Changing Manifolds

[flattie39]

I have a 69 C10 short/step with an inline 250. I'm in the process of swapping the original intake/exhaust manifolds for a 4bbl Offy intake and a 12 Bolt split exhaust manifold. At both ends of the head, there are pilot pins to hold the stock exhaust manifold in the proper position while bolting it in place. My question is: Are those two pins screwed into the head or pressed in? I don't want to risk breaking one off if they're pressed in. Thanks,
Ken

[AussieinNC]

Last two heads I did both had the pins screwed in...just use a pair of vice grips to grip the pin and undo it as if it is a bolt.

[flattie39]

Thanks Aussie - That's what I wanted to hear.
Ken

[flattie39]

Aussie - I tried the vise grip suggestion and couldn't get them to turn, so I used a short pipe wrench and that did the trick. Thanks again for your response.
Ken

[AussieinNC]

Originally Posted by flattie39

Aussie - I tried the vise grip suggestion and couldn't get them to turn, so I used a short pipe wrench and that did the trick. Thanks again for your response.
Ken

Yep, sometimes they have never been out....I have had one set someone used red loctite on the pins....they took some work but they eventually came out...

Glad ya got em out