LS1 vs. LS6
10-31-2005, 04:16 AM
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LS1 vs. LS6 What are the differences between the LS1 and LS6 heads? I know the valves are lighter, and the intake is slightly enlarged from a 2.0 to a 2.02 but what is the difference in the ACTUAL CASTING. Also, is there a difference in the LS1 castings between themselves, 4.8 vs 5.3 vs 6.0 head casting? Answers to these questions would greatly help me. Thanx 
10-31-2005, 04:30 AM
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The z06 and the 6.0 heads have the same intake and exhaust ports and runners. And they flow MUCH better then all the other stock heads. I think the valves are the same in them all as far as size but i may be wrong. The 5.3 heads and the z06 heads have smaller CC chambers. Teh ls1 is begger and the 6.0 is biggest. GL man
John
John
