So I'm running small tires on my 76 and that obviously changes the rpms at highway speeds, speedo is off, ect. My question is does anybody know where to find a ring and pinion with higher gears? It's easy to find lower gears like 4.88s. Please help!

 

Are you running a 4spd? If so a 5spd swap may be a good starting point to get the revs down

 

I was planning on that too. My speedo is 10mph off so I didn't figure that overdrive is quite enough.

 

Wild guess says you have 4.10s in the truck. Thats actually not bad with a 5spd if i remember right. Hunt down a W58

 

Yep I do. I've seen some w50s for sale around me but I'll keep my eyes open

 

Brief search says there are trans/speedo gears in some mtm's, if you change the gear, you change the speed shown, a good search might help. There are charts for tires size and gear teeth req.s

 

I wasn't as worried about that I was just using that as a reference to how high my rpms are on the highway compared to stock. I was hoping to alleviate all by just changing the gears in the rear end

 

The final drive ratio of a 4spd and 5spd are pretty close, so going to 5spd won't really fix the situation as 4th gear is your overdrive gear. Like you thought, you need to have higher gears in the rear diff in order to significantly change your cruising RPMs. 4.88 is "low" gearing, you want something down in the 3.XX "higher" gearing.

I too am interested in regearing my 8" diff. Mine is a 75 with a w50 5-spd and 4.10 8" diff, I don't have a tach but it screams on the highway - way more RPMs than I care for at cruising speeds. Heck, just doing 40+ on a regular road I want to get into 5th gear to quiet it down.

i'm finding that the only source for higher gears on the 8" is to pull parts off a Supra or to have someone setup the diff with brand new gears, which run around $250 just for the R&P. This was from JustDIfferentials, they have 3.58 and 3.73

 

As far as I am aware all the L series transmissions had a 1.00 for the 4th gear, so there is no overdrive on them. The W-series 5 speeds have 4th gear at 1.00 but then there is an actual overdrive in the 5th gear.

 

I agree with this, everything i read says 4th is 1:1

 

I went on that website and all I could seem to find were 8" "v6" gears. Will those work on a 4 banger axle? If so that may be a viable option for me.

 

If its an 8" i believe it should, i think the ones that maybhave been different were the 8" from the 4x4

 

v6 should work fine, everything I've read also suggests the "Tacoma 8.4" diff will also work....but you may need a v6 diff housing in order to setup the R&P. I know for sure a v6 diff will drop right into a 4cyl axle, there's a stock Toyota 4.88 diff from a v6 4runner installed in my 4x4 pickup