Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - TUFF DAWG ENGINES/ D&J Machine?
View Single Post
  #4 (permalink)  
Old 04-03-2011, 10:38 PM
smoove smoove is offline
Registered User
Join Date: Apr 2011
Location: Tempe, AZ
Posts: 1
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I have 5000 miles on my Tuff Dawg L31 Vortec. Lifters were ping a little, but have sense been fixed with the recommended 5000 mile valve adjustment. They to install flat tappet cams in their motors so you will need add a ZDDP additive.
Reply With Quote