Cracked 317s
 

Broke a piston, took the heads off found cracks between the valves on 3 cylinders

Am I retarded for considering running these? It's clear that there was no combustion leaking from the cracks. The cracks are so small it's hard to see. The only reason I found them is because I've seen it before in 317s so I was looking pretty hard.

Someone cosign my bullshit and tell me to run them. Lol

https://cimg1.ibsrv.net/gimg/ls1tech...208ff8f07c.jpg
These are my 317 heads I put back on just how u see them no issues yet I say go for it u already know the worst that can happen

I would just buy another set. Look on the sale threads here and there are sets for 200.00
317's are cheap.

Like tax man said 317's come up a lot and for a good price. Or if you don't want that call around to engine builders most builders are good at repairing heads and don't charge much for it. I damaged a set of ls3 heads and had my builder repair them pretty cheap.

you could have em pressure tested. it's cheap. junk it if it's cracked.

get yourself a shitty tig and weld em

its just more time and money.

And it seems pretty common for these heads. Ive got 2 sets here that are cracked like that, both coming off good running engines and neither set indicates there being coolant burning or combustion leaking from valve to valve.

I might be able to get my hands on some ported 241's for free. Needs a valve job and surface.

Sucks, because ,my 317's have a fresh valve job and deck, and they are really clean.

Any chance i can weld them and not have to do a valve job and deck?

you could try, but usually the seats have to come out to weld in between the bowls