Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Anyone know the stock compression ratio for a 1979 350 chevy ?
View Single Post
  #4 (permalink)  
Old 06-05-2012, 06:09 PM
GMCBEAST's Avatar
GMCBEAST GMCBEAST is offline
Registered User
 
Join Date: Apr 2011
Location: Kingsport, TN
Age: 33
Posts: 62
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
I agree with above, 8-8.5:1. Those 76cc heads (Most likely what you have) kill compression, throw in a dished piston and you end up on the low end of the C.R. ladder. On the good side you don't need premium gas. If they are dished pistons I think they are 18cc cups, I'm not positive though, 58cc chambers are ok with dished or most 4 valve relief flat tops but you need to pay close attention to your timing with the flat tops. Summit and Wallace Racing have a compression ratio calculator on their site's once you figure out your specs. Hope this helps.

Last edited by GMCBEAST; 06-05-2012 at 06:20 PM.
Reply With Quote