Need help with head PN ID
Thread Starter
Staging Lane
Joined: Mar 2002
Posts: 80
Likes: 0
From: Waterford, MI
Need help with head PN ID I am looking to purchase a pair of ported LS1 or LS6 heads that are claimed to be 40 hp increase over stock LS6 01 heads. I have a part number and a cast number and would like to know if they are LS1 or LS6 heads.
PN 12562274
Cast number 12564243
I know for a fact these are prototype heads from spring 2000 that GM had ported to see what it would take to increase hp by 40. Thanks in advance JT
PN 12562274
Cast number 12564243
I know for a fact these are prototype heads from spring 2000 that GM had ported to see what it would take to increase hp by 40. Thanks in advance JT
