Intake Manifold tight end bolts.

[Rusty76]

Today I installed the valley pan gasket and tightened down the manifold.
After I managed to get all bolts hand tight I started to tighten from the middle and crossing over as I worked my way to the ends. Once I got to the end bolts which are into the block it was way to hard to screw 2 of them down. I was way over spec and stopped. Currently they sit a little proud and the washer spins freely.
Need another full turn. What to do? Leave them, tap holes, pull out the cheater bar and get it done? Thanks!
image1 by , on Flickr

[Ristow]

run a tap thru and try. or get shorter bolts. do not force them in you will crack something or break em off.

[babywag]

Did you verify length was correct on replacement bolts?
Agree with Ristow do NOT ever force bolts.

[Rusty76]

Total tunnel vision. Didn't even think about smaller bolt. I did think to maybe stack a couple washers? Anyway I picked up smaller bolt and should work thanks!

Also something I forgot to do. A guy should probably put anti seize on these bolt?
Also I've read about people putting a little rtv on the bolt to prevent fliuds from leaking. What do you think?

Thanks. HAve a nice weekend.

[Ristow]

blind holes,nothing to leak thru. anti seize is fine.

[Rusty76]

Perfect thanks. I will take one out at a time and give her a little anti seize.