C5Z06 (370ci/Race Gas) vs G8GT (TT/E85) *vid*
#5
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#9
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compression like that is useful when you have a fully built race motor reving high rpm. All that compression is doing in this car is ruining its streetabilty. Thats the kind of compression that needs octane even at idle or it will ping.
#10
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Compression makes up for displacement. Lets you run a much bigger cam without sacrificing as much mid range. Compression and RPM have nothing to do with each other. That sort of compression is just fine on E85. Ive seen that compression run on E85 quite often without any issues. Race gas is over kill IMO.
#12
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Not impressed with the high compression, big cam Z06... I would be rethinking that combo...
That 4200 lb G8 just brutalized it....
Shane's white G8 is definitely the monster outta that group.... THAT car is impressive to me...
That 4200 lb G8 just brutalized it....
Shane's white G8 is definitely the monster outta that group.... THAT car is impressive to me...
#16
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Compression makes up for displacement. Lets you run a much bigger cam without sacrificing as much mid range. Compression and RPM have nothing to do with each other. That sort of compression is just fine on E85. Ive seen that compression run on E85 quite often without any issues. Race gas is over kill IMO.
Its pretty clear that the setup in this z06 isnt very good. Like HIO said, a full bolt on z06 would have done better.
#17
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I understand how that works... but once you start getting passed 11:1....you start sacrificing your ability to run on pump octane for minimal gain. That whole "jack up the compression to make up for the spongeyness of the cam that is way to big for this motor" theory doesnt work. Ive been there... ive done that on one of my numerous motors. I personally prefer 10.5-11.0 for an N/A motor. Compression is a bit over rated in the modern era. Back in the 60s... compression and cubic inch were king...
Its pretty clear that the setup in this z06 isnt very good. Like HIO said, a full bolt on z06 would have done better.
Its pretty clear that the setup in this z06 isnt very good. Like HIO said, a full bolt on z06 would have done better.
what does this G8 trap anyways?