LS Experts --- What are these holes for??
 

I'm at a loss for remembering what bolted into these holes?

Was it just a plug for these holes in the rear of the heads?

Thanks!

Re: LS Experts --- What are these holes for??
 

Steam vent. Some years have the rear holes blocked off and just use the front others use them all.

Re: LS Experts --- What are these holes for??
 

WHat he said^^^^^^^

tube
http://paceperformance.com/i-6485108...nder-head.html

bolt
http://paceperformance.com/i-6333072...tube-bolt.html

Re: LS Experts --- What are these holes for??
 

those don't looked plugged....so your missing a piece of tubing (steel?) that connects the 2 holes or the 2 heads ...and then one side has a nipple on it for a hose to connect to the cooling system.

Re: LS Experts --- What are these holes for??
 

You guys are absolutely right --- I had plugs in these rear holes and a steam line in the front.

I found an old pic of it.

Thanks for the responses!!!

Re: LS Experts --- What are these holes for??
 

Circled