Head comparision's
Head comparision's Okay I am sure this info is somewhere on this web site however I haven't found it yet.
I have a few different questions.
First, what is the difference between all the heads out there.
I see you have the 97-98 Corvette/F body heads that some say are the worst of the groupe. There is also the 99 and up LS1 heads.
Then you have 6.0 liter, 5.3 liter and 6.0 heads.
Seems like these are all nearly the same with a different compression.
I know the 6.0 are LQ9's and the 5.3's are LQ4's.The LS6 head is a LS6 head.
Same goes for the LS1 head. I see different heads being numbered like 53'cc or 77cc, what are the differences here and what head equals which number.
Also what is the compression differences between heads.
Lets just take a 2001 C5 stock makes x compression with ls1 heads. Add the 5.3 and the compression becomes ? add the LS6 heads and the compression becomes ??? or add the 6.0 and the compression becomes???
I am only looking for stock head vs stock head.
Hopefully this makes since to those reading as I didn't quite know how to ask the question.
Thanks
I have a few different questions.
First, what is the difference between all the heads out there.
I see you have the 97-98 Corvette/F body heads that some say are the worst of the groupe. There is also the 99 and up LS1 heads.
Then you have 6.0 liter, 5.3 liter and 6.0 heads.
Seems like these are all nearly the same with a different compression.
I know the 6.0 are LQ9's and the 5.3's are LQ4's.The LS6 head is a LS6 head.
Same goes for the LS1 head. I see different heads being numbered like 53'cc or 77cc, what are the differences here and what head equals which number.
Also what is the compression differences between heads.
Lets just take a 2001 C5 stock makes x compression with ls1 heads. Add the 5.3 and the compression becomes ? add the LS6 heads and the compression becomes ??? or add the 6.0 and the compression becomes???
I am only looking for stock head vs stock head.
Hopefully this makes since to those reading as I didn't quite know how to ask the question.
Thanks
Originally Posted by JZ'sTA
First, what is the difference between all the heads out there.
Originally Posted by JZ'sTA
I see you have the 97-98 Corvette/F body heads that some say are the worst of the group.
Originally Posted by JZ'sTA
Seems like these are all nearly the same with a different compression. I know the 6.0 are LQ9's and the 5.3's are LQ4's.
Check info here:
http://www.gm.com/automotive/gmpower.../apps/vehicle/
Originally Posted by JZ'sTA
The LS6 head is a LS6 head.
Same goes for the LS1 head. I see different heads being numbered like 53'cc or 77cc, what are the differences here and what head equals which number.
Also what is the compression differences between heads.
Lets just take a 2001 C5 stock makes x compression with ls1 heads. Add the 5.3 and the compression becomes ? add the LS6 heads and the compression becomes ??? or add the 6.0 and the compression becomes???
I am only looking for stock head vs stock head.
Hopefully this makes since to those reading as I didn't quite know how to ask the question.
Same goes for the LS1 head. I see different heads being numbered like 53'cc or 77cc, what are the differences here and what head equals which number.
Also what is the compression differences between heads.
Lets just take a 2001 C5 stock makes x compression with ls1 heads. Add the 5.3 and the compression becomes ? add the LS6 heads and the compression becomes ??? or add the 6.0 and the compression becomes???
I am only looking for stock head vs stock head.
Hopefully this makes since to those reading as I didn't quite know how to ask the question.
The LS1 heads are approximately 66.67cc chambered abd yield a 10.1:1 C/R.
Given your example of the 2001 C5, the stock C/R is 10.1:1 with the stock #241 LS1 heads, 11.0:1 with the #862 4.8/5.3L heads, and 10.5:1 with the #243 LS6 heads. You won't want to add the #317 6.0L heads to a stock 3.898 bore. Your C/R would be low 9s.
Thanks[/QUOTE]
