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2008 L76 compression

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Old 01-19-2014, 07:31 AM
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Default 2008 L76 compression

Can anyone confirm the compression of a 2008 L76 car engine (from a G8 GT)? I have seen on here everything form 9.6:1 to 10.4: 1 I have also seen here and read elsewhere that the L76 truck is the 9.6:1 and the car is 10.4:1.
Old 01-20-2014, 01:21 AM
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Originally Posted by 5speedsteve
Can anyone confirm the compression of a 2008 L76 car engine (from a G8 GT)? I have seen on here everything form 9.6:1 to 10.4: 1 I have also seen here and read elsewhere that the L76 truck is the 9.6:1 and the car is 10.4:1.
I know the truck L76 has valve reliefs cut into the pistons and should be the lower compression of the two.
Old 01-20-2014, 08:19 AM
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I know the truck L76 has valve reliefs cut into the pistons and should be the lower compression of the two.
It's not 9.6:1 that's for sure.

LS3s are around 10.7:1 and the L76s with their valve reliefs end up around 10.4:1
Old 01-23-2014, 09:39 PM
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My 2008 L76 motor is 10.4 to 1 compression



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