Posted by John on Wednesday, March 10, 2004 at 11:06PM :
In Reply to: 318 question posted by John S in AK on Wednesday, March 10, 2004 at 5:10PM :
Don't know about the number, but it's easy to tell the difference between a poly and the LA. The poly has scalloped edges on the bottom or lower edge of the valve covers and two bolts on either end of the top of the valve covers that attach the covers to the head.