jay7199

iTrader: (9)

this is my buddys block, its a 99 or a 2000 ls1, he sent it too the machine shop for a vats cleaning and cam bearings and after the cleaning found this..

What do?

sjsingle1

iTrader: (1)

surface crack? or much deeper? if its surface i would say no problem

jay7199

iTrader: (9)

not 100% sure but it looks like a stress crack from not cleaning the headbolt holes before installing new heads (previous owner)

Jonsgreasemonkey

It's pretty deep. the two sides of the crack are different heights, 3/4 of a millimeter. I can see quite a ways into it, but light doesn't pass into the bolt hole or vice-versa. I'm trying to take some better pictures.

Thanks Jay.

Mako77

looks like scrap to me... Might be able to so that metal stitch technique.

jay7199

iTrader: (9)

my thought was weld it and helicoil it..

Jonsgreasemonkey

deepest spot I found was 6.3MM

Jonsgreasemonkey

I should point out that the machine shop either missed it, or failed to notify me of the crack and put my brand new clevite cam bearings in anyway.

technicalninja

iTrader: (1)

That looks like a head bolt hole. It's toast. I'd chuck it.

There was someone looking for a bad aluminum block in the classifieds to make a table out of...
You might look him up.

That's only good for furniture now!

I'd find another machine shop unless they replace the cam bearings.

I might find another machine shop anyways...

Jonsgreasemonkey

It is in the head bolt hole.

JWStevens

iTrader: (1)

It can be fixed but if you pay someone to do it the cost may not be worth it? We always use Fowler or Brodix to fix our crap.

Jonsgreasemonkey

I think I'm just going to use the 5.3 I have laying around. The ls1 was gonna go into a daily driver. I just need a running car since the cam in my 3.4 bit the dust. Any motor is going to be better than the 94hp that 3.4 put out.

bww3588

iTrader: (49)

Iron block it. I'd get some LT1 front springs to deal with the additional weight tho or it's going to be wandering all over the place.

JWStevens

iTrader: (1)

If you end up using it try a stud on that hole. It might help?

Jonsgreasemonkey

5.3 parts ordered. Now there room for some power adder later.