What Spider Gear to Use?

[flathead34]

I am putting together a 4:11 rear end for our '35. I have 18 tooth rear axles.
Do I use 12 tooth or 11 tooth spiders with those axles? Thanks, Mike

[ford38v8]

I never counted spider teeth, but if 11 and 12 are the choices, then the 12 would be it. You're not looking for a ratio, just a mating of the teeth.

[JSeery]

I can look it up later, one was early and one was later, but don't remember which is which!

[Brian]

12 tooth spiders with 18 tooth axles

[ford38v8]

Originally Posted by JSeery

I can look it up later, one was early and one was later, but don't remember with is which!

18 tooth '35 - '38
16 tooth '39 - '41

The above are interchangeable in sets with appropriate spiders.

[JSeery]

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Thanks ford38v8! I with though all this when I setup a quick-change, but not good at remembering these things without checking my notes.