Thread: 670 heads and pump gas
View Single Post
  #12  
Old 06-22-2006, 09:47 AM
Skip Fix's Avatar
Skip Fix Skip Fix is offline
Ultimate Warrior
  
Join Date: Dec 1999
Location: Katy,TX USA
Posts: 21,711
Default
My RAIV heads on a 400 had not audible ping/detonation on the dyno, and was using muffler on it.Picked up 5-7 hp on race gas over 93 octane so HAD detonation going on.

Dish!

Reply With QuoteReply With Quote