Gear ratio for Turbo aplication !

[2boosted]

Help me beat some more this dead horse !

For what I read and know, lower gear ratios are a no-no for boosted aplications.

Lot of reasons here, but the one most builders tend to point out is loading the engine in order to make boost.

And the other main reason tends to be traction.

If we go to basics of 1/4 mile, we want to pass in the shortest time posible.

If we have a drag dedicated car, we will want to pass 500-1000rpm before hitting the rev limiter 1:1

Now, if we have a 4wd drag car, that has non to minimum tire spin, and because of it's weigth (4500lbs) and the resistance that all the drive line puts to the engine.....will it load the turbo?

Top this with the long 1st gear from the 80e.

And pretend the gear change is minimal, like 3.73 to 4.10

Will this gear ratio swap give lower ET's ?

[TurboMic]

i think so. I think too high of a gear is still hurting you even with boost. I love my 3.70 gears. and would not even consider going higher, I would go lower if anything. as long as it makes the desired boost, it is loading enough imo. just my .02

[CHEVROLADE]

ill sell u some 3.23s oem haha

[2boosted]

I'm still in denial !!!!

I'll wait for 04chase to swap to 3.73 from 4.11

He has some good times on 4.11 awd

Let's see if the higher gears will make a positive difference !!!!

[Beatdown Z]

Subscribed. I'm trying to figure out what gears to run in my turbo 5.3 w/80E. 4.10's combined with the 80E 's 2.48:1 first gear is equal to "3.32's" and the 60E's first gear. I just want to make sure the truck will pull a decent 60' time.

[George C]

with the 5.3 the 410s should work well

[Tarinitup1]

My truck went faster with 4.10s than 3.42. However for daily driving you can't beat the 3.42s. If it helps you any it mph 126 on 4.10 and 122 on 3.42.

[George C]

i can back that up i lost 5 mph in the 1/8 going from a 4.88 to a 4.10 the 1320 mph was the same but ET dropped greatly

My truck went faster with 4.10s than 3.42. However for daily driving you can't beat the 3.42s. If it helps you any it mph 126 on 4.10 and 122 on 3.42.

[sprayedenali]

i have 3.73s and want to go to 4.10s FWIW

[graysilverado5.3]

Im glad I already have 4.10's, hope they work well for me.