Go Back   The Supercar Registry > General Discussion > Technical & Restoration


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #3  
Old 12-10-2004, 06:55 AM
rszmjt rszmjt is offline
Senior Member
 
Join Date: Nov 2004
Location: Calgary,Alberta,Canada
Posts: 264
Thanks: 5
Thanked 117 Times in 77 Posts
Default Re: LS7 Head Info Needed

OTC Crate LS6 engine assemblys, got the cast iron OTC crate LS7 Open Chamber head installed i think mid to late 80,s . I heard that GM did this to lower the 11. to 1 Compression to around 9.6 to 1 because of piston damage because of diminishing poor fuel octane rating.
The casting number is 6272990 for the LS7 Cast Iron open chamber heads. I personaly have taken apart a few later model LS6 crate engine assemblys and they had the LS7 open chamber head.

Hope this Helps.
Reply With Quote
 


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 04:54 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.

O Garage vBulletin Plugins by Drive Thru Online, Inc.