3.42 to 4.10
#21
#22
I have a 2001 SC1500 with 5.3 with cam heads headers and true dual 3inch tuned and performance built trans 4l60 and Circle D 3000 stall. Truck has 342 gears now and tires are 305/30/26 (pretty tall) What does anybody think best gear change would be . Thinking about 411 new posi but not sure.
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