1996 Heads difference
Thread Starter
Burning Brakes
Joined: Apr 2007
Posts: 1,178
Likes: 15
From: Montreal Quebec
1996 Heads difference
Did anybody know what difference are the LT4 and LT1 early and late heads have and what is the serial number sequence both have been in production?
Why do they have replace for different heads so late in the C4 production anyway?
I did a search for 10239902 LT4 early and 12555690 LT4 late with no luck...
Why do they have replace for different heads so late in the C4 production anyway?
I did a search for 10239902 LT4 early and 12555690 LT4 late with no luck...
Race Director
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
Could the difference in early and late heads be the change in rocker arms due to the early LT4 rocker arm failures and the resultant recall?
http://www.hashmarks.com/techtips/rockerarmrecall.htm
and here's lt casting numbers
http://www.bigdoggarage.com/Chevy_LT.html
I know with LT1s there are a couple of castings that are better for porting but I haven't seen anything IRT one LT4 casting being better than the other.
Mike
http://www.hashmarks.com/techtips/rockerarmrecall.htm
and here's lt casting numbers
http://www.bigdoggarage.com/Chevy_LT.html
I know with LT1s there are a couple of castings that are better for porting but I haven't seen anything IRT one LT4 casting being better than the other.
Mike
Last edited by aboatguy; Jun 2, 2013 at 03:20 PM.
Instructor
Joined: Sep 2011
Posts: 218
Likes: 5
From: Charlotte NC
