My pistons were flat.......
#11
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Thread Starter
hrm.....this is making the LQ4 and LQ9 less and less different
but it also has me worried about these LS1 heads I put on.....10.8:1 is ALOT higher than I was counting on, I'm not too sure I want to run 10.8:1 with 91 octane (that's ALL I can get in Cali/Nevada)
but it also has me worried about these LS1 heads I put on.....10.8:1 is ALOT higher than I was counting on, I'm not too sure I want to run 10.8:1 with 91 octane (that's ALL I can get in Cali/Nevada)
#15
? ? ? ? ? ?
iTrader: (16)
Yelo - if its running well and not pinging under loads, I wouldn't worry about the compression. Worst case, a good tune will fix it up. With flat tops, you'll benefit from a tighter quench, which will fight off detonation.
LQ9 got revised pistons with coated skirt and stronger connecting rods.
LQ9 on left, 01 LQ4 on right
LQ9 got revised pistons with coated skirt and stronger connecting rods.
LQ9 on left, 01 LQ4 on right
#16
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Thread Starter
Yeah.....it runs fine.....I'm gonna get it tuned next week to combat the idle and warm-start issues I'm having but otherwise it's fine.....
I was just suprised to see a flat-top piston in a non-HO 6.0...that would make it the same stock compression as the LQ9
I was just suprised to see a flat-top piston in a non-HO 6.0...that would make it the same stock compression as the LQ9
#18
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Originally Posted by BigTex
Thats assuming the chambers on the iron heads were the same size and the piston deck height is the same.
#19
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Originally Posted by BigTex
Yelo - if its running well and not pinging under loads, I wouldn't worry about the compression. Worst case, a good tune will fix it up. With flat tops, you'll benefit from a tighter quench, which will fight off detonation.
LQ9 got revised pistons with coated skirt and stronger connecting rods.
LQ9 on left, 01 LQ4 on right
LQ9 got revised pistons with coated skirt and stronger connecting rods.
LQ9 on left, 01 LQ4 on right