97s10ondubs

Whats your opinion on how to keep this from happening again. I had another thread about different gaskets to use already. Still dont know what to do. But anyways, how do you think this happened, detonation?

http://putfile.com/pic.php?pic=2/3716322044.jpg&s=x11

http://putfile.com/pic.php?pic=2/3716324079.jpg&s=x11

http://putfile.com/pic.php?pic=2/3716325736.jpg&s=x11

http://putfile.com/pic.php?pic=2/3716331197.jpg&s=x11

FastZinTennessee

Did the car ever overheat?

Best things you can do to prevent that from happening- Have the heads milled to make sure they are completely flat, make sure you torque the head bolts down in the correct procedure and torque spec, and keep the temperature of the motor from getting too hot.

When I blew a headgasket I replaced them both with a new set of F-car LT1 GM gaskets, new GM head bolts and was very careful about the whole thing. After that the radiator clogged and overheated the car really bad a few times. The block cracked and upon teardown the headgaskets were still holding.

97s10ondubs

Yea, it overheated the night before it happened. I initially thought it was that, but the car had trouble starting the week before, one time the week before it made a loud clunk and wouldnt start, i tried again and it started. Well this time i went to start and it just went clunk, clunk, and it was hydrolocked. I think it had a small leak and the overheating just pushed it over the edge.

97s10ondubs

This is my second time putting these heads on a motor, first time i didnt have a problem, but i also used gm gaskets. This time i used the felpros.

1racerdude

What kind of head bolts and what torque?

matLT1

Was there anything put on the threads to keep antifreeze from creeping up?

97s10ondubs

Sorry i havent been getting notified of replies, anyways, i used ARP sealent like i always do, along with arp bolts at 75lbs.

Digital Designs

LT1 head torque is 65ftlbs...... you could have split the gasket if the head wasnt completely flat

97s10ondubs

^arp specs said 75 w/ thread sealent....

1racerdude

Ya got a power adder?

97s10ondubs

soon to be spraying 200-300, so yea...

1racerdude

That being the case something must be warped. I would check the head and block with a streight edge to see what's up.

97s10ondubs

yea, gonna have the heads checked tommarow, i guess im gonna have to get a machinist straight edge and check the block myself....

97s10ondubs

Welp, the other side was blown too, didnt even know it. It has two holes in it, on the #3. They look exactly the same as the other one, coming from the bolt holes.