My boss has a 9 in housing that he wants 50 bucks for. He said he has a set of axles that he would get rid of too and I think that he said that they are 28 spline. Now it is a small bearing housing too. What kind of cost would I be looking at to build it? What gearing should I be looking at for a turbo set up with a T5 tranny? I dont know the width of it and if it would need to be cut down to fit my 65. If I had it cut could I have the tubes changed to a big bearing? Should I just pass it up and find something better?

 

first off, even a 28 spline 9" is strong.

the final gear ratio will depend on many factors- particularly where you want to make power (what is the engine designed for- street, road course, drag racing?). plus, the size of the turbo will need to be considered as larger ones take longer to spool up and provide higher rpm power. I suppose as a very general guideline- the bigger the turbo, the higher the power band, and higher numeric gears are needed. plus, as an advantage- the higher gear ratio will help counteract any turbo lag that you will feel.

 

first off, even a 28 spline 9" is strong. shortening it may cost some money or time (depending on your skills), but will be worth it. heck, for $50 I'd buy it.

the final gear ratio will depend on many factors- particularly where you want to make power (what is the engine designed for- street, road course, drag racing?). plus, the size of the turbo will need to be considered as larger ones take longer to spool up and provide higher rpm power. I suppose as a very general guideline- the bigger the turbo, the higher the power band, and higher numeric gears are needed. plus, as an advantage- the higher gear ratio will help counteract any turbo lag that you will feel.

 

running twin T3-T4 turbos on a street aplication

 

This will help, I normally try for a 350 and it seems to cover the rpm band very well. You can plug the numbers and see what you have.
http://www.kabamus.com/garage/gears.html

 

yeah 28 spline would be ok unless you got some insane engine and slicks.Your 3rd member case and diff are the weak spots.If you change bearing size i would go torino its more of a small and large mix its what currie uses.

 

so he said that it is 54 1/4 flange to flange. came out of a late 60s cougar. My 8 in out of my 65 is 53 1/4 if I am measuring the same as he did? Is an extra inch that big of a deal. You are talking a half inch longer on either side.

 

a 65 rear is 52 1/4
There is a 2" difference between 64.5-66 and the 67-70

by all means buy it even if you don't plan on using it. It is worth more than $50.

 

Yeah buy it even if its the wrong size you could always sell it for more.It would work but your back wheels will stick out some unless you order rims with custom back spacing.

 

2" isn't much really. Moving springs inboard or running different offset wheels is easy, compared to hunting for a decent 9".

If I was near you, I'd pay $50 for it- right now.