DART505

iTrader: (2)

Looking at a 6.0 stamped aluminum block ,heads and was looking to find more info on these being I do not know what it came out of. How do you figure what year it is? Wanted to find out if one year or application was stronger than another if building one from scratch.It is going in a F body so I wanted to know if the front cover would interchange being this cover has a hole in the center for some sort of cam sensor or dod crap. Plan on building a NA 600 rwhp out of it so was looking for the weak points. If you were going to Darton sleve a LS block would it be better to do this one or a 5.7 LS one?How do you tell what is a LS 2,3 L whatever engines these are?
Will my Jesel rocker setup from a cathedrial port LS1 heads work on these square port heads?
Thanks for the direction!
Chris

v8pwr

iTrader: (19)

Sounds like an LS2 block . I don't remember the casting #'s but take a look @ the back of the block on the driver's side . You should see an 8 digit casting # . The hole in the timing cover is for the cam sensor . GM moved it from the back of the cam to the cam sprocket . I'm not aware of there being a rectangle port head on a 6.0 aluminum block but it wouldn't surprise me . These late model blocks are very strong and are more affordable to sleeve than LS1 blocks . The LS1 blocks are a wet sleeve design so you have limited choices whereas the LS2 and later aluminum blocks are a dry sleeve design and have a few more options for sleeving . The dry sleeve will handle your build without issue . You could look @ an LS3 block, stroke it, and put one of the small bore LS7 or TFS heads on it and hit your goal . Your cathedral port Jesel rockers will not work on rectangle port heads so you'll have to sell them to me cheap

DART505

iTrader: (2)

Good start and thanks for the info! I figured that as soon as I started piling parts for a build I would outgrow them before the assembly started.
I have both engines so did not know what one to do?

NemeSS

iTrader: (127)

The only 6.0 that came with l92 rectangle heads is called a ly6 but block is iron.

DART505

iTrader: (2)

I will get the casting # on the heads.

veee8

iTrader: (40)

L76 from the G8 GT's are aluminum 6.0 with rectangle heads.

DART505

iTrader: (2)

Head casting #5364 and block #071582004 if that helps.
Thanks!
Chris

v8pwr

iTrader: (19)

I forgot about the L76 . The casting # is wrong, it should only have 8 digits .

Randy WS6

iTrader: (69)

Ive been running the 6.0L LS2 aluminum block for over 5 years now ,with a .030" over bore (4.030") stock sleeves ,418cid. with a 250 shot of nitrous and never have any problems, Now im building a LS3 6.2L .025"over bore (4.090") 431cid. cant wait to see how it holds up.

odarabla

iTrader: (1)

This is not true. The later G8's came with a 6.0 aluminum block with L76 intake and L92 heads.

odarabla

iTrader: (1)

hahahaha Damn you beat me to it!!