?

Looks like a stain. No telling from here though.
Might want to mag it to be sure and run a hone through it.

I think your correct. But im going low budget on this thing. After I pressure test the block and heads.
Who has an 09 and up 5.7 rod they want to get rid of?

You can get rods on ebay for like 30 bucks

Thx ill look.
Definitely need the newer version

Have all the rods checked. I am doing a hydro locked engine right now. It had one broke rod and two that you could see were bent. When I measured the rest I found two more bent.

There is no such thing as a budget build with a late model hemi, fukin core motors around here are $2500 still

I buy them out the junkyards here for 500 or so. Bought a 6.1 with spun rod bearing on ebay for 600, set up freight which was 85 bucks... just got to shop around.

Just pressure checked the head.
Good to go so far.

Time for a thicker piece of plexiglass.

Why don’t you get a nice cut to size piece of thick lexan. That’s what I do when I make head adaptors for my flowbench