I bought a used but rebuilt 9 inch limited slip unit. It is a 4 pin unit, however whomever rebuilt it only put the main pin and spiders back in. I have a 4 pin open rear that I can use for parts and my question is if the open four pin spiders will work in the posi unit? Did Ford use the same spiders in posi and open rears to save production cost?
Here is an opinion question. Will a cam'ed up 289 with a stick strip a 2 pin (actuality one) posi? I think yes, hence the four pin question.
Al
9 inch spiders
Re: 9 inch spiders
I *think* they're the same... Durability probably depends on chassis setup & tires...slicks and plantin' 'em probably wouldn't help!!