Thread: High Compression 400 sbc
View Single Post
Old 10-31-2008, 03:01 PM
  #4  
zipper06
Senior Member
RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
Posts: 2,890
Default
We fill the block up to the bottom of the water pump inlet with hard block and use total seal rings. Leakdown is still within 2 to 3%. I'm sure that an after market block will seal better, but it's what works for us.

Zip.
zipper06 is offline  
Reply