Cooks 2000 4x4 build with some BS

Thanks. Yeah its gonna be my weekend toy eventually. Mpg's is not really gonna a concern for me. So I understand this right? 4.88's will give me more low speed tourque/power wheen crawling or acceleration from a stop and at higher speeds on the highway my rpm's will be higher then they would be then running lower gearing like 4.56? Right now I am on 4.10's and on the highway at 75mph my rpm's are right around 2900-3000. I am.on 285/75's though currently. What would my rpm's be if you had to guess with my future set-up wants with 4.88's at that speed or 4.56's for as well? I do plan on taking some long trips someday so trying to make sure I go the right route for a trade off so I can crawl and get on the highway and not be doing 50 the whole time lol. Thanks for the help btw!

 

Yeah you'll feel more torque I guess you could say. And acceleration will feel way better. Same if not better than stock. RPMS will jump quite a bit. Maybe somewhere between 3500-4000. That's a pretty broad range but I cant remember exactly. Somewhere in there.

 

I may go 4.88s then, I'd like to have a little bit more power when crawling. I hate being low rpms when I'm crawling, constantly in the clutch.

 

FWIW I have 5.29s & 315s and still average 16 mpg. Normal cruising speed on the interstate is 65-70. If I need to push it to 80 I can without any issues. Just sitting at ~3500rpm or slightly higher. Again, not an issue in my opinion.

It's slow off the line and I can drive through town in 5th gear, but for the purpose of my rig I'm happy to take low end over top speed.

 

I love my 5.29s with my 315s.

Much much better for crawling, as before I was always either riding the clutch to go slower or bashing the hell outta my truck. And I think I prefer it on the highway with the higher RPMs. Mileage isn't a concern for me beyond being an indicator of engine health if it changes drastically.

 

What do you guys do to fix the speedometer with a gear change?

 

I have an ultra gauge. Otherwise, I believe you can swap speedo gears in the dash to accommodate for the change is speed.

 

I believe you can change the speedo gear in the transfer case. Brett @Star-Lord changed his out, I believe. Depending on your tire/gear combo, there may or may not be a gear that gets you corrected perfectly.

 

That's what it is! Thanks Jason!

 

Use the gear calculator on grimmjeeper to figure out any combo. Sounds to me though w 4.10 and 33s you should be around 2500 at 75 mph. I'm on 4.88 w 33s and at 3200 at 75 mph. That's with the w59 tranny but main big difference from your tranny is 3rd gear

 

Dakota digital is the way to go for that. Works like a charm

 

I suspect there would be a difference in comparison though because your a 4banger vs a v6?

 

I'm not sure of the exact differences but they will only be due to the different transmission. But based on the calculations I've done I the past, the rpm and mph you're describing now calculate out to a 4.56 gear ratio

 

No problem! I have the gear in my pile of parts, but it's actually for a Tundra and uses a different shaft. When Brett did his he pressed the new gear and the old gear off of their respective shafts and pressed the Tundra gear on the Tacoma shaft.

It's a pretty cool fix. I just need to see if I can get Jake to pop the gears with his press. I need to get mine done before I rack up too many more miles on the odometer that aren't real.

 

Thanks for chiming in guys!

 

Took this today, I am right at 2750rpm's at 75mph on 4.10's with 285/75's.

 

X2

 

I like a good loud tire...

But these I have are ridiculous....

 

How did the deadener go? Did it help?