Change the mufflers, my choice would be the largest case Magnaflows you can fit. Or, similar-sized Dynomax UltraFlows. Do you have an X or H crossover in the system? That will help too. As will some small bullet mufflers installed in the tail pipes. All of those mods will tone it down quite a bit, but not kill power.
Just my $0.10 worth based on prior experience.
__________________
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
|