opinion on gearing

[andrewmp6]

With 35s a 4.56 gear will be close to factory ratio.If you want gas mileage go 4.11 if you want flat out power 4.88 or 5.13 gear.

[dman1982]

Originally Posted by andrewmp6

With 35s a 4.56 gear will be close to factory ratio.If you want gas mileage go 4.11 if you want flat out power 4.88 or 5.13 gear.

agree'd, but in my case i also went from 2.73's with th350 tranny, stock engine (that was tired) to a 5.3 4l60 combo, with 4.56's, so i should notice a good amount of improvement

[piecesparts]

Originally Posted by dman1982

agree'd, but in my case i also went from 2.73's with th350 tranny, stock engine (that was tired) to a 5.3 4l60 combo, with 4.56's, so i should notice a good amount of improvement

I would not plan on too much improvement. The weight of the truck, the gearing being so high and an overdrive will put that 5.3 in an RPM operating area that may too low for the power curve and the engine to operate properly.