Recent content by GTR1999

Go to the source- Tom's differentials. For the iron diff's he is the only one making them still in the USA. Yukon are Randy's brand name and would be either reboxed Tom's or imported.

Here is a set of Tom's gears I set up. These are 5 cut. Look at the teeth on your gear set, if you can see the Toe end is shorter then the heel end they are 5 cut. If the heights are the same they are 2 cut but I don't recall any 2 cut on original vette gear sets. This is part of the build that...

Anyone have one? Good - Bad?

Well the spider type was one thing, a steel cap on the RH side is just BS to sell someone something they don't need. I never believed in doing that or telling someone one thing and then not doing it. To each his own but some of those threads on custom diff's have really pushed the limit of...

The date code is 9/1973 so they should be 5 cut but the teeth appear equal- it just be my viewpoint. Drive is deep. Coast on the toe. If you can't get better adjustment and those are 5 cut I wouldn't use them.

There is a lot on that thread geared toward sales. In the old days we called it BS but that isn't correct anymore. Buyer beware is all I can offer. The cut gears are track proven for 50 years.

That is very interesting to see how you are loading the RG. I made a simple tool that bolts into the yoke and I can apply and vary the loading while patterning. Whose gears are you using? I didn't go back to see where and what you. 025 shim is thin for GM gears but could be right for...

Sounds like you have it under control.

I like the work area you have. Some observations if I may. I like to mill the cross shaft bolt pad down 100"-.120" to give more support to weak side on the bolt. I have seen the bolts break there and break out the side of the posi case. I like to really polish the OD and ID of the case along...

I don't know about that. I'll stick with the NOS ones I have.

IF you can feel a step with your finger nail I wouldn't use them. If not then you might be able to. Depending on your application you can use the 18's. I have tuned posi's with them for guys who didn't want to upgrade to 17's and didn't plan on aggressive driving. So if the 18's look better...

Looking back over the 2nd picture- Check the pinion OD for a groove where the seal rides. If your finger nail catches in it then you need a speedy sleeve or new yoke. There is also a small shim shown, I am assuming it is for the crush sleeve. You don't shim those, they should be crushed for...

My new email for corvettes is [email protected]

Hi I just stopped by and saw this. First off there is no 410 ratio for a vette, there is a 411 really not much of a difference. Just as GM never had a 373 for vette it was a 370. The 373 has more teeth and it stronger in my opinion. The difference between the 3 series and 4 series is the...

When the posi is correctly tuned, you can move the posi into any position on the bench- up ,down, sideways, on an angle and the cross shaft should slide out in any position. There should be no lash and no binding.