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Old 08-24-2008, 09:10 AM
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reflog reflog is offline
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fuel/pinging issue

I took the vette (427/390) out for a drive yesterday. I had filled the car with Non-Oxygenated fuel for the drive. Stepped on the accelerator and got severe pinging. I know some of you are running the 468/502's so what fuel do you use in these engines? Is your compression less than the older BB's?

My engine is not built. I has the standard 10:1 compression ratio. A little hotter cam than factory but not outlandish. The heads are stock with hardened valve seats in them. The timing is at (or should be) 6 degrees. I am looking at possibly buying some VP and adding an couple of gallons to each tank full to get the damn thing to run without pinging. Any help is appreciated.

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