Hi guys I was hoping that you guys can help me out I have a set of bare 049 bbc chevy heads that I need assembled I have all the hardware minus valve guides and need some help getting them assembled any ideas?

Crusader, 049 heads are great flowing heads. I would take the heads to your machine shop for the valve guide install. The only reason is usually they have to be heated and pressed out. I have heard of people cracking their head if its not done correctly. After that its smooth sailing. You can rent a spring compressor from a auto parts store or buy a cheapo.

I would check to see if the heads have had any valve work done already, they may require a bigger valve.
Depending on your cam you might need shims for your springs.

I have used the cheapo lever version compressor and it worked fine. Just install your rocker studs first.

Make sure you use assembly lube on the valve stems and I also coat my rockers.I always move the valve stem back and forth thru the head to make sure it moves freely. If it gets caught up you can take t wipe off assembly lube and use a piece of 1000 grit sandpaper to ''file'' the burr down.

Your rocker stud gets torqued to 50 ft lbs use oil on the bolts
Your head bolts to 75 ft lbs (long) and 65 ft lbs (short) use sealant on the bolts

Hope this helps some, I cant explain as well as performing the task.

The valve guides are not replaceable, they can be knurled or guide liners can be installed

Are you sure crew? I did a set of 781's I know they are knurled and you can have liners. But I thought that they could be pressed out and new ones could be installed. The 781 and 049 are almost identicle.

Maybe I'm wrong, maybe mine were just lined!

But I agree with crew, def. have them checked first.

BBC valve guides  ARE REPLACEABLE !    but........

1. They are tapered and can only be removed and installed one way...or you will crack the heads.

2.  The guides block the water jackets , so with that being said....I PREFER using guide liners so that you do not disturb
     the factory guide and possibly have a water problem.

3.  IMO the factory guide should only be replaced as a last resort.

               --------hope this helps-------   FORGOT TO ADD...YOU CAN MACHINE GUIDES FOR OVERSIZE VALVE STEMS 

Your welcome Crew22