Have a 10 bolt open. Whats the best place for new or used posi. What gears are best. Have a 327 4 speed. Also need dash parts.

 

auburn, or randys ring and pinion. how wild of 327? 3.55-4.10

 

What rear you want will depend on whot you want to do with the car.

 

Like Gorn says,how do you plan on driving it? A good street runner gear 3.55, 3.73,4.11..For hiway cruisin,and gas mileage try 3.08,OR 3.23. Don't get too high a gear or you'll smoke the clutch in no time.

 

When you decide what posi you want, drop me an e-mail and I may be able to save you a little money. For highway I would stay 3.55s or lower. This MPH/Gear calculator may help you decide. Good luck...........Toni toni@hrracecar.com
http://hrracecar.com/tech_help/cams/mph.html

 

i have a freshly redone 3:31 12 bolt posi with new lines,shoes,hardware,seals with factory eaton series 3 posi and all new multi leaf springs,bushing,shackles,shock plate from a 69 ss for 1600 cash, its basicly everything you need to swap out from your 10 bolt to a 12 bolt
it has a new heavy duty aluminum cover and i have the steel factory one as well.