4:10s with 4k spring kit
 

My 98 has 4:10s in it. I like that my truck is really quick but gettin on the interstate im hittin 2500 rpm at 70 and im not to crazy about that. I was wonderin if i should just get some diff gears or would puttin in a 4k rpm kit help with that. ive been planing on do it regardless of that but thought it mite help. any advice would help. Also with my setup is 17* to much timing when i get it bumped?

It'll let you go faster, but 2500+ rpm is a lot for cruising. Being as your 2wd (like me) and aren't gonna be running 35"+ tires I'd go down to a set of 3.55's or even 3.31's if your buying new gears and not just swapping axles.

Gov spring won't change engine speed to road speed correlation. Like stated before it'll let you turn more rpms to go faster but won't do anything to cut your rpms down at 70 mph.


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wait a few more months, there will be replacement 5th gear out for the nv4500 that has a taller overdrive

who is producing that 5th gear? and where will i be able to get it once its out on the market?

yeah id be interested in that gear too

Hamilton Cams, talked to them last week. Said it should be out in a few months

alright sweet! do you know what kind of power it will be able to handle over a stock 5th gear?