FAQ - Differentials

Q. Do you do Differential Conversions and repairs other than the Nine Inch Ford variety?

A. Yes. we do speedway Diffs, Drag Racing Diffs, Off Road Diffs, Street Machine Diffs, Hot Rod and Street Diffs. These differentials may be:
Toyota,
AMC,
Nissan,
Borg Warner,
GM 6.5, GM 7.5, GM 7.63, GM 8.0, GM 10 Bolt, GM 12 Bolt, GM 14 Bolt,
Dana 23, Dana 25, Dana 27, Dana 30, Dana 35, Dana 41, Dana 44, Dana 45, Dana 50, Dana 53, Dana 60, Dana 61, Dana 70, Dana 80,
Ford 7.5", Ford 8.0", Ford 8.8", Ford 9.0", Ford 9.38", Ford 9.75", For 10.25", Ford 10.5",
Dodge 9 1/4", Dodge 10.5", Dodge 11.5",
Chrysler 7 1/4", Chrysler 8 1/4", Chrysler 8 3/8", Chrysler 8 3/4", Chrysler 9 1/4", Chrysler 9.63"

Q. Can you supply me with the parts to rebuild my own Diff Centre?

A. Yes we can. However you will need specialist tools and knowledge to rebuild the Diff Centre correctly.

Q. Should i use a Mini Spool or a Full Spool in my Street Driven Vehicle?

A. No. Neither one are intended for street driven vehicles, they are for Off Road use.

Q. What are Tall Gears?

A. Tall Gears are low ratios, generally 2.50 to 1 up to 3.0 to 1

Q. I want a Street Rod or Hot Rod Housing built but need to fit the brackets myself. Can i do this?

A. This is best done by collecting the housing from us. Tack the brackets with a Mig Welder then return the housing to us for full welding with our specialist jig.

Q. How do i determine the right Carrier Case to use with my Nine Inch Differential?

A. The standard Ford Carrier Case uses a 2.835 inch Bearing. Aftermarket stronger cases use a 3.062inch or a 3.25inch Bearing. note with a 3.25inch bearing Case it is only compatible with a 35 or 40 spline axle. Contact us about your specific requirements

Q. I have no provision for draining oil in my Differential. What do i do?

A. We recommend in a heavily used Vehicle changing the oil every 15,000 Miles or every 25,000 Kilometres. Bring your Differential to us and get a Drain Plug / Jacking Point installed. Then you can easily change oil. The drain plug is protected by a metal collar which acts as a jacking point.