Dumb head question.
Thread Starter
Le Mans Master
Joined: Oct 2008
Posts: 8,887
Likes: 981
From: Whitby Ont.
Dumb head question.
I am sure I know the answer, but would like to confirm. 2005 243 heads on a 2002 block,as the bore is different, will this work ? I think not. but......what do I know.
thanks
thanks
Thread Starter
Le Mans Master
Joined: Oct 2008
Posts: 8,887
Likes: 981
From: Whitby Ont.
Instructor
Joined: Sep 2006
Posts: 159
Likes: 0
From: Rantoul IL
What are you concerned about? It's the same casting, the only difference between the LS6 and LS2 head are the valves(type).
Heel & Toe
Joined: May 2011
Posts: 20
Likes: 0
The bore doesn't matter (in this example). The head chambers do not fully cover the cylinder bore, not even on stock LS1 heads.
The only time bore becomes a true factor in fitment compatibility, is when valve diameters are too big and would contact the cylinder wall at peak lift. This is why an LS3/L92 head will not fit a 346 (for example).
The 243/799 are the same head, just cast in different plants. You might find a stock LS2 with 243s, you might find one with 799s. You may even find a car with one of each, bone stock.
And whether that 243 casting came off a 2001 or a 2006 is irrelevant, it's still the same identical part.
The only time bore becomes a true factor in fitment compatibility, is when valve diameters are too big and would contact the cylinder wall at peak lift. This is why an LS3/L92 head will not fit a 346 (for example).
The 243/799 are the same head, just cast in different plants. You might find a stock LS2 with 243s, you might find one with 799s. You may even find a car with one of each, bone stock.
And whether that 243 casting came off a 2001 or a 2006 is irrelevant, it's still the same identical part.
