Rearend gear size?

[pewter99]

I have a 99 scsb with the 4.3 v6 with auto trans. Also i am running a 17 inch rim with a 255/50 tire combo. Is it worth swapping out the 3.42s for a set of 4.10s?

[airdeano]

worth swapping to do what?
perform better?
better 1/8mi ET/mph?
tow better?
wearout your tires faster?
what tire was on it stock?

airdeano

[pewter99]

I had the 255/70r16 from the factory. I am wanting better out of the hole and 1/4 mile time but also managable driving on the highway. I am trying to to mods that will help me now but also preparing for a v8 swap.

[beastmode]

def go 4.10s
id also consider a converter if i were you, maybe a I6 trailblazer one

[silverado06]

what about 3.73?

[beastmode]

3.42s to 3.73s imo wouldnt be worth it. id go for the 4.10s. you should be able to cruise at like 65-70 at 2200-2300 rpms, of course dont quote me on that one lol

[DBYRD]

3.73's all the way. with 4.10's ur gas mileage goes out the door. 3.73's are an all around performer with better driveability. if u g stall ur gas mileage suffers as well. unless ur stuck on the 4.3, id look to a diff motor. if u r stuck on the 4.3 turbo it. anyway u look at it rarely does gas mileage and power go together(except with 6 speeds A/T and M/T for that matter)

[TXsilverado]

def go 4.10s
id also consider a converter if i were you, maybe a I6 trailblazer one

im not sure the TB stall would act right in a 6cyl truck.

[beastmode]

ahhh shit i never even thought of that... i was thinkin of these things stallin at 2600 for the 5.3s, i guess your right Tex... maybe just go wit a yank 2600 then

[nonecktribe]

if you are building up for a good performing v8 truck then i would get 3.73's and a good limited slip....i would wait on a stall until you have new trans and motor... after that get all cosmetics done