Is runnin spray safe on the LT1
The other problem is on LT1's the back 2 cylinders can go a little lean due to the construction of the LT1 and LT4 intake manifolds. I had some evidence of detonation on my #7 plug after making a couple 100-shot passes the other day.

Here is the latest run
Number eight definately runs leaner unless you find a way to richen it up
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