Has anyone done this 5th gear swap?

[96RedRunner]

I've only driven it twice since reassembling from repairs.

According to grimmjeeper calculator

Yes seat time will tell the tale on what works best.

New 5th ratio nice 600 rpm drop.

 

[Bad Luck]

I went through and looked at photos I took of speed and rpm prior/post gear swap.
Speed (MPH)/Stock 5th RPM/New 5th RPM
40/1450/1250
50/1850/1550
60/2200/1900
70/2600/2200
80/3000/2500

As you can see this swap really shines at highway/interstate speeds. I'm not sure I will notice any in town driving fuel economy gains, and I may actually get worse in town fuel economy gains because I am having to wait a little longer to shift into 5th. Time will tell if the juice was worth the squeeze for me.

 

[96RedRunner]

[MENTION=319302]Bad Luck[/MENTION], Juice worth the squeeze, I'll take some of that juice.

Holding 4th lil longer rpm's seem good fit in city traffic looking at power band.
May not effect it bad as you think, for the gains @50+ that some bang for buck
learning curve included.
Calc's 33's & 4.56's I need to check that out, :keyboard:

 

[brillo_76]

If I did that here. I think my 5th gear would be useless. Way to many ups and downs. Unless I did a v8 swap like [MENTION=318903]RandyBobandy[/MENTION] is going to do down the road..

Good results [MENTION=8262]badluck[/MENTION] ..

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[octanejunkie]

[MENTION=319302]Bad Luck[/MENTION], Juice worth the squeeze, I'll take some of that juice.



Holding 4th lil longer rpm's seem good fit in city traffic looking at power band.

May not effect it bad as you think, for the gains @50+ that some bang for buck

learning curve included.

Calc's 33's & 4.56's I need to check that out, :keyboard:

Bingo. Well said.

I don't shift into 5th until highway speeds, and then I wish I had another gear lol

One of the biggest perceived advantages of regearing for me was to get the truck closer to its powerband in more driving conditions, which 4.88s sure did. Kind wish I was running 35s most of the time tho...

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