I got a free 5.3 engine today from a guy locally. It was blown, the block is bad. He said it was a 5.3 from his 2002 truck. I have a few casting numbers hopefully you guys will help me verify that this is a 5.3 and not a 4.8.
Block: 12567393 (says 4.8/5.3 on it)
Heads: 706
Crank: 12552218 ???
I guess the crank is the tell tale seeing that the 4.8 and 5.3 had the same bore and used the same heads but the stroke is different. The crank does say Mexico on it and the LS1/LS6 book I have says the 4.8 motors were only made in Michigan so I am thinking it is a 5.3, just hoping someone can confirm.
Also, my 02 Tahoe 5.3 has 862 heads, this motor has 706 heads, are one better than the other?? What is the difference??
Help me out if you can. Thanks.
Block: 12567393 (says 4.8/5.3 on it)
Heads: 706
Crank: 12552218 ???
I guess the crank is the tell tale seeing that the 4.8 and 5.3 had the same bore and used the same heads but the stroke is different. The crank does say Mexico on it and the LS1/LS6 book I have says the 4.8 motors were only made in Michigan so I am thinking it is a 5.3, just hoping someone can confirm.
Also, my 02 Tahoe 5.3 has 862 heads, this motor has 706 heads, are one better than the other?? What is the difference??
Help me out if you can. Thanks.