Use a phenolic spacer. (wood) And, maybe try a heat shield. This ethanol gas seems to boil quicker in the heat. Here in FL, our gas is said to be E10. It is more like E15 - E20. I hate it, not a fan of it at all.
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1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu COPO L72/M20/12 bolt 3.31 posi
1968 Malibu LQ9/4L80E/12 bolt 3.73 posi
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