Swaping Rings and Pinions

Joined
Aug 15, 2003
Messages
87
Hey guys,

I have a BJ40 with original 4.11 diffs, and on next week i will install some 9.00x16 tires (actually they are 92cm in diameter). Would it be better to regear it to 4.56 ?
My REAL question is if it's possible to swap the ring and pinions from a BJ73 but keeping the original BJ40 carrier. Or do i need also the BJ73 carriers? The BJ73 rear axle has an LSD in the rear and 4,56 diff ratio from factory...

Any help would be very helpfull.

Regards
 

tlcruiserman

SILVER Star
Joined
Jun 10, 2004
Messages
1,519
Location
San Diego, CA USA
 
The ring and pinion should be the same as long as the Bj40 is from 74' on (spline count on the flange was different on earlier models of 40 series). Carriers would also be interchangable as long as you do not have factory cable lockers in your Bj73.

Cheers,

Michael
 

crushers

post ho
Joined
Feb 10, 2004
Messages
22,164
Location
Tara Ontario
 
 
 
actually if you have a semi floater rear on the 40 series then the LSD will not fit, well it will fit but you will not be able to put the C clips in... thus in reality it will not fit.
the front will
the rear from the 73 will fit into the rear of the 40 FF or SF...
4.56 fromt he factory... wow, i have not come across that on any trucks i have had... i know that on the mine trucks you could get factory 4.56

cheers
 
Joined
Mar 7, 2004
Messages
53
Location
Dunedin, New Zealand
 
 
 
Small hijack here, Question for wayne

I have a lockrite in my bj71 that I am about to get rid of (replacing with a KZJ71) Will the the lockright fit a BJ4? (Flat deck) that my father has as a farm vehicle? They are both semi floaters.


Cheers
 

tlcruiserman

SILVER Star
Joined
Jun 10, 2004
Messages
1,519
Location
San Diego, CA USA
 
crushers said:
actually if you have a semi floater rear on the 40 series then the LSD will not fit, well it will fit but you will not be able to put the C clips in... thus in reality it will not fit.
the front will
the rear from the 73 will fit into the rear of the 40 FF or SF...
4.56 fromt he factory... wow, i have not come across that on any trucks i have had... i know that on the mine trucks you could get factory 4.56

cheers

Wayne is correct I missed the part about the LSD..Sorry...my bad

Michael
 
Top Bottom