View Single Post
  #6  
Old 10-03-2009, 05:29 PM
Chevy454 Chevy454 is offline
Senior Member
 
Join Date: Mar 2000
Location: Alton, MO, USA
Posts: 11,923
Thanks: 0
Thanked 8 Times in 8 Posts
Default Re: 291 Head Differences

[ QUOTE ]
Make sure they are both machined for the same style spark plug too.

[/ QUOTE ]
Also, make sure they're cast for the same size valve seat...
Reply With Quote