853 casting heads????
 

My frend has an 00' WS6, i knew he had his engine rebuilt because it blew up before, but when i was lookin over his car the other day i saw it had 853 heads on it. My 00 T/A has 241's... what exactly are 853 casting heads?

something in the way they casted them i guess is different to my understanding, see what others say.

its just the earlier ls1 heads from 98 to 00 only about 5 hp diffrence

The 853s are the same cast as a 241 jsut a different casting method. The 853s used a sand casting method where the 241s used wax or something. I forgot what the casting media is but the 241s are jsut smoother thats all. Wouldnt notice much of a difference between the 2.

241s cam on late 2000 engines through 2002 engines. IF you have the 241 heads you also have upgraded rod bolts in your bottom end. I have a late 2000 engine as well.

nice.. i got 241's my boy doesnt thoo, thats good to hear that the bottome end has the better bolts because my engine see's 6800 alot.

They are alsmost the same thing....either head ported will flow about the same