Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - I'm doing A 400 rebuild
View Single Post
  #4 (permalink)  
Old 01-20-2013, 12:50 PM
lhmurphy's Avatar
lhmurphy lhmurphy is offline
Registered User
Join Date: Dec 2012
Location: Indiana
Posts: 187
Wiki Edits: 0

Thanks: 34
Thanked 8 Times in 7 Posts
Originally Posted by cmb8065 View Post
I'm rebuilding a 400 ci sb. The heads were cracked and I have a good rebuilt set of 350 heads. They don't have the small steam holes like the 400s. Is there any way I can modify them to fit the 400 block? I have a friend who owns a machine shop and can do about any kind of machine work. Any info will be greatly appreciated. Thank you.
I'm currently running a 406 sbc, my cylinder heads were too thick to drill out the steam holes and I didn't find not having them to hurt anything...I talked to some local guys who have a lot of experience with 400s and they have never had any overheating issues or any issues not using the steam holes...If you can have them drilled for cheap, personally I would do it just bc GM did.

Last edited by lhmurphy; 01-20-2013 at 01:05 PM.
Reply With Quote