Quick question on steam holes
Thread Starter
Drifting
Joined: Apr 2002
Posts: 1,716
Likes: 4
From: New Baden Illinois
Quick question on steam holes
I am looking at a set of sb heads that were once drilled for the steam holes to go on a 400. Once these holes are drilled, can you still use the heads for a 355 or 383?
Melting Slicks
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Yes
Yes you can, it would be wise to drill and tap for a small pipe plug. Then silicone around the plug when putting the heads on.. Make sure the plug is flush with the head surface. Simple.
Le Mans Master
Joined: Oct 2001
Posts: 5,943
Likes: 3
From: Wildwood IL
Don't need the holes for a standard 350 block. Drill & tap plugs as mentioned above is best, or tapered aluminum plugs press fitted in has also worked. Whatever plug you use, it MUST be flush with the head mount surface.
Eddie
Eddie
Drifting
Joined: Mar 2004
Posts: 1,873
Likes: 1
From: Savannah Ga
Originally Posted by dgruenke
I am looking at a set of sb heads that were once drilled for the steam holes to go on a 400. Once these holes are drilled, can you still use the heads for a 355 or 383?
Thread Starter
Drifting
Joined: Apr 2002
Posts: 1,716
Likes: 4
From: New Baden Illinois
Originally Posted by copter
Wondering why anybody would want to go that route??Please explain.I'm still learning after all these years.
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Advanced
Joined: Nov 2006
Posts: 90
Likes: 1
From: New Paris Indiana
steam holes
I have used lots of heads with steam holes on non 400 small blocks. Never plugged them, never had a problem. I used to build a lot of oval track motors and these guys loved to run 406's. Therefore, I always got a lot of drilled heads around the shop and used them on tons of different motors. I would slap em right on there if you get them.