stock 6.0 block and GM CNC LS6 heads, what cr?
10-27-2002, 12:42 AM
#2
TECH Junkie
iTrader: (1)
Join Date: Sep 2002
Location: Conroe, TX
Posts: 3,080
Likes: 0
Received 0 Likes
on
0 Posts
Re: stock 6.0 block and GM CNC LS6 heads, what cr? Well the LQ4 (Chevy/GMC) is like 9.4/9.5:1 compression, and the LQ9 (Caddy) is 10.0:1. But w/ those ported heads, im not sure what the compression would be...you could get whatever compression pistons you want tho, i bet from some place
10-27-2002, 11:10 PM
#5
Re: stock 6.0 block and GM CNC LS6 heads, what cr? umm.
Thats a little more than i was looking for <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> would like to stay close to stock, and these 2 parts looked like they might have worked good together, and fairly cost effective.
I know i could build a motor for whatever i wanted, and may do that many years down the line. But can't afford to at that time.
But is 10.8:1 alright for a daily driver? or a little too high, Florida, its hot, and 93 octane.
Ryan.
Thats a little more than i was looking for <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> would like to stay close to stock, and these 2 parts looked like they might have worked good together, and fairly cost effective.
I know i could build a motor for whatever i wanted, and may do that many years down the line. But can't afford to at that time.
But is 10.8:1 alright for a daily driver? or a little too high, Florida, its hot, and 93 octane.
Ryan.
10-27-2002, 11:22 PM
#6
TECH Addict
iTrader: (9)
Join Date: Apr 2002
Location: Texas, it's like your state, but better.
Posts: 2,085
Likes: 0
Received 0 Likes
on
0 Posts
Re: stock 6.0 block and GM CNC LS6 heads, what cr? 10.8:1 is a fine CR for the street. just dont be using that plus 89 octane. ;D 93 or better and you'll be fine. aside from that w/ the bigger bore you should be able to put down some really good numbers with that setup. happy rodding,
10-28-2002, 12:16 AM
#7
? ? ? ? ? ?
iTrader: (16)
Join Date: Nov 2001
Location: East of Dallas
Posts: 7,056
Likes: 0
Received 0 Likes
on
0 Posts
Re: stock 6.0 block and GM CNC LS6 heads, what cr? A standard 6 liter block has dished pistons and is a 9.4:1 compression. The LS6 head will be about 6 cc less than the stock heads. I didn't calculate it out, but it wont be anything near 10.8:1, probably more like 10.2:1, unless the LS6 heads have been milled. I didn't take the time to calculate it, someone will and give you an exact number.
Trending Topics
10-28-2002, 09:51 AM
#8
Re: stock 6.0 block and GM CNC LS6 heads, what cr? unfortunately, the only way the heads come CNC ported, and with valves is milled <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
you can buy a bare set, and add the valves..ect. but the 02 LS6 valves are a pretty penny when buying parts piece by piece.
Ryan
you can buy a bare set, and add the valves..ect. but the 02 LS6 valves are a pretty penny when buying parts piece by piece.
Ryan
