Changing from 4:10s to 3:42's... trade me

[George C]

not necessary true, as the weight of the truck and depending on the rpms where the 342s land the truck it may be lugging which will cause worse mpg. best fuel economy is usually around 1800-2100 rpms crusing

ive gotten better mpg with 410s vs my 373s in the past

[silverado00]

alright you have me talked out of it,,, last time people on here talked me out of welding my rear end, man i wish i would of listen,, 1,200 dollar tires wasted and well yea very exspenive trial, im 21 so im hard headed,, Quik... i see your boosting,,, im ditching the procharger soon, and i want sts turbo, but considering waiting till i drop a 6.0l i first since the 5.3l is pushing 218,000 miles,, looks like your very knowledgable on boost,, i read through some of your other post,, ill have to get with you if i find my self confused,, but for the most part ive delt with it quite a bit, i boosted a 408 couple weeks ago,,