Thread: 427 head questions...
View Single Post
  #2  
Old 01-18-2001, 12:18 AM
COPO COPO is offline
Yenko Contributing Member
  
Join Date: Mar 2000
Location: Atlanta, GA & the Middle East
Posts: 3,022
Thanks: 400
Thanked 376 Times in 200 Posts
Default Re: 427 head questions...
The exhaust valve is larger on the #291 heads. 1.72" vs 1.88". There were a number of COPO's built after May of '69 consequently they would likely have had #291 heads. Can't help you on the part #'s.
Reply With Quote