silverado_lover said:
4.30 rear gear means nothing if you don't look at the transmission ratios.
Tundra has a 3.333 1st ratio paired to 4.30, final drive ratio in 1st is 14.33. Chevy w/ 8 speed (4.56 1st) & 3.42 rear gear has a final drive of 15.59 in 1st. The cheby has a greater mechanical advantage.
Final drive ratios are the reason I run a 4.56 gear on a 29" tire and trans w/ 2.48 first gear.
It means a lot if you want to reduce load on transmission.