changed rear diff, speedometer options

[viper92086]

So i recently swapped my 4.10 diff for a 3.73. Now my speedo is off. What are my options for a w58 trans? I would assume toyota doesnt have any other gear sets for the trans since it only came paired with a 4.10.

Could i purchase a VDO speedometer or any other aftermarker speedometer and be able to calibrate it to work with the weird new ratio?

 

[NYsBlueMA]

Im not 100 percent on this but if the 4.10 and 4.30 lsd were offered in a N/A supra and you want to keep the W58 you might need a R154 speedometer drive gear in the tranny. I'm also planning on rebuilding and swapping the diff since my 1J is drinking gas like theres a hole in the tank lol. I have a 4.30 LSD I havent checked if theres a speed difference yet, but im going to try and find out tomorow. I have the same feeling that my speedometer is readin slower actually cause 50 feels like 40

 

[supra0022]

Im not 100 percent on this but if the 4.10 and 4.30 lsd were offered in a N/A supra and you want to keep the W58 you might need a R154 speedometer drive gear in the tranny. I'm also planning on rebuilding and swapping the diff since my 1J is drinking gas like theres a hole in the tank lol. I have a 4.30 LSD I havent checked if theres a speed difference yet, but im going to try and find out tomorow. I have the same feeling that my speedometer is readin slower actually cause 50 feels like 40

I know I have the 4.30 open diff with my 89 N/A that is equiped with the W58 tranny all stock. Planning on selling your diff?

 

[viper92086]

Im not 100 percent on this but if the 4.10 and 4.30 lsd were offered in a N/A supra and you want to keep the W58 you might need a R154 speedometer drive gear in the tranny. I'm also planning on rebuilding and swapping the diff since my 1J is drinking gas like theres a hole in the tank lol. I have a 4.30 LSD I havent checked if theres a speed difference yet, but im going to try and find out tomorow. I have the same feeling that my speedometer is readin slower actually cause 50 feels like 40

But do the r154 drive gears fit in the w58 trans?

 

[IJ.]

Just grab a correction box and put it in the split cable, they'll do a roll test to calibrate it and your speedo will be accurate.

 

[RazoE]

NA's only came with 4.30's, open or limited slip..

4.10's were from TTR's, I believe, and are torsen...

but do what IJ said..

 

[viper92086]

IJ do you have a link to this correction box? I found a couple of forums speaking about one, but they seem to find them locally.

 

[NYsBlueMA]

Supra0022: sorry not selling planning on a rebuild

speaking of where can i get a nice street/strip lsd rebuild kit im having a hard time finding them I was looking at a newer clutches old spring mod but the maxgrip 7.5 rebuild sounds nice too sorry for the quick jack

 

[IJ.]

IJ do you have a link to this correction box? I found a couple of forums speaking about one, but they seem to find them locally.

The one I was using is a USA made part from the hotrod world, sorry don't have a brand name, I'll look in the shed today and see if I can find it and get the name.

 

[MA70_Powa]

keen to find out about this box too, in case I swap my diff down from a 4.30 lsd

 

[NashMan]

easy fix get a spur gear from a Toyota truck w series trans second and 3rd gen trucks came with 3.73

it's an easy swap

---------- Post added at 07:16 PM ---------- Previous post was at 07:15 PM ----------

easy fix get a spur gear from a Toyota truck w series trans second and 3rd gen trucks came with 3.73

it's an easy swap

 

[IJ.]

Doesn't correct for wheel/tire diameter changes but these do

 

[MA70_Powa]

yay for an Aussie company, boo for the price...

 

[viper92086]

easy fix get a spur gear from a Toyota truck w series trans second and 3rd gen trucks came with 3.73

it's an easy swap

---------- Post added at 07:16 PM ---------- Previous post was at 07:15 PM ----------

easy fix get a spur gear from a Toyota truck w series trans second and 3rd gen trucks came with 3.73

it's an easy swap

how easy is a easy swap? i assume i'd need to remove the trans which means not a easy swap right?

 

[Moy]

You'd need to remove the trans, remove the output shaft housing...